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expvar: document that the Var interface's String method should return a valid JSON value.

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Change-Id: If4e740f3dbef4053355542eebdd899b3099d872c
Reviewed-on: https://go-review.googlesource.com/21525
Reviewed-by: Andrew Gerrand <adg@golang.org>
This commit is contained in:
David Symonds 2016-04-05 15:19:27 +10:00
parent 869e576517
commit e8f01e5cae
1 changed files with 1 additions and 0 deletions
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src/expvar/expvar.go
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@ -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
}