TestSuite.txt

======================================================================
==== Testing print.  Important since all the other tests rely on it!
==== And we'll test comments while we're at it.
print "Hello world!"
print "You can ""quote"" me on that."
print(42) // Works both with and without parentheses
----------------------------------------------------------------------
Hello world!
You can "quote" me on that.
42
======================================================================
==== Testing printing doubles
print 1.2
print 1e-6
print 1e-7
print -1e-6
print -1e-7
print 1e20
print -1e20
print 1.234567890123
n1 = 2147483648
n2 = 42
n3 = n1 + n2
n4 = n3 - 10000
print n4
----------------------------------------------------------------------
1.2
0.000001
1.000000E-007
-0.000001
-1.000000E-007
100000000000000000000
-100000000000000000000
1.234568
2147473690
======================================================================
==== Basic math and operator precedence.
print 2 * 3 + 4
print 2 + 3 * .5
print -2 * -3 - 4
print -2 - 3 * -4
print -2^3
----------------------------------------------------------------------
10
3.5
2
10
-8
======================================================================
==== Logical operators (basics).
print 1 and 1 and 1
print 1 and 0 and 1
print 0 and 1 and 1
print 0 and 0.5
print(0.5 and 1)		// combines intermediate values by rules of probability!
print 0.6 and 0.5
print 1 or 1 or 1
print 1 or 0 or 1
print 0 or 1 or 1
print 0 or 0.5
print 0.6 or 0.3
print 0.5 or 1
print 1 and null
print 1 or null
----------------------------------------------------------------------
1
0
0
0
0.5
0.3
1
1
1
0.5
0.72
1
0
1
======================================================================
==== Logical operators, short-circuit evaluation.
reset = function(); globals.r = []; end function
ftrue = function(x); globals.r = r + [x]; return 1; end function
ffalse = function(x); globals.r = r + [x]; return 0; end function
fmaybe = function(x); globals.r = r + [x]; return 0.5; end function
reset; print (ftrue(1) and ftrue(2) and ftrue(3)) + "; " + r
reset; print (ftrue(1) and ftrue(2) and ffalse(3)) + "; " + r
reset; print (ftrue(1) and ffalse(2) and ftrue(3)) + "; " + r
reset; print (ffalse(1) and ftrue(2) and ftrue(3)) + "; " + r
reset; print((fmaybe(1) and ftrue(2) and ftrue(3)) + "; " + r);
reset; print((ffalse(1) or ffalse(2) or ffalse(3)) + "; " + r);
reset; print((ffalse(1) or ffalse(2) or ftrue(3)) + "; " + r);
reset; print((ffalse(1) or ftrue(2) or ffalse(3)) + "; " + r);
reset; print((ftrue(1) or ffalse(2) or ffalse(3)) + "; " + r);
reset; print((fmaybe(1) or ffalse(2) or ffalse(3)) + "; " + r);
----------------------------------------------------------------------
1; [1, 2, 3]
0; [1, 2, 3]
0; [1, 2]
0; [1]
0.5; [1, 2, 3]
0; [1, 2, 3]
1; [1, 2, 3]
1; [1, 2]
1; [1]
0.5; [1, 2, 3]
======================================================================
==== Check the new 'true' and 'false' keywords introduced in v1.1.
print true
print false
----------------------------------------------------------------------
1
0
======================================================================
==== Testing conventional 'if', and what values count as true.
if 1 then
	print 10
end if
if -1 then; print(11); end if
if 0 then; print(20); end if
if 0.001 then; print(30); end if
if -0.001 then; print(31); end if
if [1] then; print(40); end if
if [] then; print(50); end if
if null then; print(60); else; print("OK!"); end if
----------------------------------------------------------------------
10
11
30
31
40
OK!
