Commitbcccab1

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panic when accessing map elements before initializing

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Original file line number	Diff line number	Diff line change
`@@ -198,6 +198,10 @@ func (m ConcurrentMap) Clear() {`
`198`	`198`	`// It returns once the size of each buffered channel is determined,`
`199`	`199`	`// before all the channels are populated using goroutines.`
`200`	`200`	`funcsnapshot(mConcurrentMap) (chans []chanTuple) {`
	`201`	`+//When you access map items before initializing.`
	`202`	`+iflen(m)==0{`
	`203`	+panic(`cmap.ConcurrentMap is not initialized. Should run New() before usage.`)
	`204`	`+}`
`201`	`205`	`chans=make([]chanTuple,SHARD_COUNT)`
`202`	`206`	`wg:= sync.WaitGroup{}`
`203`	`207`	`wg.Add(SHARD_COUNT)`

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