Replace first: Difference between revisions
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imported>Bale Created page with '{{ #vardefine:name|replace_first}}{{ #vardefine:return_type|string}}{{ FunctionPage| name={{#var:name}}| function_category=String Handling Routines| function1={{Function| name=…' |
imported>Heeheehee m Minor fix to code sample. |
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FunctionPage| | FunctionPage| | ||
name={{#var:name}}| | name={{#var:name}}| | ||
function1={{Function| | function1={{Function| | ||
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string input = "zzzdogzzzdogzzz"; | string input = "zzzdogzzzdogzzz"; | ||
matcher test_match = create_matcher("dog", input); | matcher test_match = create_matcher("dog", input); | ||
string result = | string result = replace_first(test_match, "cat"); | ||
print(result); | print(result); | ||
</syntaxhighlight>| | </syntaxhighlight>| | ||
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{{SeeAlso|replace_all}}| | {{SeeAlso|replace_all}}| | ||
}} | }} | ||
[[Category:String Handling Routines]] | |||
Latest revision as of 20:34, 5 August 2010
Function Syntax
string replace_first(matcher pattern ,string replacement )
- pattern is the regular expression to use
- replacement is used to replace a match of the pattern
This function first resets the matcher pattern. It then scans the input sequence looking a match of the pattern. Characters that are not part of any match are appended directly to the result string with the first match replaced by the replacement string.
Simple Example
For example:
string input = "zzzdogzzzdogzzz";
matcher test_match = create_matcher("dog", input);
string result = replace_first(test_match, "cat");
print(result);Will result in the following being printed:
zzzcatzzzdogzzz