======================================================================
==== Testing the single-line 'if' statement introduced in v1.1.
if true then print "Yep"
if 1 then print "yay" else print"nay"
if false then print "yo" else print "no"
if true then x=1 else x=2
print x
for i in range(1,10)
	if i == 3 then continue
	if i == 6 then break
	print i
end for
----------------------------------------------------------------------
Yep
yay
no
1
1
2
4
5
======================================================================
===== More complex 'if' structures.
if 1 then
	print 10
else if 1 then
	print 15
else
	print 20
end if
print 30
if 0 then
	print 40
else if 1 then
	print 45
else
	print 50
end if
print 60
if 0 then
	print 70
else if 0 then
	print 80
else if 1 then
	print 90
else
	print 100
end if
if 0 then
	print 110
else if 0 then
	print 120
else if 0 then
	print 130
else
	print 140
end if
print 150
----------------------------------------------------------------------
10
30
45
60
90
140
150
======================================================================
===== Nested 'if' structures.
if 1 then
	if 1 then; print(101); else; print(102); end if
else
	if 1 then; print(201); else; print(202); end if
end if
print 300
if 0 then
	if 1 then; print(401); else; print(402); end if
else
	if 0 then; print(501); else; print(502); end if
end if
print 999
----------------------------------------------------------------------
101
300
502
999
======================================================================
==== Variables.
x = 6*7
print x
y = x == 42
print y
----------------------------------------------------------------------
42
1
======================================================================
==== List operations.
list1 = [0, 10, 20, 30, 40]
list2 = [100, -200, 300]
print list1[1]
print list1[:3]
print list1[3:]
print list1[-2]
print list1[1:-1]
print list1 + list2
print [10,20,30,40,50][2:4]
print list2 * 2.5
print list1 * 0.4
print list1 * -5
list1[2] = 22
print list1
print "Equality 1: " + (list1 == list2)
listA = list2
print "Equality A: " + (listA == list2)
listB = [100, -200] + [300]
print "Equality B: " + (listB == list2)
----------------------------------------------------------------------
10
[0, 10, 20]
[30, 40]
30
[10, 20, 30]
[0, 10, 20, 30, 40, 100, -200, 300]
[30, 40]
[100, -200, 300, 100, -200, 300, 100]
[0, 10]
[]
[0, 10, 22, 30, 40]
Equality 1: 0
Equality A: 1
Equality B: 1
======================================================================
==== String operations.
str1 = "apple"
str2 = "banana"
print str1[0]
print str1[-2]
print str1 + str2
print str1 * 3
print str1 * 0.6
print str2 * 0.5 + str1
print str2[1:-1]
print str1[2:4] + str2[-3:5]
print str1 * 0 == ""
print "banana.txt" - ".txt"
print "banana" - "na" * 2
----------------------------------------------------------------------
a
l
applebanana
appleappleapple
app
banapple
anan
plan
1
banana
ba
======================================================================
==== Basic map functionality.
sortedStr = function(d)
	result = "{"
	for k in d.indexes.sort
		result = result + k + ": " + d[k] + ", "
	end for
	return result[:-2] + "}"
end function
a = {1:1, 2:4}
print sortedStr(a)
print a[2]
print sortedStr(a + {3:9})
print sortedStr(a + {1:-1})
a[2] = 44
print a[2]
b = a
c = {1:1} + {2:44}
print "Equality B: " + (b == a)
print "Equality C: " + (c == a)
c[1] = "one"
print "Equality C2: " + (c == a)
d = {"empty":null}
print d
----------------------------------------------------------------------
{1: 1, 2: 4}
4
{1: 1, 2: 4, 3: 9}
{1: -1, 2: 4}
44
Equality B: 1
Equality C: 1
Equality C2: 0
{"empty": null}
======================================================================
==== Test map equality in the trickier case of recursive references.
a = {}
b = {}
c = {}
a.b = b
b.a = a
c = a
print "a == b: " + (a == b)
print "a == c: " + (a == c)
print "b == c: " + (b == c)
----------------------------------------------------------------------
a == b: 0
a == c: 1
b == c: 0
======================================================================
==== Simple intrinsic functions.
