harvest-keys ( assoc -- assoc' )
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Vocabulary
assocs

Inputs

assoc

an assoc

Outputs

assoc'

a new assoc

Word description
Outputs an assoc removing keys that are empty sequences.

Examples

USING: prettyprint assocs hashtables ; H{ { { 2 } 1 } { { } 3 } } harvest-keys .
H{ { { 2 } 1 } }

See also
sift-keys, sift-values, harvest-values

Definition

USING: kernel sequences ;

IN: assocs

: harvest-keys ( assoc -- assoc' )
    [ drop empty? ] assoc-reject ; inline