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s = s.PadLeft(m, c);s = s.padLeft(m, c);repeat(x,max(n-len(s),0)) // s-- BaseString PadChar MinOutputLength PaddedString/Output
padLeft :: String -> Char -> Int -> String
padLeft s c m = let
isBaseLarger = length s > m
padder s c m False = [ c | _ <- [1..(m-length s)]] ++ s
padder s _ _ True = s
in
padder s c m isBaseLargerThe list comprehension makes a string of chars(c) of the padding length
s = s.padStart(m, c);Introduced in ECMAScript 2017.
while (s.length() < m) s = c + s;s = s.rjust(m, c)s = f'{s:{c}>{m}}'s.rjust(m, c)if let Some(columns_short) = m.checked_sub(s.width()) {
let padding_width = c
.width()
.filter(|n| *n > 0)
.expect("padding character should be visible");
// Saturate the columns_short
let padding_needed = columns_short + padding_width - 1 / padding_width;
let mut t = String::with_capacity(s.len() + padding_needed);
t.extend((0..padding_needed).map(|_| c)
t.push_str(&s);
s = t;
}This uses the Unicode display width to determine the padding needed. This will be appropriate for most uses of monospaced text.
It assumes that m won't combine with other characters to form a grapheme.
It assumes that m won't combine with other characters to form a grapheme.