how do I check if a map contains a certain entry?

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[forcelain]

how do I check if a map contains a certain entry?

[Czar]

Same as in java. yourMap.containsKey("someKey")
By value you have to check all the values, e.g.
yourMap.find { it.value == yourValue } != null

[karelpeeters]

I'd do key in map and value in map.values.

[karelpeeters]

I was about to say the performance of map.values can be bad, but HashMap caches the result (and it even updates with the map), so it should be fine.

[forcelain]

thanks

[forcelain]

@karelpeeters but what if the map contains both key and value and at the same time the target value is stored by some another key?

[karelpeeters]

Ah you're asking whether a map contains a given entry, I think we all read over that 🙂.

[karelpeeters]

What is wrong with map[key] == value then?

[forcelain]

well, looks like nothing is wrong, haha

[forcelain]

thanks 🙂