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refactor comments on IsPermanent

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Xiang Li 2013-11-08 13:37:30 -08:00
parent 5a4e764d7a
commit acd940a450
1 changed files with 3 additions and 0 deletions
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3
store/node.go
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@ -84,6 +84,9 @@ func (n *Node) IsHidden() bool {
// IsPermanent function checks if the node is a permanent one.
func (n *Node) IsPermanent() bool {
// we use a uninitialized time.Time to indicate the node is a
// permanent one.
// the uninitialized time.Time should equal zero.
return n.ExpireTime.IsZero()
}