==== (Including a range check on rnd, which is about the best we can do.)
print str(4) + str(2)
print slice([0,10,20,30], 1, -1)
print rnd >= 0
print rnd < 1
print str(42.0)
print val("40.2")
t1 = time; wait(0.1); e = time - t1
if e >= 0.1 then print "wait OK" else print "wait broken"
print len("hello")
print len([1,2,3,4])
print len({1:"one", 2:"two"})
----------------------------------------------------------------------
42
[10, 20]
1
1
42
40.2
wait OK
5
4
2
======================================================================
==== hasIndex and indexOf on strings, lists, and maps.
s = "abcde"
print s.hasIndex(4)		// 1 (true)
print(s.hasIndex(5))	// 0
print s.hasIndex(-5)	// 1 (5 elements from the end)
print(s.hasIndex(-6))	// 0
print(s.indexOf("cd"))	// 2
print(s.indexOf("xy"))	// null
l = [2,4,6,8]
print l.hasIndex(3)		// 1 (true)
print(l.hasIndex(4))	// 0
print(l.hasIndex(-4))	// 1
print(l.indexOf(6))		// 2
print(l.indexOf(5))		// null
d = {1:"one", 2:"two", "foo":42}
print d.hasIndex(1)		// 1 (true)
print(d.hasIndex("x"))	// 0
print(d.indexOf("two"))	// 2
print(d.indexOf(42))	// foo
print(d.indexOf(999))	// null
// and now with the optional "after" parameter...
s = "hello world"
print(s.indexOf("h",-1))	// 0
print(s.indexOf("o"))		// 4
print(s.indexOf("o",4))		// 7
print(s.indexOf("o",7))		// null
print(s.indexOf("l",-3))	// 9
l = [2,4,6,4,2]
print(l.indexOf(2,-1))		// 0
print(l.indexOf(2,0))		// 4
print(l.indexOf(2,-2))		// 4
print(l.indexOf(2,4))		// null
d["bar"] = 42
a = d.indexOf(42)			// "foo" (or "bar"; order undefined)
b = d.indexOf(42, a)		// "bar" (or "foo")
print(d.indexOf(42, b))		// null
l = [a,b]
l.sort
print(l)					// ["bar", "foo"]
----------------------------------------------------------------------
1
0
1
0
2
null
1
0
1
2
null
1
0
2
foo
null
0
4
7
null
9
0
4
4
null
null
["bar", "foo"]
======================================================================
==== truth testing (including with and, or, and not)
emptyList = []
fullList = [1,2,3]
emptyMap = {}
fullMap = {1:"one", 2:"two"}
emptyString = ""
fullString = "foo"
if emptyList then print "A"
if not emptyList then print "B"
if fullList then print "C"
if not fullList then print "D"
if fullString then print "E"
if not fullString then print "F"
if emptyList and fullList then print "G"
if emptyList or fullList then print "H"
if emptyMap and fullMap then print "I"
if emptyMap or fullMap then print "J"
if emptyString and fullString then print "K"
if emptyString or fullString then print "L"
----------------------------------------------------------------------
B
C
E
H
J
L
======================================================================
==== hashing and dictionary key uniqueness
==== (Note that hash(a) should == hash(b) wherever a == b)
a = [1, 2, 3]
b = [1, 2] + [3]
print hash(a) == hash(b)
d = {}
d[a] = 1
d[b] = 2
print d.len + ": " + d[a] + ", " + d[b]
d1 = {1:"one", 2:"two"}
d2 = {1:"one"}
d2[2] = "two"
print hash(d1) == hash(d2)
----------------------------------------------------------------------
1
1: 2, 2
1
======================================================================
==== Equality checking in the edge case of a list or dictionary
==== that contains itself.  In this case, if two such lists are
==== equal but not the same object, we stop recursing (after delving
==== 16 levels deep) and return 0.5 for "maybe".
