From 015d9cd399100427b3e82fb183c81d034f00cd8c Mon Sep 17 00:00:00 2001 From: Marshall Lochbaum Date: Fri, 4 Sep 2020 21:33:13 -0400 Subject: Use atom for non-array throughout docs --- docs/doc/group.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'docs/doc/group.html') diff --git a/docs/doc/group.html b/docs/doc/group.html index 57ab5562..25bc3748 100644 --- a/docs/doc/group.html +++ b/docs/doc/group.html @@ -7,7 +7,7 @@

Group

BQN replaces the Key operator from J or Dyalog APL, and many forms of partitioning, with a single (ambivalent) Group function ⊔. This function is somewhat related to the K function = of the same name, but results in an array rather than a dictionary.

Definition

-

Group operates on a numeric list of indices and an array, treated as a list of its major cells or "values", to produce a list of groups, each of which is a selection from those cells. The two arrays have the same length, and each value cell is paired with the index at the same position. That index indicates the result group the cell should go into, with an "index" of ¯1 indicating that it should be dropped and not appear in the result.

+

Group operates on a list of atomic-number indices and an array, treated as a list of its major cells or "values", to produce a list of groups, each of which is a selection from those cells. The two arrays have the same length, and each value cell is paired with the index at the same position. That index indicates the result group the cell should go into, with an "index" of ¯1 indicating that it should be dropped and not appear in the result.

↗️
    0‿1‿2‿0‿1 ≍ "abcde"  # Corresponding indices and values
 ┌─                     
 ╵ 0   1   2   0   1    
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