minor comments

password/generator.go

@@ -67,13 +67,16 @@ func (g *generator) Generate() string {
 	password := g.pool.Get().([]rune)
 	defer g.pool.Put(password)
 
+	// init the filler
 	idx := 0
 	fillPassword := func(runes []rune, count int) {
 		for ; idx < len(password) && count > 0; count-- {
 			password[idx] = runes[g.rng.IntN(len(runes))]
 			idx++
 		}
 	}
+
+	// fill it with minimum requirements first
 	if g.minLowerCase > 0 {
 		fillPassword(g.charsetCaseLower, g.minLowerCase)
 	}
@@ -83,6 +86,7 @@ func (g *generator) Generate() string {
 	if numSymbols := g.numSymbolsToGenerate(); numSymbols > 0 {
 		fillPassword(g.charsetSymbols, numSymbols)
 	}
+	// fill the rest with non-symbols (as symbols has a max)
 	if remainingChars := len(password) - idx; remainingChars > 0 {
 		fillPassword(g.charsetNonSymbols, remainingChars)
 	}