====a = [1, 2, 3]
====a[1] = a
====b = [1, 2, 3]
====b[1] = b
====print hash(a) == hash(b)
====print(a == a)	// prints 1, as they're the same object
====print(a == b)	// prints 0.5, because it's too hard to tell
====b[2] = 42		// but they're now truly different
====print(a == b)	// so this prints 0
====d1 = {1:"foo"}
====d1["recurse"] = d1
====d2 = {1:"foo"}
====d2["recurse"] = d2
====print(d1 == d1)	// prints 1, as they're the same object
====print(d1 == d2)	// prints 0.5, because it's too hard to tell
====d2[1] = "bar"	// but they're now truly different
====print(d2 == d2)	// so this prints 0
====----------------------------------------------------------------------
====1
====0.5
====0
====1
====0.5
====0
======================================================================
==== Trigonometry.
print "Pi: " + round(pi, 2)
print "acos(0.5): " + round(acos(0.5), 3)
print "asin(0.5): " + round(asin(0.5), 3)
print "atan(0.5): " + round(atan(0.5), 3)
print "cos(-pi/4): " + round(cos(-pi/4), 3)
print "sin(-pi/4): " + round(sin(-pi/4), 3)
print "tan(1): " + round(tan(1), 3)
----------------------------------------------------------------------
Pi: 3.14
acos(0.5): 1.047
asin(0.5): 0.524
atan(0.5): 0.464
cos(-pi/4): 0.707
sin(-pi/4): -0.707
tan(1): 1.557
======================================================================
==== User-defined functions (including params, with and without default values).
ultimateAnswer = function()
	return 2 + 4*10
end function
print ultimateAnswer
f = function(x, y)
	return x*2 + y
end function
print f(5,2)
g = function(x=10, y=20)
	return x*2 + y
end function
h = function(x)
	if x == 42 then; return; end if
	print "Hooray!"
end function
print g
print g()
print g(5)
print g(5, 6)
h(42)
----------------------------------------------------------------------
42
12
40
40
30
16
======================================================================
==== Variable scoping tests.
f = function(x)
	print x
	print y
	x = 10
	y = 20
end function
x = 1
y = 2
f(5)
print x
print y
----------------------------------------------------------------------
5
2
1
2
======================================================================
==== Explicit access to globals and locals.
count = 0
foo = "bar"
f = function(x)
	globals.count = globals.count + 1
	locals.foo = "baz"
	print globals.count + ", " + foo
end function
f
f
print foo
----------------------------------------------------------------------
1, baz
2, baz
bar
======================================================================
==== Test precedence between [] and . (a bug in MiniScript version 1).
d = {}
d.items = {}
d.items[42] = "foo!"
print d.items[42]
----------------------------------------------------------------------
foo!
======================================================================
==== Function invocation via dot vs. lookup by name
d = {}
d.func = function(x=0)
	print "Running func with " + x
end function
d.func(1)
f = d["func"]
f(2)
g = @d.func
g(3)
----------------------------------------------------------------------
Running func with 1
Running func with 2
Running func with 3
======================================================================
==== Testing spam generation.  (Not that we condone spam.)
==== (aka string replication)
spam = function(n)
	if n == 1 then
		return "Spam."
	else
		return "Spam, " + "spam, " * (n-2) + "spam."
	end if
end function
print spam(1)
print spam(2)
print spam(3)
print spam(7)
print spam(0)
print spam(-4)
----------------------------------------------------------------------
Spam.
Spam, spam.
Spam, spam, spam.
Spam, spam, spam, spam, spam, spam, spam.
Spam, spam.
Spam, spam.
