QGIS/resources/function_help/json/regexp_matches

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{
"name": "regexp_matches",
"type": "function",
"groups": ["Arrays"],
"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": "[ 'QGIS', 'rocks' ]"
}, {
"expression": "regexp_matches('key=>','(.*)=>(.*)','empty value')",
"returns": "[ 'key', 'empty value' ]"
}],
"tags": ["array", "groups", "capturing", "captured", "order", "appear", "supplied", "regular", "strings"]
}