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Code Issues 1 Releases Wiki Activity

Switch out by to before? in sort functions.

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Makes docstrings easier to read, and reduces confusion with sorted-by
and sort-by.
This commit is contained in:
Andrew Owen 2021-02-04 22:28:46 -07:00
parent d374e90033
commit 926b68d62e
1 changed files with 9 additions and 9 deletions
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18
src/boot/boot.janet
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@ -756,7 +756,7 @@
a a
(if (not= (> b a) (> b c)) b c))) (if (not= (> b a) (> b c)) b c)))
(defn- sort-help [a lo hi by] (defn- sort-help [a lo hi before?]
(when (< lo hi) (when (< lo hi)
(def pivot (def pivot
(median-of-three (in a hi) (in a lo) (median-of-three (in a hi) (in a lo)
@ -764,8 +764,8 @@
(var left lo) (var left lo)
(var right hi) (var right hi)
(while true (while true
(while (by (in a left) pivot) (++ left)) (while (before? (in a left) pivot) (++ left))
(while (by pivot (in a right)) (-- right)) (while (before? pivot (in a right)) (-- right))
(when (<= left right) (when (<= left right)
(def tmp (in a left)) (def tmp (in a left))
(set (a left) (in a right)) (set (a left) (in a right))
@ -773,14 +773,14 @@
(++ left) (++ left)
(-- right)) (-- right))
(if (>= left right) (break))) (if (>= left right) (break)))
(sort-help a lo right by) (sort-help a lo right before?)
(sort-help a left hi by)) (sort-help a left hi before?))
a) a)
(defn sort (defn sort
"Sort an array in-place. Uses quick-sort and is not a stable sort." "Sort an array in-place. Uses quick-sort and is not a stable sort."
[a &opt by] [a &opt before?]
(sort-help a 0 (- (length a) 1) (or by <))) (sort-help a 0 (- (length a) 1) (or before? <)))
(defn sort-by (defn sort-by
``Returns `ind` sorted by calling ``Returns `ind` sorted by calling
@ -790,8 +790,8 @@
(defn sorted (defn sorted
"Returns a new sorted array without modifying the old one." "Returns a new sorted array without modifying the old one."
[ind &opt by] [ind &opt before?]
(sort (array/slice ind) by)) (sort (array/slice ind) before?))
(defn sorted-by (defn sorted-by
``Returns a new sorted array that compares elements by invoking ``Returns a new sorted array that compares elements by invoking