haystacklib ~master (2019-10-21T14:33:42Z)

missing

haystack tag

Check if Dict misses the column.

  1. bool missing(const(Dict) dict, string col)
    pure nothrow
    bool
    missing
    (
    const(Dict) dict
    ,
    string col
    )
  2. bool missing(const(Dict) dict, string key)

Return Value

Type: bool

true if dict doe not contain the column.

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