2keep ( ..a x y quot: ( ..a x y -- ..b ) -- ..b x y )
Factor handbook » The language » Combinators » Dataflow combinators » Preserving combinators

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Vocabulary
kernel

Inputs

x	an object
y	an object
quot	a quotation with stack effect ( ..a x y -- ..b )

Outputs

x	an object
y	an object

Word description
Calls a quotation with two values on the stack, restoring the values when the quotation returns.

Definition

IN: kernel

: 2keep ( ..a x y quot: ( ..a x y -- ..b ) -- ..b x y )
    [ 2dup ] dip 2dip ; inline