From 4043a99e0df9fab6791c485721c0046971754175 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Sun, 6 Apr 2025 14:52:59 -0400
Subject: Expand reducers so they support stuff like `(+.abs(): nums)` and
 `(==.length: texts)`

---
 docs/reductions.md | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'docs')

diff --git a/docs/reductions.md b/docs/reductions.md
index 7aadd30b..3cbb6d5d 100644
--- a/docs/reductions.md
+++ b/docs/reductions.md
@@ -69,10 +69,10 @@ a collection using the `_min_` and `_max_` infix operators.
 = 10
 ```
 
-The `_min_` and `_max_` operators also support field and method call suffixes,
-which makes it very easy to compute the argmin/argmax (or keyed
-minimum/maximum) of a collection. This is when you want to get the minimum or
-maximum value _according to some feature_.
+Reducers also support field and method call suffixes, which makes it very easy
+to compute the argmin/argmax (or keyed minimum/maximum) of a collection. This
+is when you want to get the minimum or maximum value _according to some
+feature_.
 
 ```tomo
 # Get the longest text:
@@ -84,6 +84,22 @@ maximum value _according to some feature_.
 = -4
 ```
 
+You can also use suffixes on other operators:
+
+```tomo
+texts := ["x", "y", "z"]
+>> (==: texts)
+= no
+>> (==.length: texts)
+= yes
+>> (+.length: texts)
+= 3
+
+nums := [1, 2, -3]
+>> (+.abs(): nums)
+= 6
+```
+
 ## Comprehensions
 
 Reductions work not only with iterable values (arrays, sets, integers, etc.),
-- 
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