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how to have backwards reference on PHP's regex?


how to have backwards reference on PHP's regex?

By : Ratib Noori
Date : November 22 2020, 02:59 PM
wish of those help PHP is almost fully PCRE-compatible. As such, it does support backreferences.
code :
$r = "/KEY=(['\"])VAL\1/";


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searching backwards with regex

searching backwards with regex


By : Kyle Sanders
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have the following different texts , I think you want:
code :
(\w*)\s*,?$
Going backwards with RegEx

Going backwards with RegEx


By : bug
Date : March 29 2020, 07:55 AM
Does that help I need to parse iOS's *.strings files to get key/value pairs with comments. For example: , You can do all that in a single regex:
code :
Match match = null;
match = Regex.Match(subject, 
    @"(?<=           # Look behind to make sure that there is a comment before:
    (?:              # Try to match...
     /\*             # /*
     (?<comment>     # Capture the comment in the group 'comment'
      (?:            # Match...
       (?!\*/)       # (as long as it's not '*/')
       .             # any character.
      )*             # Repeat as needed.
     )               # End of group 'comment'
     \*/             # Match */
    )?               # Make the whlo comment optional
     \s*             # Match whitespace, including newlines
    )                # End of lookbehind assertion
    ^                # Match the start of the line
    ""               # Match a quote
    (?<name>[^""]*)  # Capture any number of non-quote characters into group 'name'
    ""\s*=\s*""      # Match quote - equals - quote, with optional whitespace
    (?<value>[^""]*) # Capture any number of non-quote characters into group 'text'
    "";              # Match the closing quote and semicolon", 
    RegexOptions.Singleline | RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace);
row["name"] = match.Groups["name"];
row["text"] = match.Groups["text"];
row["comment"] = match.Groups["comment"];
RegEx looking both backwards and forward

RegEx looking both backwards and forward


By : Drooliver
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Python re module doesn't support variable length lookbehinds. Your regex should throw a syntax error. A workaround would be using tempered dots:
code :
^(?:(?!term1|term2).)*my_term(?:(?!term1|term2).)*$
 ^^^^^^^^^^^^^^^^^^^^^       ^^^^^^^^^^^^^^^^^^^^^
python spacy look for chunks backwards (before a reference)

python spacy look for chunks backwards (before a reference)


By : user2934507
Date : March 29 2020, 07:55 AM
may help you . You can analyze the whole document and then just find the noun chunk before each reference, either by token position or character offset. The token offset of the last token in a noun chunk is noun_chunk[-1].i and the character offset of the start of the last token is noun_chunk[-1].idx. (Check that the analysis isn't affected by the presence of the reference strings; your example (1)-style references seem to be analyzed as appositives, which is fine.)
If the analysis is affected by the reference strings, remove them from the document while keeping track of their character offsets, analyze the whole document, and then find the noun chunks preceding the saved positions.
regex backwards search

regex backwards search


By : David Kabijila Tshis
Date : March 29 2020, 07:55 AM
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