diff --git a/extra/partial-apply/partial-apply.factor b/extra/partial-apply/partial-apply.factor new file mode 100644 index 0000000000..0340e53025 --- /dev/null +++ b/extra/partial-apply/partial-apply.factor @@ -0,0 +1,26 @@ + +USING: kernel sequences quotations math parser + shuffle combinators.cleave combinators.lib sequences.lib ; + +IN: partial-apply + +! Basic conceptual implementation. Todo: get it to compile. + +: apply-n ( obj quot i -- quot ) 1+ [ -nrot ] curry swap compose curry ; + +SYMBOL: _ + +SYMBOL: ~ + +: blank-positions ( quot -- seq ) + [ length 2 - ] [ _ indices ] bi [ - ] map-with ; + +: partial-apply ( pattern -- quot ) + [ blank-positions length nrev ] + [ peek 1quotation ] + [ blank-positions ] + tri + [ apply-n ] each ; + +: $[ \ ] [ >quotation ] parse-literal \ partial-apply parsed ; parsing +