Mozart Standard Library: String Support

# String Support

Denys Duchier

module
  x-oz://system/String.ozf

This module provides additional convenience operation on strings. It should not be confused, with the base `String` which is always present and does not need to be imported.

## Exports

`{String.make +VS ?S}`
  turns a virtual string into a plain old regular string
`{String.length +S ?N}`
  returns the length `N` of string `S`
`{String.toInt +S ?I}`
  takes a string `S` and returns the integer `I` of which it is the textual representation
`{String.toFloat +S ?F}`
  takes a string `S` and returns the float `F` of which it is the textual representation
`{String.toInt +S ?A}`
  takes a string `S` and returns the corresponding atom `A`
`{String.capitalize +S1 ?S2}`
  takes a string `S1` and returns a string `S2` which is identical except for the first letter which has been capitalized
`{String.split +S +Sep ?L}`
  splits string `S` at all occurrences of string `Sep` and returns the resulting list `L`. `Sep` may also be `unit` in which case splits occur at all non-empty sequences of whitespace characters. It can also be `nil`, in which case splits occur between every two characters
`{String.splitAtMost +S +Sep +N ?L}`
  same as above, but at most `N` splits are performed: the remainder of the string is returned as the last element of list `L`
`{String.lstrip +S1 +Chars ?S2}`
  takes a string `S1` and returns a string `S2` where all characters at the left of `S1` which are in `Chars` have been removed. `Chars` can also be `unit`, in which case it stands for all whitespace characters
`{String.rstrip +S1 +Chars ?S2}`
  same thing but at the right-end of `S1`
`{String.strip +S1 +Chars ?S2}`
  same thing at both ends
`{String.replace +S1 +Old +New ?S2}`
  replace every occurrence of string `Old` in `S1` by `New`
`{String.replaceAtMost +S1 +Old +New +N ?S2}`
  same as above, but replace at most `N` occurrences of `Old`