functions -> forms in lib.macros

This commit is contained in:
2025-02-10 07:13:16 +00:00
parent ef572b992b
commit c5d9888641

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@@ -19,7 +19,7 @@
(in-package :lib.macros)
(defmacro --> (&rest functions)
(defmacro --> (&rest forms)
"Lexically bind current form as `_' for use in the next form, returning the
result of the last form.
@@ -34,30 +34,29 @@ i.e.
Also includes transformer where symbols are considered unary functions i.e.
(--> x y) <-> (--> x (y _)).
"
(if (null functions)
(if (null forms)
nil
(let ((assignment-forms
(loop :for f :in functions
(loop :for f :in forms
:for canon-f = (if (symbolp f) (list f 'lib.macros:_) f)
:collect `(lib.macros:_ ,canon-f))))
`(let* ,assignment-forms
lib.macros:_))))
(defmacro ->> (&rest functions)
(defmacro ->> (&rest forms)
"Make current form the last argument of the next form, returning the last
form.
i.e.
(->> (a1 a2...) (b1 b2...) (c1 c2...)) == (c1 c2 ... (b1 b2 ... (a1 a2 ...)))
Also includes transformer where fun in functions that are symbols are considered
unary functions.
Also includes transformer where symbols are considered unary functions.
Like the `|>' operator in Ocaml."
(if (null functions)
(if (null forms)
nil
(loop :with acc = (car functions)
:for func :in (cdr functions)
(loop :with acc = (car forms)
:for func :in (cdr forms)
:for canon-func = (if (symbolp func) (list func) func)
:do (setq acc (append canon-func (list acc)))
:finally (return acc))))