Preview Ruby 4.1 is a preview. It can change before the final release. Switch to Ruby 4.0 →
instance method
Array#include?
(untyped object) -> bool
include?(object) → true or false
array.c
View on GitHub ↗
VALUE
rb_ary_includes(VALUE ary, VALUE item)
{
rb_len_t 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;
}
Returns whether for some element element in self, object == element:
Example
[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.