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| author | drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-01-23 01:35:16 +0000 |
|---|---|---|
| committer | drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-01-23 01:35:16 +0000 |
| commit | 27841296538ece9c149d85da72c9234ad08556d2 (patch) | |
| tree | 8357a7f69d5ccbb06c1283c2090f790d19be705b /doc/syntax | |
| parent | 98b82acf6f18176b932b6145bb2bf3a21022a67d (diff) | |
| download | ruby-27841296538ece9c149d85da72c9234ad08556d2.tar.gz | |
* doc/syntax/assignment.rdoc (Local Variables and Methods): Fixed
example showing caching of a method's results into a local variable.
Added not about using an explicit receiver to call a method that
matches a local variable. Suggested by markov_twain on twitter.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38901 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'doc/syntax')
| -rw-r--r-- | doc/syntax/assignment.rdoc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/syntax/assignment.rdoc b/doc/syntax/assignment.rdoc index c371593fbe..7e586225b9 100644 --- a/doc/syntax/assignment.rdoc +++ b/doc/syntax/assignment.rdoc @@ -86,11 +86,15 @@ code, for example: 42 # pretend this takes a long time end - big_calculation = big_calculation + big_calculation = big_calculation() Now any reference to +big_calculation+ is considered a local variable and will be cached. To call the method, use <code>self.big_calculation</code>. +You can force a method call by using empty argument parentheses as shown above +or by using an explicit receiver like <code>self.</code>. Using an explicit +receiver may raise a NameError if the method's visibility is not public. + Another commonly confusing case is when using a modifier +if+: p a if a = 0.zero? |