From: halogenandtoast@...
Date: 2016-09-02T09:27:48+00:00
Subject: [ruby-core:77125] [Ruby trunk Bug#12719] `Struct#|` for partial	updates

Issue #12719 has been reported by Matthew Mongeau.

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Bug #12719: `Struct#|` for partial updates
https://bugs.ruby-lang.org/issues/12719

* Author: Matthew Mongeau
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: 
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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Other languages have operators for performing partial updates on maps. I feel like Struct could be more useful if it provided an easy way of performing partial (or full) updates.

After the change you can do the following:

~~~ ruby
Point = Struct.new(:x, :y)

p = Point.new(1, 2)
p2 = p | { y: 4 }
p3 = p2 | { x: 10 }

puts p.inspect # => #<struct Point x=1, y=2>
puts p2.inspect # => #<struct Point x=1, y=4>
puts p3.inspect # => #<struct Point x=10, y=4>
~~~


---Files--------------------------------
struct_update.patch (2.04 KB)


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