The @regex module contains a single class @regex, which is used for matching strings based on regular expressions.

@regex Methods

Create a new regular expression

Parameters

• pattern — the regular expression pattern

Return

• a new regular expression

Notes

The pattern should match the syntax of C++/Javascript's regex syntax.

Example

r = regex('(\\d\\d?) (\\w\\w\\w) (\\d\\d\\d\\d)')
s = 'Wed, 6 Dec 2023 21:43:12 UT'
print r.match(s) #null
print r.search(s) #[ "6 Dec 2023","6","Dec","2023" ]
print r.replace(s,'moo') #Wed, moo 21:43:12 UT

Match this regex against a string.

Parameters

• s — the string to match against

Return

• an array of strings corresponding to each match group or null if the string does not match

Notes

The first match group is the entire regular expression. Subsequent match groups correspond to parentheticals inside the regular expression.

Search for this regex inside a string.

Parameters

• s — the string in which to search

Return

• an array of strings corresponding to each match group or null if the regular expression was not found

Notes

The first match group is the entire regular expression. Subsequent match groups correspond to parentheticals inside the regular expression.

Search for all instances of this regex inside a string

Parameters

• s — the string in which to search

Return

• an array of arrays, one for each found instance, where each inner array is an array of strings corresponding to each match group

Notes

The first match group is the entire regular expression. Subsequent match groups correspond to parentheticals inside the regular expression.

Replace instances of this regular expression within a string.

Parameters

• s — the string in which to search
• fmt — the format of the replacement

Return

• a new string with all instances of the regular expression replaced by the format string

Notes

The format string should match the syntax of C++/Javascript's format string:

• $n — the nth match group
• $$ — a single $ character