method

+

v1_8_6_287 - Show latest stable - 2 notes - Class: Array

+(p1) public

Concatenation—Returns a new array built by concatenating the two arrays together to produce a third array.

   [ 1, 2, 3 ] + [ 4, 5 ]    #=> [ 1, 2, 3, 4, 5 ]

Show source

/* 
 *  call-seq:
 *     array + other_array   -> an_array
 *
 *  Concatenation---Returns a new array built by concatenating the
 *  two arrays together to produce a third array.
 * 
 *     [ 1, 2, 3 ] + [ 4, 5 ]    #=> [ 1, 2, 3, 4, 5 ]
 */

VALUE
rb_ary_plus(x, y)
    VALUE x, y;
{
    VALUE z;
    long len;

    y = to_ary(y);
    len = RARRAY(x)->len + RARRAY(y)->len;
    z = rb_ary_new2(len);
    MEMCPY(RARRAY(z)->ptr, RARRAY(x)->ptr, VALUE, RARRAY(x)->len);
    MEMCPY(RARRAY(z)->ptr + RARRAY(x)->len, RARRAY(y)->ptr, VALUE, RARRAY(y)->len);
    RARRAY(z)->len = len;
    return z;
}

January 4, 2012

0 thanks

Total Unique Elements from Two Arrays

Simple but thought it was worth mentioning:

( [ 1, 2, 3 ] + [ 3, 4, 5 ] ).uniq    #=> [ 1, 2, 3, 4, 5 ]

January 11, 2012

0 thanks

Total Unique Elements: Set Union

For total unique elements, see set union: http://apidock.com/ruby/Array/|

+

Related methods

Total Unique Elements from Two Arrays

Total Unique Elements: Set Union