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authorknu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-10-23 16:53:41 +0000
committerknu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2015-10-23 16:53:41 +0000
commit1b5dce5a4e7e202f00ddc8bc82ae644ca119106d (patch)
treec7de133562839f75481b2cf02a2f90b25cab3464
parent4daa1cf730acbf2838dcd69210f4beafabe83843 (diff)
* 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
-rw-r--r--ChangeLog7
-rw-r--r--NEWS5
-rw-r--r--doc/syntax/calling_methods.rdoc2
3 files changed, 12 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 61a5092..abded68 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Oct 24 01:51:01 2015 Akinori MUSHA <knu@iDaemons.org>
+
+ * 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.
+
Sat Oct 24 00:38:34 2015 Shugo Maeda <shugo@ruby-lang.org>
* lib/forwardable (def_instance_delegator, def_single_delegator):
diff --git a/NEWS b/NEWS
index 6be8737..1433dee 100644
--- a/NEWS
+++ b/NEWS
@@ -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
diff --git a/doc/syntax/calling_methods.rdoc b/doc/syntax/calling_methods.rdoc
index db0217c..99ec48a 100644
--- a/doc/syntax/calling_methods.rdoc
+++ b/doc/syntax/calling_methods.rdoc
@@ -29,7 +29,7 @@ NoMethodError.
You may use <code>.?</code> to designate a receiver, then +my_method+ is not
invoked and the result is +nil+ when the receiver is +nil+. In that case, the
-argument of +my_method+ are not evaluated.
+arguments of +my_method+ are not evaluated.
You may also use <code>::</code> to designate a receiver, but this is rarely
used due to the potential for confusion with <code>::</code> for namespaces.