with-scope ( quot -- ) - Factor Documentation

Vocabulary
namespaces

Inputs and outputs

quot	a quotation

Word description
Calls the quotation in a new namespace. Any variables set by the quotation are discarded when it returns.

Examples

USING: math namespaces prettyprint ;
IN: scratchpad
SYMBOL: x
0 x set
[ x [ 5 + ] change x get . ] with-scope x get .
5
0

Definition

USING: hashtables kernel ;

IN: namespaces

: with-scope ( quot -- ) 5 <hashtable> swap with-variables
    ; inline

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