[#103241] [Ruby master Bug#17777] 2.6.7 fails to build on macOS: implicit declaration of function 'rb_native_mutex_destroy' is invalid in C99 — eregontp@...
Issue #17777 has been reported by Eregon (Benoit Daloze).
17 messages
2021/04/05
[#103305] [Ruby master Feature#17785] Allow named parameters to be keywords — marcandre-ruby-core@...
Issue #17785 has been reported by marcandre (Marc-Andre Lafortune).
21 messages
2021/04/08
[#103342] [Ruby master Feature#17790] Have a way to clear a String without resetting its capacity — jean.boussier@...
Issue #17790 has been reported by byroot (Jean Boussier).
14 messages
2021/04/09
[#103388] [ANN] Multi-factor Authentication of bugs.ruby-lang.org — SHIBATA Hiroshi <hsbt@...>
Hello,
5 messages
2021/04/12
[#103414] Re: [ANN] Multi-factor Authentication of bugs.ruby-lang.org
— Martin J. Dürst <duerst@...>
2021/04/13
Is there a way to use this multi-factor authentication for (like me)
[#103547] List of CI sites to check — Martin J. Dürst <duerst@...>
Hello everybody,
4 messages
2021/04/22
[#103596] [Ruby master Feature#17830] Add Integer#previous and Integer#prev — rafasoaresms@...
Issue #17830 has been reported by rafasoares (Rafael Soares).
9 messages
2021/04/26
[ruby-core:103481] [Ruby master Feature#17808] Feature Request: JS like splat of Object properties as named method parameters
From:
brad.krane@...
Date:
2021-04-16 12:19:00 UTC
List:
ruby-core #103481
Issue #17808 has been reported by Lithium (Brad Krane).
----------------------------------------
Feature #17808: Feature Request: JS like splat of Object properties as named method parameters
https://bugs.ruby-lang.org/issues/17808
* Author: Lithium (Brad Krane)
* Status: Open
* Priority: Normal
----------------------------------------
I'm pretty sure there is no equivalent Ruby for a very convenient JS way to enter named function parameters as below:
``` javascript
const test = ({param1,
param2,
param3 = null,
param4 = false,
param5 = null,
}={}) => {
console.log(`${param1}, ${param2}, ${param3}, ${param4}, ${param5}\n`)
}
let obj = {
param1: 23,
param2: 234,
param3: 235,
param4: 257
};
test({...obj});
```
which is super convenient and as far as I'm aware there is no standard Ruby equivalent. It can be accomplished in Ruby but the call syntax is far less nice. A couple examples below:
``` ruby
# Implementing such a feature wouldn't be too difficult.
# Ok so here is what you could do it. Patch Kernel with a method splat. (Sorry in advance for formatting)
module Kernel
def splat obj, method:
new_hash = method.parameters.reduce({}) do |hash, attrr|
hash[attrr.last] = obj.send(attrr.last)
hash
end
end
end
# Then you can pass it a list of symbols.
# Then for your method:
def some_method name:, weight:
puts "#{name} weighs #{weight}"
end
class Dog
attr_reader :name, :weight
def initialize name:,weight:
@name = name
@weight = weight
end
end
a_dog = Dog.new( name: 'fido', weight: '7kg')
hash_puppy = a_dog.splat(a_dog, method: method(:some_method) )
some_method(**hash_puppy)
```
or what I think is a bit better:
``` ruby
# Same class as above
a_dog = Dog.new( name: 'fido', weight: '7kg')
def other_splat obj, method:
new_hash = method.parameters.reduce({}) do |hash, attrr|
if obj.class <= Hash
hash[attrr.last] = obj[attrr.last]
else
hash[attrr.last] = obj.send attrr.last
end
hash
end
method.call **new_hash
end
other_splat(a_dog, method: method(:some_method))
# above line should be like:
# some_method ...a_dog
```
Source: https://gist.github.com/bradkrane/e051d205024a5313cb4a5b9eb1eae0e3
I'm sure I'm missing a possibly more clever way to accomplish this, but I'm pretty sure something like `other_splat(a_dog, method: method(:some_method))` is about as close as it can get, unless I'm missing something? It would be quite nice to have a similar syntax as JS but in Ruby: `some_method ...a_dog`
Thanks for your time and attention!
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