diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/syntax/calling_methods.rdoc | 18 | ||||
| -rw-r--r-- | doc/syntax/literals.rdoc | 8 |
2 files changed, 26 insertions, 0 deletions
diff --git a/doc/syntax/calling_methods.rdoc b/doc/syntax/calling_methods.rdoc index fc806d5c31..da061dbfdb 100644 --- a/doc/syntax/calling_methods.rdoc +++ b/doc/syntax/calling_methods.rdoc @@ -210,6 +210,24 @@ definition. If a keyword argument is given that the method did not list, and the method definition does not accept arbitrary keyword arguments, an ArgumentError will be raised. +Keyword argument value can be omitted, meaning the value will be be fetched +from the context by the name of the key + + keyword1 = 'some value' + my_method(positional1, keyword1:) + # ...is the same as + my_method(positional1, keyword1: keyword1) + +Be aware that when method parenthesis are omitted, too, the parsing order might +be unexpected: + + my_method positional1, keyword1: + + some_other_expression + + # ...is actually parsed as + my_method(positional1, keyword1: some_other_expression) + === Block Argument The block argument sends a closure from the calling scope to the method. diff --git a/doc/syntax/literals.rdoc b/doc/syntax/literals.rdoc index 66e17fd503..32fe5110ce 100644 --- a/doc/syntax/literals.rdoc +++ b/doc/syntax/literals.rdoc @@ -356,6 +356,14 @@ is equal to { :"a 1" => 1, :"b 2" => 2 } +Hash values can be omitted, meaning that value will be fetched from the context +by the name of the key: + + x = 100 + y = 200 + h = { x:, y: } + #=> {:x=>100, :y=>200} + See Hash for the methods you may use with a hash. == \Range Literals |