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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

String#size

() -> ::Integer
size

Alias of #length

Returns the count of characters (not bytes) in self:

Example
'foo'.length        # => 3
'тест'.length       # => 4
'こんにちは'.length   # => 5

Contrast with String#bytesize:

Example
'foo'.bytesize        # => 3
'тест'.bytesize       # => 8
'こんにちは'.bytesize   # => 15
See also #length #shellsplit #slice #shellescape also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0