From 68b072bfbabdcd78b4d7980c15ab83163ecbacd3 Mon Sep 17 00:00:00 2001
From: drbrain <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 15 Jan 2013 04:33:28 +0000
Subject: * doc/syntax/methods.rdoc (Method Names):  Added method names
 including   operator methods. * doc/syntax/methods.rdoc (Return Values): 
 Added note that assignment   methods ignore return values. *
 doc/syntax/precedence.rdoc:  Added document describing precedence.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 doc/syntax/precedence.rdoc | 60 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 doc/syntax/precedence.rdoc

(limited to 'doc/syntax/precedence.rdoc')

diff --git a/doc/syntax/precedence.rdoc b/doc/syntax/precedence.rdoc
new file mode 100644
index 0000000000..515626c74f
--- /dev/null
+++ b/doc/syntax/precedence.rdoc
@@ -0,0 +1,60 @@
+= Precedence
+
+From highest to lowest, this is the precedence table for ruby.  High precedence
+operations happen before low precedence operations.
+
+  !, ~, unary +
+
+  **
+
+  unary -
+
+  *, /, %
+
+  +, -
+
+  <<, >>
+
+  &
+
+  |, ^
+
+  >, >=, <, <=
+
+  <=>, ==, ===, !=, =~, !~
+
+  &&
+
+  ||
+
+  .., ...
+
+  ?, :
+
+  modifier-rescue
+
+  =, +=, -=, etc.
+
+  defined?
+
+  not
+
+  or, and
+
+  modifier-if, modifier-unless, modifier-while, modifier-until
+
+  { } blocks
+
+Unary <code>+</code> and unary <code>-</code> are for <code>+1</code>,
+<code>-1</code> or <code>-(a + b)</code>.
+
+Modifier-if, modifier-unless, etc. are for the modifier versions of those
+keywords.  For example, this is a modifier-unless expression:
+
+  a += 1 unless a.zero?
+
+<code>{ ... }</code> blocks have priority below all listed operations, but
+<code>do ... end</code> blocks have lower priority.
+
+All other words in the precedence table above are keywords.
+
-- 
cgit v1.2.3