Creating implementation for idiom 214 : Pad string on the right

Idiom

# 214 Pad string on the right

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Append extra character c at the end of string s to make sure its length is at least m.
The length is the number of characters, not the number of bytes.

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Other implementations

s = s.PadRight(m, c);

s = s.padRight(m, c);

Demo
Doc

That's automatically the way strings are handled, as specified by the Fortran language standard.

CHARACTER(N) ::  FOO

import "strings"
import "utf8"

if n := utf8.RuneCountInString(s); n < m {
	s += strings.Repeat(c, m-n)
}

Demo
Doc

s = s.padEnd(m, c);

uses LazUtf8;

s := UTF8PadRight(s,m,c);

$s = length($s) >= $m ? $s : $s . $c x ( $m-length($s) );

Demo

$s .= $c x ($m - length $s)

Demo

s = s.ljust(m, c)

s = s.ljust(m, c)

use pad::PadStr;

let out = s.pad_to_width_with_char(m, c);

Preview