future ( quot -- future )
Futures

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?future ( future -- value )

Vocabulary
concurrency.futures

Inputs

quot	a quotation with stack effect ( -- value )

Outputs

future

a future

Word description
Creates a deferred computation.

The quotation begins with an empty data stack, an empty catch stack, and a name stack containing the global namespace only. This means that the only way to pass data to the quotation is to partially apply the data, for example using curry or compose.

Definition

USING: accessors concurrency.mailboxes concurrency.promises
kernel ;

IN: concurrency.futures

: future ( quot -- future )
    <promise> [
        [ [ fulfill ] curry compose "Future" ] keep
        mailbox>> spawn-linked-to drop
    ] keep ; inline