method

include?

Ruby latest stable (v2_5_5) - 0 notes - Class: Range

include?(p1) public

Returns true if obj is an element of the range, false otherwise. If begin and end are numeric, comparison is done according to the magnitude of the values.

("a".."z").include?("g")   #=> true
("a".."z").include?("A")   #=> false
("a".."z").include?("cc")  #=> false

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static VALUE
range_include(VALUE range, VALUE val)
{
    VALUE beg = RANGE_BEG(range);
    VALUE end = RANGE_END(range);
    int nv = FIXNUM_P(beg) || FIXNUM_P(end) ||
             linear_object_p(beg) || linear_object_p(end);

    if (nv ||
        !NIL_P(rb_check_to_integer(beg, "to_int")) ||
        !NIL_P(rb_check_to_integer(end, "to_int"))) {
        return r_cover_p(range, beg, end, val);
    }
    else if (RB_TYPE_P(beg, T_STRING) && RB_TYPE_P(end, T_STRING)) {
        VALUE rb_str_include_range_p(VALUE beg, VALUE end, VALUE val, VALUE exclusive);
        return rb_str_include_range_p(beg, end, val, RANGE_EXCL(range));
    }
    /* TODO: ruby_frame->this_func = rb_intern("include?"); */
    return rb_call_super(1, &val);
}

include?

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