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author | knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-10-23 16:53:41 +0000 |
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committer | knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-10-23 16:53:41 +0000 |
commit | 1b5dce5a4e7e202f00ddc8bc82ae644ca119106d (patch) | |
tree | c7de133562839f75481b2cf02a2f90b25cab3464 /NEWS | |
parent | 4daa1cf730acbf2838dcd69210f4beafabe83843 (diff) | |
download | ruby-1b5dce5a4e7e202f00ddc8bc82ae644ca119106d.tar.gz |
* NEWS: [DOC] In the new safe call syntax, arguments are evaluated
only if a call is made.
* doc/syntax/calling_methods.rdoc: Fix a typo.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52251 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'NEWS')
-rw-r--r-- | NEWS | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -22,10 +22,13 @@ with all sufficient information, see the ChangeLog file. * new method call syntax, `object.?foo', method #foo is called on `object' if it is not nil. - this is similar to `try!' in Active Support, except for: + this is similar to `try!' in Active Support, except: * method name is syntactically required obj.try! {} # valid obj.? {} # syntax error + * arguments are evaluated only if a call is made: + obj.try!(:foo, bar()) # bar() is always evaluated + obj.?foo(bar()) # bar() is conditionally evaluated * attribute assignment is valid obj.?attr += 1 |