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kotlinlang

Hey guys, I recently started coding on Hackerrank using Kotlin and I switched from Java because it saved me from lot of boilerplate code. But there are few instances which is still same as Java and kind of killed my Kotlin experience.
 - HashMap still doesn’t has update method
 Hence, i want to work on developing update method for MutableMap&lt;K,V&gt;.
Is there anything that I should follow or know before submitting pull request?

You mean the `put` method on a Java Map? This is how you can update any mutable map....

HashMap is mutably in Kotlin. What do you mean?

This should work
```
val myMap = HashMap&lt;String,String&gt;()
myMap.put("key", "value")
```

yes, or 
```
val map = hashMapOf("key" to "value")
map["key"] = "newValue"
```

Exactly... maybe Navi means something else with 'update'... not sure.

I’m really sorry to bring this up. This seems to be my ignorance of basic java. I meant exactly what Andrey have offered and also MutableMaps has replace method that does exactly the same and return Boolean/old value depending upon the overloaded method used.