diff options
Diffstat (limited to 'doc/syntax/literals.rdoc')
| -rw-r--r-- | doc/syntax/literals.rdoc | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/doc/syntax/literals.rdoc b/doc/syntax/literals.rdoc index 7fcd7ca3a3..438fd18d1e 100644 --- a/doc/syntax/literals.rdoc +++ b/doc/syntax/literals.rdoc @@ -147,22 +147,22 @@ be concatenated as long as a percent-string is not last. %q{a} 'b' "c" #=> "abc" "a" 'b' %q{c} #=> NameError: uninitialized constant q -One more way of writing strings is using <tt>?</tt>: - - ?a #=> "a" - -Basically only one character can be placed after <tt>?</tt>: - - ?abc #=> SyntaxError - -Exceptionally, <tt>\C-</tt>, <tt>\M-</tt> and their combination are allowed -before a character. They mean "control", "meta" and "control-meta" -respectively: - +There is also a character literal notation to represent single +character strings, which syntax is a question mark (<tt>?</tt>) +followed by a single character or escape sequence that corresponds to +a single codepoint in the script encoding: + + ?a #=> "a" + ?abc #=> SyntaxError + ?\n #=> "\n" + ?\s #=> " " + ?\\ #=> "\\" + ?\u{41} #=> "A" ?\C-a #=> "\x01" ?\M-a #=> "\xE1" ?\M-\C-a #=> "\x81" ?\C-\M-a #=> "\x81", same as above + ?あ #=> "あ" === Here Documents @@ -350,4 +350,3 @@ one of the array entries you must escape it with a "\\" character: If you are using "(", "[", "{", "<" you must close it with ")", "]", "}", ">" respectively. You may use most other non-alphanumeric characters for percent string delimiters such as "%", "|", "^", etc. - |