======================================================================
==== Simple recursion test.
recursiveFactorial = function(n)
	if n == 1 then; return 1; end if
	return n * recursiveFactorial(n-1)
end function
print recursiveFactorial(1)
print recursiveFactorial(5)
----------------------------------------------------------------------
1
120
======================================================================
==== Function invocation & referencing.
triple = function(n)
	return n*3
end function
print(triple)	// NULL, since we didn't supply an argument
print triple(5)
print @triple
f = @triple
print f(6)
----------------------------------------------------------------------
null
15
FUNCTION(n)
18
======================================================================
==== While loop, with break and continue.
i = 0
while i < 20
	i = i + 1
	if i > 10 then; break; end if
	if i % 3 == 0 then; continue; end if
	print i
end while
----------------------------------------------------------------------
1
2
4
5
7
8
10
======================================================================
==== Test the range() intrinsic.
print range(1,10)
print range(10,1)
print range(0, 10, 3)
print range(10, 0, -3)
----------------------------------------------------------------------
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
[0, 3, 6, 9]
[10, 7, 4, 1]
======================================================================
==== Test the remove() intrinsic.
s = "Hello Bob!"
print s.remove("ell")
print remove(s, " Bob")
l = [1,2,3,4,5]
l.remove(-2)  // (second from the end)
print l
d = {1:"one", "foo":"bar"}
print d.remove("no such key")
print d.remove(1)
print d
----------------------------------------------------------------------
Ho Bob!
Hello!
[1, 2, 3, 5]
0
1
{"foo": "bar"}
======================================================================
==== Test the replace() intrinsic.
s = "Hello Bob!"
print s.replace("o", "oo")
print replace(s, "Bob", "Frank")
s = "Mello Yellow"
print replace(s, "ell", "ipp")
print s.replace("ell", "ipp", 1)
l = [1, 2, 5, 2, "foo", 2, "bar"]
l.replace(2, 22)
print l
print l.replace("foo", "foible")
print l.replace(22, 3, 2)
d = {1:"one", 2:"two", "foo":"bar"}
d.replace("two", "ni")
print d[1] + ", " + d[2] + ", " + d.foo
d.replace("bar", "ni")
print d[1] + ", " + d[2] + ", " + d.foo
d.replace("ni", "two")
print d[1] + ", " + d[2] + ", " + d.foo
d.replace("two", "deux", 1)  // order not defined here, so:
s = d[1] + ", " + d[2] + ", " + d.foo
if s == "one, deux, two" or s == "one, two, deux" then
	print "OK"
else
	print "map replace failed"
end if
----------------------------------------------------------------------
Helloo Boob!
Hello Frank!
Mippo Yippow
Mippo Yellow
[1, 22, 5, 22, "foo", 22, "bar"]
[1, 22, 5, 22, "foible", 22, "bar"]
[1, 3, 5, 3, "foible", 22, "bar"]
one, ni, bar
one, ni, ni
one, two, two
OK
======================================================================
==== For loop, with break and continue.
for i in range(0, 100, 7)
	if i > 50 then; break; end if
	if i % 3 == 0 then; continue; end if
	print i
end for
----------------------------------------------------------------------
7
14
28
35
49
======================================================================
==== For loop iteration over a map (getting key/value pairs).
==== (Note that order is not really defined, so we have to gather
==== up the results and sort them to get a well-defined result.)
d = {"one":1, "two":2, "three":3}
results = []
for i in d
	results = results + [i.key + " maps to " + i.value]
end for
results.sort
print results.len
print results[0]
print results[1]
print results[2]
----------------------------------------------------------------------
3
one maps to 1
three maps to 3
two maps to 2
======================================================================
==== Function references.
f = rnd			// here, f is just a single random number
a1 = f
a2 = f
print a1==a2	// should be true (1)
f = @rnd		// but now, f is a reference to the rnd function
a1 = f
a2 = f
print a1==a2 	// should be false (0)
print @f==@rnd	// should be true (1)
----------------------------------------------------------------------
1
0
1
======================================================================
==== Advanced function references.
module = {}
module.func1 = function(x)
	return x * 42
end function
f = @module.func1
print @f == @module.func1
print @module.func1 == @f
docs = {}
docs[@module.func1] = "Multiplies by 42."
print docs[@module.func1]
print docs[@f]
----------------------------------------------------------------------
1
1
Multiplies by 42.
Multiplies by 42.
