instance method
String#concat
(*::string | ::Integer string_or_codepoints) -> self
concat(*objects) → string
string.c
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static VALUE
rb_str_concat_multi(int argc, VALUE *argv, VALUE str)
{
str_modifiable(str);
if (argc == 1) {
return rb_str_concat(str, 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_concat(arg_str, argv[i]);
}
rb_str_buf_append(str, arg_str);
}
return str;
}
Concatenates each object in objects to self; returns self:
Example
'foo'.concat('bar', 'baz') # => "foobarbaz"
For each given object object that is an integer, the value is considered a codepoint and converted to a character before concatenation:
Example
'foo'.concat(32, 'bar', 32, 'baz') # => "foo bar baz" # Embeds spaces. 'те'.concat(1089, 1090) # => "тест" 'こん'.concat(12395, 12385, 12399) # => "こんにちは"
Related: see Converting to New String.