String matching

var first = "abc-abcdef-abcd"
var second = "abc"
 
say first.begins_with(second)       #=> true
say first.contains(second)          #=> true
say first.ends_with(second)         #=> false
 
# Get and print the location of the match
say first.index(second)             #=> 0
 
# Find multiple occurrences of a string
var pos = -1
while (pos = first.index(second, pos+1) != -1) {
    say "Match at pos: #{pos}"
}