Tool to find and replace by regular expression (regexp/regex) in text, message, or document to perform the corresponding replacements.
Regular Expression Replacement - dCode
Tag(s) : Data Processing
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Regular Expression Replacement
Regexp Search and Replace
Answers to Questions (FAQ)
What is a regular expression replacement? (Definition)
It is a search and replace operation, but using a search by regular expression (or rational expression or regexp) that makes it possible to extract subsets of strings respecting a precise description. Regular expression replacements allow the ability of this search to be coupled with replacement capabilities based on the results of the search.
Example: ([a-z])[a-z] describes a set of any 2 consecutive letters. Replacing with $1 makes it possible to retain only the first letter.
What is a back-reference?
Parentheses are used to number and reference their contents. Each captured parenthesis encountered will thus be associated with a back reference.
A back reference is therefore a reference to a capturing submask defined previously (in parentheses).
The reference is noted with a backslash or with a dollar followed by a number greater than 0 and often limited to 9 or 99).
Example: The regex ((A)BC) will capture ABC in \1 and A in \2.
Source code
dCode retains ownership of the "Regular Expression Replacement" source code. Any algorithm for the "Regular Expression Replacement" algorithm, applet or snippet or script (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or any "Regular Expression Replacement" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) or any database download or API access for "Regular Expression Replacement" or any other element are not public (except explicit open source licence like Creative Commons). Same with the download for offline use on PC, mobile, tablet, iPhone or Android app.
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