substring

substring(s, start, end)
      

Return a copy of the string s from start (inclusive) to end (exclusive).

Start and end must be exact nonnegative integers; start must be less than the length of s, while end may be less than or equal to the length of s. If end <= start is true, a string of length zero is returned.

Examples:

let s = "hello, world"          
substring(s, 7, 9)
// wo
substring(s, 7, string_length(s))
// world

s[7:9]
// wo
s[7:]
// world
s[:5]
// hello
      

Also see:

Core Module Index | Contents