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    TLookupList.FirstKeyByValue

    Find the first key that matches a value.

    Declaration

    Source position: db.pas line 281

    public 
function TLookupList.FirstKeyByValue(const AValue: Variant) : Variant;

    Description

    FirstKeyByValue does a reverse lookup: it returns the first key value in the list that matches the AValue value. If none is found, Null is returned. This mechanism is quite slow, as a linear search is performed.

    Errors

    If no key is found, Null is returned.

    See also

    Name Description
    TLookupList.ValueOfKey Look up value based on a key.