1 Returns a new \String that is a copy of +string+.
3 With no arguments, returns the empty string with the Encoding <tt>ASCII-8BIT</tt>:
7 s.encoding # => #<Encoding:ASCII-8BIT>
9 With optional argument +string+ and no keyword arguments,
10 returns a copy of +string+ with the same encoding:
12 String.new('foo') # => "foo"
13 String.new('тест') # => "тест"
14 String.new('こんにちは') # => "こんにちは"
17 a {string literal}[rdoc-ref:syntax/literals.rdoc@String+Literals] like <tt>''</tt> or a
18 {here document literal}[rdoc-ref:syntax/literals.rdoc@Here+Document+Literals]
19 always has {script encoding}[rdoc-ref:encodings.rdoc@Script+Encoding].)
21 With optional keyword argument +encoding+, returns a copy of +string+
22 with the specified encoding;
23 the +encoding+ may be an Encoding object, an encoding name,
24 or an encoding name alias:
26 String.new('foo', encoding: Encoding::US_ASCII).encoding # => #<Encoding:US-ASCII>
27 String.new('foo', encoding: 'US-ASCII').encoding # => #<Encoding:US-ASCII>
28 String.new('foo', encoding: 'ASCII').encoding # => #<Encoding:US-ASCII>
30 The given encoding need not be valid for the string's content,
31 and that validity is not checked:
33 s = String.new('こんにちは', encoding: 'ascii')
34 s.valid_encoding? # => false
36 But the given +encoding+ itself is checked:
38 String.new('foo', encoding: 'bar') # Raises ArgumentError.
40 With optional keyword argument +capacity+, returns a copy of +string+
41 (or an empty string, if +string+ is not given);
42 the given +capacity+ is advisory only,
43 and may or may not set the size of the internal buffer,
44 which may in turn affect performance:
46 String.new(capacity: 1)
47 String.new('foo', capacity: 4096)
49 The +string+, +encoding+, and +capacity+ arguments may all be used together:
51 String.new('hello', encoding: 'UTF-8', capacity: 25)