The _______ keyword in Go is used to check if a key exists in a map.
- _, exists := myMap[key]
- _, exists = myMap[key]
- exists := myMap[key]
- exists = myMap[key]
The _ is a blank identifier used to discard values in Go. When used in conjunction with map lookup, it discards the value but captures whether the key exists or not in the map.
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