show-vars ( seq -- )
Factor handbook » Developer tools » The listener » Watching variables in the listener

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Vocabulary
listener

Inputs

seq	a sequence of variable names

Outputs
None

Word description
Adds a sequence of variables to the watch list; their values will be printed by the listener after every expression.

Definition

USING: kernel namespaces sets ;

IN: listener

: show-vars ( seq -- ) visible-vars [ swap union ] change ;