QGIS/resources/function_help/json/regexp_matches
nirvn 1d245b2ef6 [FEATURE] add regexp_matches() function
The new function returns an array of strings captured by capturing
groups in a supplied regular expression. For e.g., the following
expression: regexp_matches('qgis=>rocks','(.*)=>(.*)')
will return the following array: 'qgis', 'rocks'.
2016-11-07 10:47:19 +07:00

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{
"name": "regexp_matches",
"type": "function",
"description": "Returns an array of all strings captured by capturing groups, in the order the groups themselves appear in the supplied regular expression against a string.",
"arguments": [
{"arg":"string", "description":"the string to capture groups from against the regular expression"},
{"arg":"regex","description":"the regular expression used to capture groups"},
{"arg":"empty_value","optional":true,"default":"''","description":"the optional string to use as replacement for empty (zero length) matches"}],
"examples": [ { "expression":"regexp_matches('qgis=>rocks','(.*)=>(.*)')", "returns":"array: 'qgis', 'rocks'"},
{ "expression":"regexp_matches('key=>','(.*)=>(.*)','empty value')", "returns":"array: 'key', 'empty value'"}
]
}