method

prepend

ruby latest stable - Class: String

prepend(*args)

public

Prepend—Prepend the given strings to str.

a = "!"
a.prepend("hello ", "world") #=> "hello world!"
a                            #=> "hello world!"

See also String#concat.

static VALUE
rb_str_prepend_multi(int argc, VALUE *argv, VALUE str)
{
    str_modifiable(str);

    if (argc == 1) {
        rb_str_update(str, 0L, 0L, argv[0]);
    }
    else if (argc > 1) {
        int i;
        VALUE arg_str = rb_str_tmp_new(0);
        rb_enc_copy(arg_str, str);
        for (i = 0; i < argc; i++) {
            rb_str_append(arg_str, argv[i]);
        }
        rb_str_update(str, 0L, 0L, arg_str);
    }

    return str;
}

prepend

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