replaceFirst

This is a general replacement tool that construct a new string by replacing matches of pattern re in the input. Unlike the other overload there is no format string instead captures are passed to to a user-defined functor fun that returns a new string to use as replacement.

This version replaces the first match in input, see replaceAll to replace the all of the matches.

R replaceFirst(R input, RegEx re, const(C)[] format)
R replaceFirst(R input, RegEx re)
R
replaceFirst
(
alias fun
R
RegEx
)
(
R input
,
RegEx re
)
if (
isSomeString!R &&
isRegexFor!(RegEx, R)
)

Return Value

Type: R

A new string of the same type as input with all matches replaced by return values of fun. If no matches found returns the input itself.

Examples

import std.conv : to;
string list = "#21 out of 46";
string newList = replaceFirst!(cap => to!string(to!int(cap.hit)+1))
    (list, regex(`[0-9]+`));
assert(newList == "#22 out of 46");

replaceFirst

Return Value

Examples

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