key for value in map(value a, name of map b, c true for contains)
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Group |
This function returns you the key to a value a in map b. If no key is found, an empty string is returned.
Description of Parameters
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Parameter |
Description |
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a |
Value. |
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b |
Name of the map. |
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c |
true for contains instead equals, i.e. value a only has to be contained in the map value and does not have to be identical. |