From: matz@...
Date: 2014-07-19T11:16:40+00:00
Subject: [ruby-core:63871] [ruby-trunk - Feature #10069] [PATCH] Implement monadic operator for Matrix

Issue #10069 has been updated by Yukihiro Matsumoto.


As #10068, I like the idea, but unary operator has nothing related to inject though.

Matz.


----------------------------------------
Feature #10069: [PATCH] Implement monadic operator for Matrix
https://bugs.ruby-lang.org/issues/10069#change-47896

* Author: gogo tanaka
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
----------------------------------------
Before

```
m = Matrix[[1,2,3], [4,5,6]]
 
+ m
NoMethodError: undefined method `+@' for Matrix[[1, 2, 3], [4, 5, 6]]:Matrix

- m
NoMethodError: undefined method `-@' for Matrix[[1, 2, 3], [4, 5, 6]]:Matrix
```

After

```
m = Matrix[[1,2,3], [4,5,6]]

+ m
=> Matrix[[1, 2, 3], [4, 5, 6]]

- m
=> Matrix[[-1, -2, -3], [-4, -5, -6]]
```

I think monadic operator for Matrix is important, when I use operator as block. like that

```
matrix_ary.inject(:+)
```

---Files--------------------------------
implement_uplus_for_matrix.patch (762 Bytes)
implement_negate_for_matrix.patch (1.21 KB)


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