expvar: document that the Var interface's String method should return…

… a valid JSON value. Change-Id: If4e740f3dbef4053355542eebdd899b3099d872c Reviewed-on: https://go-review.googlesource.com/21525 Reviewed-by: Andrew Gerrand <[email protected]>
2bt · Apr 5, 2016 · e8f01e5 · e8f01e5
1 parent 869e576
commit e8f01e5
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/expvar/expvar.go b/src/expvar/expvar.go
@@ -38,6 +38,7 @@ import (
 
 // Var is an abstract type for all exported variables.
 type Var interface {
+	// String returns a valid JSON value for the variable.
 	String() string
 }