How to access value of map with a key if key was not found in scala? -


assume have 

var mp = map[string,string]()  .....  val n = mp("kk")

the above throw runtime error in case key "kk" did not exist.

i expected n null in case key did not exist. want n null if key did not exist.

what proper way handle situation in scala short code sample?

first of all, don't want null, that's sign of bad coding in scala. want n of type option[string], says value either string or missing. right way .get() method on map

val n = mp.get("kk")

if need null (for interop java libraries, example), can use .getorelse()

val n = mp.getorelse("kk", null)

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