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PHP: $result = $arr |> fn($x) => array_column($x, 'tags') // Gets an array of arrays |> fn($x) => array_merge(...$x) // F

PHP: $result = $arr |> fn($x) => array_column($x, 'tags') // Gets an array of arrays |> fn($x) => array_merge(...$x) // Flatten into one big array |> array_unique(...) // Remove duplicates |> array_values(...) // Reindex the array. ; // <- wtf Ruby: result = arr.uniq.flatten.map(&:tags) I understand this is not pipe operator, but just look at that character difference across these two languages. // <- wtf This comment was my $0.02.

moebrowne 1y ago
The trailing semi-colon on a new line helps prevent Git conflicts and gives cleaner diffs. It's the same reason PHP allows trailing commas in all lists.
Alifatisk 1y ago
Can't the pipe operator be easily mimicked in Ruby thanks to its flexibility? I'm thinking of something like this: class Object def |>(fn) fn.call(self) end end which then can be in the following way: result = arr |> ->(a) { a.uniq } |> ->(a) { a.flatten } |> ->(a) { a.map(&:tags) } Or if we just created an alias for then #then method: class Object alias_method :|>, :then end then it can be used like in this way: arr |> :uniq.to_proc |> :flatten.to_proc |> ->(a) { a.map(&:tags) }
- rafark 1y ago
  The great thing about this pipe operator is that it accepts any callable expression. I’m writing a library to make these array and string functions more expressive. For example, in php 8.5 you’ll be able to do: [1,1,2,3,2] |> unique And then define “unique” as a constant with a callback assigned to it, roughly like: const unique = static fn(array $array) : array => array_unique($array); Much better.
daneel_w 1y ago
Putting the delimiter on a line of its own is a syntactical trick that helps bringing small additions down to a neater 1-line diff instead of a 2-line diff. You've probably run into it many times before in other contexts without thinking of it. Arrays/hashes, quoted multi-line strings etc.
hu3 1y ago
People use Laravel Collections or similar Symfony array wrapper to achieve chaining. Most PHP code I see look like your Ruby example.

moebrowne 1y ago

The trailing semi-colon on a new line helps prevent Git conflicts and gives cleaner diffs. It's the same reason PHP allows trailing commas in all lists.

Alifatisk 1y ago

Can't the pipe operator be easily mimicked in Ruby thanks to its flexibility? I'm thinking of something like this: class Object def |>(fn) fn.call(self) end end which then can be in the following way: result = arr |> ->(a) { a.uniq } |> ->(a) { a.flatten } |> ->(a) { a.map(&:tags) } Or if we just created an alias for then #then method: class Object alias_method :|>, :then end then it can be used like in this way: arr |> :uniq.to_proc |> :flatten.to_proc |> ->(a) { a.map(&:tags) }

rafark 1y ago
The great thing about this pipe operator is that it accepts any callable expression. I’m writing a library to make these array and string functions more expressive. For example, in php 8.5 you’ll be able to do: [1,1,2,3,2] |> unique And then define “unique” as a constant with a callback assigned to it, roughly like: const unique = static fn(array $array) : array => array_unique($array); Much better.

daneel_w 1y ago

Putting the delimiter on a line of its own is a syntactical trick that helps bringing small additions down to a neater 1-line diff instead of a 2-line diff. You've probably run into it many times before in other contexts without thinking of it. Arrays/hashes, quoted multi-line strings etc.

hu3 1y ago

People use Laravel Collections or similar Symfony array wrapper to achieve chaining. Most PHP code I see look like your Ruby example.