Vocabulary
math.statistics

Inputs and outputs

assoc	an assoc
seq	a sequence
map-quot	a quotation
insert-quot	a quotation

Word description
Iterates over a sequence, allowing elements of the sequence to be added to an existing assoc. The map-quot gets passed each element from the sequence. Its outputs are passed along with the assoc being constructed to the insert-quot, which can modify the assoc in response.

Examples

! Iterate over a sequence and add the counts to an existing assoc USING: assocs prettyprint math.statistics kernel ; H{ { 97 2 } { 98 1 } } clone "aaabc" [ ] [ inc-at ] sequence>assoc! .
H{ { 97 5 } { 98 2 } { 99 1 } }

Definition

USING: generalizations math.statistics.private ;

IN: math.statistics

: sequence>assoc!
( assoc seq map-quot: ( x -- ..y ) insert-quot: ( ..y assoc -- ) -- assoc )
4 nrot (sequence>assoc) ; inline