Method: Array#first

Defined in:

lib/source/ruby.rb

#first(n) ⇒ Object

call-seq:

ary.first    -> object or nil
ary.first(n) -> array

Returns the first element of ary, or an array of the first n elements of ary. If ary is empty, the first form returns nil and the second form returns an empty array.

a = %w(a b c d)

a.first       #=> "a"
a.first(1)    #=> ["a"]
a.first(3)    #=> ["a", "b", "c"]

# File 'lib/source/ruby.rb', line 2260

def first(n)
  `if(n!=null){for(var i=0,l=this.length,result=[],max=l<n?l:n;i<max;++i){result.push(this[i]);};return result;}`
  return `this.length==0?nil:this[0]`
end