======================================================================
==== Compile-time error reporting test.
x = 1
x = 5$&@*!
x = 3
----------------------------------------------------------------------
Compiler Error: got Unknown($) where EOL is required [line 2]
======================================================================
==== Run-time error reporting test.
x = 1
x = noSuchThingy
x = 3
----------------------------------------------------------------------
Runtime Error: Undefined Identifier: 'noSuchThingy' is unknown in this context [line 2]
======================================================================
==== Error reporting of unexpected end-of-file.
for i in range(0,10)
	print i
----------------------------------------------------------------------
Compiler Error: 'for' without matching 'end for' [line 3]
======================================================================
==== Testing that objects are distinct, even when new'd in a function.
==== (This was a bug in an early version of MiniScript.)
Vec = {"x":0, "y":0}
Vec.New = function()
	return new Vec
end function
v1 = new Vec
v2 = Vec.New
v3 = Vec.New
v1.x = 1
v2.x = 2
v3.x = 3
print v1.x
print v2.x
print v3.x
----------------------------------------------------------------------
1
2
3
======================================================================
==== Similar test, for lists.
f = function()
	return [1,2,3]
end function
a = f
b = f
a[1] = 22
print a
print b
----------------------------------------------------------------------
[1, 22, 3]
[1, 2, 3]
======================================================================
==== Reassigning elements of a list in a loop.
lst = [1,2,3,4,5]
for i in range(0, lst.len-1)
	lst[i] = lst[i] * 2
end for
print lst
----------------------------------------------------------------------
[2, 4, 6, 8, 10]
======================================================================
==== Test handling of nulls in lists.
n = null
l = [1,n,3]
print l
l = [4,null,6]
print l
----------------------------------------------------------------------
[1, null, 3]
[4, null, 6]
======================================================================
==== Nested lists (can be used like a jagged 2D array).
m = [[0,1,2], [3,4,5]]
for i in range(0,1)
	for j in range(0,2)
		print i + ", " + j + ": " + m[i][j]
	end for
end for
----------------------------------------------------------------------
0, 0: 0
0, 1: 1
0, 2: 2
1, 0: 3
1, 1: 4
1, 2: 5
======================================================================
==== Testing chaining of calls.
Vec = {"x":0, "y":0}
Vec.New = function(x=0, y=0)
	result = new Vec
	result.x = x
	result.y = y
	return result
end function
Vec.Print = function()
	print "x:" + self.x + " y:" + self.y
end function
Vec.New.Print
Vec.New(40,2).Print
s = "Hello world!"
print(s.upper.indexOf("R"))			// 8
print(s.upper().indexOf("R"))		// 8
print(s.remove("l").indexOf("r"))	// 7
d = {}
d.foo = ["a", "b", "c"]
print(d.foo.len)				// 3
print(d.foo.indexOf("b"))		// 1
f = function()
	return d
end function
print(f.foo.len)				// 3
print(f.foo.indexOf("b"))		// 1
----------------------------------------------------------------------
x:0 y:0
x:40 y:2
8
8
7
3
1
3
1
======================================================================
==== Testing that a function without an explicit return statement returns null.
f = function(x)
	print x
end function
y = f(42)
if y == null then print "Good" else print "Bad"
----------------------------------------------------------------------
42
Good
======================================================================
==== List push, pop (like a stack), and pull (like a queue).
lst = []
lst.push(1)
lst.push(2)
lst.push(3)
print lst
print lst.pop + " -> " + lst
print lst.pull + " -> " + lst
print lst.pull + " -> " + lst
----------------------------------------------------------------------
[1, 2, 3]
3 -> [1, 2]
1 -> [2]
2 -> []
======================================================================
==== Map push, pop (like a set)
==== Note that this is a bit hard to test because of arbitrary order issues.
