From 6e2850aa46b25d2f76fdd60c7466060f73994a85 Mon Sep 17 00:00:00 2001 From: naruse Date: Wed, 21 Jul 2010 06:16:07 +0000 Subject: * sprintf.c: add short documentation about named reference. [ruby-core:31294] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28702 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- sprintf.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'sprintf.c') diff --git a/sprintf.c b/sprintf.c index 8a83cb3446..4f3b51701e 100644 --- a/sprintf.c +++ b/sprintf.c @@ -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. + * %s style uses format style, but ${name} style doesn't. + * + * Exapmles: + * sprintf("%d : %f" % { :foo => 1, :bar => 2 }) + * #=> 1 : 2.000000 + * sprintf("%d %{foo}" % { :foo => 'bar' }) + * # => "%d bar" */ VALUE -- cgit v1.2.3