From 123c0ed2947fedf1fa2e441c1768a40c91f42b24 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lajos=20M=C3=A9sz=C3=A1ros?= <m_lajos@hotmail.com>
Date: Thu, 20 May 2021 14:21:01 +0200
Subject: [PATCH] Added A::none(), A::all() and F::complement()

---
 README.md |  7 +++++++
 src/A.php | 14 +++++++++++++-
 src/F.php | 11 +++++++++++
 3 files changed, 31 insertions(+), 1 deletion(-)
 create mode 100644 src/F.php

diff --git a/README.md b/README.md
index 587e8b3..18e0bf3 100644
--- a/README.md
+++ b/README.md
@@ -282,6 +282,9 @@ Plain numeric arrays are handled best via the methods in A, while associative ar
   // $result = true
   ```
 
+- **none** -
+- **all** -
+
 - **includes** -
 - **contains** -
 - **slice** -
@@ -529,6 +532,10 @@ Plain numeric arrays are handled best via the methods in A, while associative ar
 - **keys** -
 - **values** -
 
+### Functions
+
+- **complement** -
+
 ## Future plans
 
 I keep adding methods as I come across the need for them, so if you're missing a method you'd use, then 1) PRs are welcome, 2) Issues are welcome.
diff --git a/src/A.php b/src/A.php
index e34809a..0495ce1 100644
--- a/src/A.php
+++ b/src/A.php
@@ -265,7 +265,7 @@ public static function filter(callable $fn, array $data): array
 
     public static function reject(callable $fn, array $data): array
     {
-        return self::filter(fn($value) => !$fn($value), $data);
+        return self::filter(F::complement($fn), $data);
     }
 
     // A::find(x => x.a > 3, [['a' => 8], ['a' => 10]]) -> ['a' => 8]
@@ -306,6 +306,18 @@ public static function any(callable $fn, array $data): bool
         return self::find($fn, $data) !== null;
     }
 
+    // A::none(x => x % 2 === 1, [0, 2, 4, 6]) -> true
+    public static function none(callable $fn, array $data): bool
+    {
+        return !self::any($fn, $data);
+    }
+
+    // A::all(x => x % 2 === 0, [0, 2, 4, 6]) -> true
+    public static function all(callable $fn, array $data): bool
+    {
+        return !self::any(F::complement($fn), $data);
+    }
+
     // A::includes('baz', ['foo', 'bar', 'baz']) -> true
     public static function includes($value, array $data): bool
     {
diff --git a/src/F.php b/src/F.php
new file mode 100644
index 0000000..d1b73f7
--- /dev/null
+++ b/src/F.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Shovel;
+
+class F
+{
+    public static function complement(callable $fn): callable
+    {
+        return fn(...$args) => !$fn(...$args);
+    }
+}