From: Andrew Gerrand <adg@golang.org>
Date: Fri, 1 Oct 2010 04:04:55 +0000 (+1000)
Subject: fmt: add Errorf helper function
X-Git-Tag: weekly.2010-10-13~78
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=558477eeb16aa81bc8bd7776c819cb98f96fc5c1;p=gostls13.git

fmt: add Errorf helper function

This crops up in a lot of places.
It's just a one-liner, but doesn't add any dependancies.
Seems worth it.

R=r, r2
CC=golang-dev
https://golang.org/cl/2344041
---

diff --git a/src/pkg/fmt/print.go b/src/pkg/fmt/print.go
index 8fcde73fe2..0f3dd44bf0 100644
--- a/src/pkg/fmt/print.go
+++ b/src/pkg/fmt/print.go
@@ -159,6 +159,12 @@ func Sprintf(format string, a ...interface{}) string {
 	return s
 }
 
+// Errorf formats according to a format specifier and returns the string 
+// converted to an os.ErrorString, which satisfies the os.Error interface.
+func Errorf(format string, a ...interface{}) os.Error {
+	return os.ErrorString(Sprintf(format, a...))
+}
+
 // These routines do not take a format string
 
 // Fprint formats using the default formats for its operands and writes to w.