method

last

v1_8_7_330 - Show latest stable - Class: Array

last(...)

public

Returns the last element(s) of self. If the array is empty, the first form returns nil.

[ "w", "x", "y", "z" ].last   #=> "z"

/*
 *  call-seq:
 *     array.last     ->  obj or nil
 *     array.last(n)  ->  an_array
 *  
 *  Returns the last element(s) of <i>self</i>. If the array is empty,
 *  the first form returns <code>nil</code>.
 *     
 *     [ "w", "x", "y", "z" ].last   #=> "z"
 */

static VALUE
rb_ary_last(argc, argv, ary)
    int argc;
    VALUE *argv;
    VALUE ary;
{
    if (argc == 0) {
        if (RARRAY(ary)->len == 0) return Qnil;
        return RARRAY(ary)->ptr[RARRAY(ary)->len-1];
    }
    else {
        return ary_shared_first(argc, argv, ary, Qtrue);
    }
}

3Notes

Extracting the Last Element

tadman · Apr 16, 20091 thank

To remove the last element from the Array, use pop:

array = [ 1, 2, 3 ]           # => [ 1, 2, 3 ]
array.last                    # => 3
array                         # => [ 1, 2, 3 ]
array.pop                     # => 3
array                         # => [ 1, 2 ]

Last element of an array alternative

autonomous · Aug 18, 2008

You can also access the last element of an array with -1

[ "w", "x", "y", "z" ][-1] #=> "z"

Video Explanation of first, last and each

MattStopa · Mar 14, 2012

http://www.youtube.com/watch?feature=player_embedded&v=rQIJ0WJXOr8

last

3Notes

Extracting the Last Element

Last element of an array alternative

Video Explanation of first, last and each

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