memcache.go
func (c *Client) Increment(key string, delta uint64) (newValue uint64, err error) {
	return c.incrDecr(cmdIncr, key, delta)
}
func (c *Client) Increment(key string, delta uint64) (newValue uint64, err error) {
	return c.incrDecr(cmdIncr, key, delta)
}
func ( c * Client ) Increment ( key string , delta uint64 ) ( newValue uint64 , err error ) { return c . incrDecr ( cmdIncr , key , delta ) }
// Increment atomically increments key by delta. The return value is
// the new value after being incremented or an error. If the value
// didn't exist in memcached the error is ErrCacheMiss. The value in
// memcached must be an decimal number, or an error will be returned.
// On 64-bit overflow, the new value wraps around.
Increment atomically increments key by delta . The return value is the new value after being incremented or an error . If the value didn t exist in memcached the error is ErrCacheMiss . The value in memcached must be an decimal number or an error will be returned . On 64 - bit overflow the new value wraps around .