Method: Array#include?

Defined in:
array.c

#include?(object) ⇒ Boolean

Returns whether for some element element in self, object == element:

[0, 1, 2].include?(2)   # => true
[0, 1, 2].include?(2.0) # => true
[0, 1, 2].include?(2.1) # => false

Related: see Methods for Querying.

Returns:

  • (Boolean) 


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# File 'array.c', line 5366

VALUE
rb_ary_includes(VALUE ary, VALUE item)
{
    long i;
    VALUE e;

    for (i=0; i<RARRAY_LEN(ary); i++) {
        e = RARRAY_AREF(ary, i);
        if (rb_equal(e, item)) {
            return Qtrue;
        }
    }
    return Qfalse;
}