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* sprintf.c: add short documentation about named reference.
	  [ruby-core:31294]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@28722 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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mame 2010-07-22 13:58:10 +00:00
parent 7909d9d0c7
commit a4f2d6fec4
3 changed files with 17 additions and 0 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
Thu Jul 22 22:38:32 2010 NARUSE, Yui <naruse@ruby-lang.org>
* sprintf.c: add short documentation about named reference.
[ruby-core:31294]
Thu Jul 22 22:14:59 2010 NARUSE, Yui <naruse@ruby-lang.org>
* regexec.c (onig_search): don't skip non-ANYCHARs when

9
sprintf.c
View file

@ -420,6 +420,15 @@ get_hash(volatile VALUE *hash, int argc, const VALUE *argv)
* sprintf("%1$*2$s %2$d", "hello", -8) #=> "hello -8"
* sprintf("%+g:% g:%-g", 1.23, 1.23, 1.23) #=> "+1.23: 1.23:1.23"
* sprintf("%u", -123) #=> "-123"
*
* For more complex formatting, Ruby supports a reference by name.
* %<name>s style uses format style, but ${name} style doesn't.
*
* Exapmles:
* sprintf("%<foo>d : %<bar>f" % { :foo => 1, :bar => 2 })
* #=> 1 : 2.000000
* sprintf("%d %{foo}" % { :foo => 'bar' })
* # => "%d bar"
*/
VALUE

3
test/ruby/test_sprintf.rb
View file

@ -294,5 +294,8 @@ class TestSprintf < Test::Unit::TestCase
assert_equal("value", sprintf("%<key>s", :key => "value"))
assert_raise(ArgumentError) {sprintf("%1$<key2>s", :key => "value")}
assert_raise(ArgumentError) {sprintf("%<key><key2>s", :key => "value")}
assert_equal("value", sprintf("%{key}", :key => "value"))
assert_raise(ArgumentError) {sprintf("%1${key2}", :key => "value")}
assert_equal("value{key2}", sprintf("%{key}{key2}", :key => "value"))
end
end