Szathmáry László honlapja @ DEIK | Nim2 / strip() et al.

lstrip(), rstrip()

Nim doesn't have these functions, only strip(). However, they can be implemented easily:

import std/strutils # strip, split, join

func lstrip*(s: string, chars: set[char] = Whitespace): string =
s.strip(leading=true, trailing=false, chars=chars)

func lstrip*(s: string, chars: string): string =
var bs: set[char] = {}
for c in chars:
bs = bs + {c}
s.strip(leading=true, trailing=false, chars=bs)

func rstrip*(s: string, chars: set[char] = Whitespace): string =
s.strip(leading=false, trailing=true, chars=chars)

func rstrip*(s: string, chars: string): string =
var bs: set[char] = {}
for c in chars:
bs = bs + {c}
s.strip(leading=false, trailing=true, chars=bs)

Examples

strip(), lstrip(), rstrip()
print("'" + " aa bb ".strip() + "'") # 'aa bb' print("'" + " aa bb ".lstrip() + "'") # 'aa bb ' print("'" + " aa bb ".rstrip() + "'") # ' aa bb' print("'" + "line\n".rstrip("\n") + "'") # 'line'	import std/strutils # strip, split, join # you need lstrip() and rstrip() from above ^^^ echo("'" & " aa bb ".strip() & "'") # 'aa bb' echo("'" & " aa bb ".lstrip() & "'") # 'aa bb ' echo("'" & " aa bb ".rstrip() & "'") # ' aa bb' echo("'" & "line\n".rstrip("\n") & "'") # 'line'