method

upcase

v2_6_3 - Show latest stable - Class: String

upcase(*args)

public

Returns a copy of str with all lowercase letters replaced with their uppercase counterparts.

See String#downcase for meaning of options and use with different encodings.

"hEllO".upcase   #=> "HELLO"

static VALUE
rb_str_upcase(int argc, VALUE *argv, VALUE str)
{
    str = rb_str_dup(str);
    rb_str_upcase_bang(argc, argv, str);
    return str;
}