Regular expressions: Difference between revisions

* to substitute part of a string using a regular expression

 

'''Libraries:''' [[Satimage.osax]]

 

}

 

'''Java info:''' java version "1.5.0_06", Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05), Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)

 

// result is now "I am the modified string"

 

Test/Match

var subject = "Hello world!";

var newSubject = subject.replace(re_PatternToMatch, "Replaced");

 

 

'''Interpreter:''' [[Perl]] v5.8.8

$string =~ s/i/u/ig; # would change "I am a string" into "u am a strung"

 

 

'''Interpreter:''' [[PHP]] 5.2.0

echo "Found 'a' and replace it with 'another', resulting in this string: $string\n";

 

 

'''Interpreter:''' [[Python]] 2.5

'''Note:''' re.match() and regex.match() imply a "^" at the beginning of the regular expression. re.search() and regex.search() do not.

 

 

'i am a string' as str

str r/ a / another / print

 

Test

string="I am a string"

end)

 

 

Test

puts [regsub -- { a } {I am a string} { another }]

 

 

Toka's regular expression library allows for matching, but does not yet provide for replacing elements within strings.