sortedStr = function(d)
	result = "{"
	for k in d.indexes.sort
		result = result + k + ": " + d[k] + ", "
	end for
	return result[:-2] + "}"
end function
d = {}
d.push(1)
d.push(2)
d.push(3)
print sortedStr(d)
results = [d.pop, d.pop, d.pop]
results.sort
print results
print d
----------------------------------------------------------------------
{1: 1, 2: 1, 3: 1}
[1, 2, 3]
{}
======================================================================
==== indexes and values intrinsics
d = {1:"one", 2:"two", 3:"three"}
print d.indexes.sort
print d.values.sort
s = "Howdy"
print s.indexes
print s.values
----------------------------------------------------------------------
[1, 2, 3]
["one", "three", "two"]
[0, 1, 2, 3, 4]
["H", "o", "w", "d", "y"]
======================================================================
==== list sorting (both direct, and by a given key)
lst = [42, 6, -3, 10, -1, 13]
lst.sort
print lst
lst = []
lst.push({"name":"three", "val":3})
lst.push({"name":"one", "val":1})
lst.push({"name":"four", "val":4})
lst.push({"name":"two", "val":2})
lst.sort("name")
print lst
lst.sort("val")
print lst
----------------------------------------------------------------------
[-3, -1, 6, 10, 13, 42]
[{"name": "four", "val": 4}, {"name": "one", "val": 1}, {"name": "three", "val": 3}, {"name": "two", "val": 2}]
[{"name": "one", "val": 1}, {"name": "two", "val": 2}, {"name": "three", "val": 3}, {"name": "four", "val": 4}]
======================================================================
==== Test the super pseudo-keyword
A = {}
A.name = "Ay"
A.func = function()
	return self.name + "1"
end function
B = new A
B.name = "Bee"
C = new B
C.name = "Sea"
C.func = function()
	return super.func + "." + self.name + "3"
end function
c = new C
print c.func
----------------------------------------------------------------------
Sea1.Sea3
======================================================================
==== Test the join intrinsic
print range(1,5).join
print ["a","b","c"].join("<>")
print [].join("<>")
----------------------------------------------------------------------
1 2 3 4 5
a<>b<>c

======================================================================
==== Test log.
print log(100)
print log(2048, 2)
print log(50, 5)
----------------------------------------------------------------------
2
11
2.430677
======================================================================
==== Test isa.
print 42 isa number
print 42 isa string
print "foo" isa string
print "foo" isa number
print {} isa map
d = {}
e = new d
print e isa d
print d isa d
----------------------------------------------------------------------
1
0
1
0
1
1
0
======================================================================
==== Test adding new extension methods to built-in types.
string.cap = function()
	return self[0].upper + self[1:]
end function
print "foo!".cap
number.squared = function()
	return self * self
end function

// Known issue: you can't use dot syntax with numeric literals.
n = 9
print n.squared

list.zap = function(x)
	for i in range(self.len-1, 0)
		if self[i] == x then self.remove i
	end for
end function
l = ["a","b","c","b","a"]
l.zap("b")
print l
----------------------------------------------------------------------
Foo!
81
["a", "c", "a"]
======================================================================
==== Test the split intrinsic
print split("Eat, pray, love", ", ")
print split("...foo...bar...", "...")
print "Eat, pray, love".split(", ", 2)
print "foo=bar=baz=bamf".split("=", 3)
----------------------------------------------------------------------
["Eat", "pray", "love"]
["", "foo", "bar", ""]
["Eat", "pray, love"]
["foo", "bar", "baz=bamf"]
======================================================================
==== Example: Summing an array (http://c2.com/cgi/wiki?ArraySum)
==== (trivial thanks to the built-in sum function)
print sum([10,15,20])
list = [100,15,20]
print list.sum
----------------------------------------------------------------------
45
135
======================================================================
==== Example: Counter (http://c2.com/cgi/wiki?CounterInManyProgrammingLanguages)
==== (Overflows when a signed int is exceeded.)
