diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sprintf.c | 9 | ||||
| -rw-r--r-- | test/ruby/test_sprintf.rb | 3 |
3 files changed, 17 insertions, 0 deletions
@@ -1,3 +1,8 @@ +Wed Jul 21 15:15:02 2010 NARUSE, Yui <naruse@ruby-lang.org> + + * sprintf.c: add short documentation about named reference. + [ruby-core:31294] + Wed Jul 21 15:00:19 2010 Nobuyoshi Nakada <nobu@ruby-lang.org> * parse.y (local_push_gen): disable unused variable warnings in @@ -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 ${name} style doesn't. + * + * Exapmles: + * sprintf("%<foo>d : %<bar>f" % { :foo => 1, :bar => 2 }) + * #=> 1 : 2.000000 + * sprintf("%d %{foo}" % { :foo => 'bar' }) + * # => "%d bar" */ VALUE diff --git a/test/ruby/test_sprintf.rb b/test/ruby/test_sprintf.rb index 05bccde066..96a1b62bb7 100644 --- a/test/ruby/test_sprintf.rb +++ b/test/ruby/test_sprintf.rb @@ -294,5 +294,8 @@ class TestSprintf < Test::Unit::TestCase assert_equal("value", sprintf("%<key>s", :key => "value")) assert_raise(ArgumentError) {sprintf("%1$<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 |