grab

Undocumented in source. Be warned that the author may not have intended to support it.
  1. auto grab(R1 seq, R2 choices)
  2. S1 grab(S1 seq, S2 choices)
    S1
    grab
    (
    alias pred = "a == b"
    S1
    S2
    )
    (
    ref S1 seq
    ,)
    if (
    hasSlicing!S1 &&
    isForwardRange!S2
    )

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