Feature #12746
closed
class Array: alias .prepend to .unshift ?
Description
This code works:
array = %w( b c ) # => ["b", "c"]
array.unshift "a"
array # => ["a", "b", "c"]
I would like for .prepend to also work on class Array.
Rationale:
I found myself to sometimes .prepend to a String object
in Ruby, which works very well.
Sometimes I do not want to care whether I have a String
or an Array, I just want to prepend stuff (add to the
beginning).
I can do so via .unshift, fair enough, and I also can
use [] such as:
array[0,0] = 'a'
Which works on both class String and Array.
Since class Hash is sorted (kept in order) these days,
perhaps they can also use a .prepend variant, which
either works for prepending both a key-value pair,
or optionally, to make the value default to nil and
just provide a key (if the user does not need to
specify a specific value) such as:
hash.prepend :cat
hash.prepend cat: :Tom
But primarily, I only ask for class Array since I
have had use cases for class Array; I did not yet
have a similar use case for class Hash.
Feel free to close this if it is considered unwanted
for any reason!
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