======================================================================
Counter = {"value":0}
Counter.next = function()
	self.value = self.value + 1
	return self.value
end function
c = new Counter
print c.next
print c.next
print c.next
----------------------------------------------------------------------
1
2
3
======================================================================
==== Example: Dot Product (http://c2.com/cgi/wiki?DotProductInManyProgrammingLanguages)
dotProduct = function(a, b)
	sum = 0
	for i in range(0, a.len - 1)
		sum = sum + a[i] * b[i]
	end for
	return sum
end function
print dotProduct([1, 2, 3], [10, 100, 1000])
----------------------------------------------------------------------
3210
======================================================================
==== Example: FizzBuzz (http://rosettacode.org/wiki/FizzBuzz)
fizzBuzz = function(n)
	for i in range(1, n)
	    s = "Fizz" * (i%3==0) + "Buzz" * (i%5==0)
		if s == "" then s = str(i)
		print s
	end for
end function
fizzBuzz(15)
----------------------------------------------------------------------
1
2
Fizz
4
Buzz
Fizz
7
8
Fizz
Buzz
11
Fizz
13
14
FizzBuzz
======================================================================
==== Example: Map (http://rosettacode.org/wiki/Apply_a_callback_to_an_array)
map = function(f, seq)
	result = []
	for i in seq
		result = result + [f(i)]
	end for
	return result
end function
square = function(x)
	return x*x
end function
list = [2,3,5]
print map(@square, list)
----------------------------------------------------------------------
[4, 9, 25]
======================================================================
==== Example: Filter (http://rosettacode.org/wiki/Filter)
filter = function(f, seq)
	result = []
	for i in seq
		if f(i) then result = result + [i]
	end for
	return result
end function
isEven = function(x)
	return x % 2 == 0
end function
list = [2,3,5,6,8,9]
print filter(@isEven, list)
----------------------------------------------------------------------
[2, 6, 8]
======================================================================
==== Sum and Product of an array
==== (http://rosettacode.org/wiki/Sum_and_product_of_an_array)
==== We have a built-in function for the sum, but not the product.
product = function(seq)
	prod = 1
	for i in seq
		prod = prod * i
	end for
	return prod
end function
list = [2, 4, 6]
print list.sum
print(product(list))	// pity we can't add this to the built-in list type!
----------------------------------------------------------------------
12
48
======================================================================
==== Greatest Common Denominator (http://rosettacode.org/wiki/Greatest_common_divisor)
gcd = function(a, b)
	if a == 0 then return b
	while b != 0
		newA = b
		b = a % b
		a = newA
	end while
	return abs(a)
end function
print gcd(-21, 35)
----------------------------------------------------------------------
7
======================================================================
==== Max element of a list (http://rosettacode.org/wiki/Greatest_element_of_a_list)
max = function(seq)
	if seq.len == 0 then return null
	max = seq[0]
	for item in seq
		if item > max then max = item
	end for
	return max
end function
print max([5, -2, 12, 7, 0])
----------------------------------------------------------------------
12
======================================================================
==== Split a string into a list by some delimiter
==== (without using the .split function added in 1.4!)
oldSplit = function(s, delim)
	result = []
	wordStart = 0
	sLen = s.len
	delimLen = delim.len
	i = 0
	while i < sLen
		if s[i:i+delimLen] == delim then
			result = result + [ s[wordStart:i] ]
			wordStart = i + delimLen
			i = wordStart
		else
			i = i + 1
		end if
	end while
	result = result + [ s[wordStart:i] ]
	return result
end function
print oldSplit("Eat, pray, love", ", ")
print oldSplit("...foo...bar...", "...")
----------------------------------------------------------------------
["Eat", "pray", "love"]
["", "foo", "bar", ""]
======================================================================
==== Titlecase function
titlecase = function(s)
	result = ""
	for i in s.indexes
		if i == 0 or s[i-1] == " " then
			result = result + s[i].upper
		else
			result = result + s[i].lower
		end if
	end for
	return result
end function
print titlecase("AND NOW for something completely different")
----------------------------------------------------------------------
And Now For Something Completely Different