```if batches containsKey key batches key = emptyValue batch kotlinlang #getting-started

```if (!batches.containsKey(key)) { batches[key]...

johnfn

01/11/2020, 11:50 PM

Copy code

if (!batches.containsKey(key)) {
  batches[key] = emptyValue;
}

batches[key].add(entity);

johnfn

01/11/2020, 11:52 PM

oh i see

johnfn

01/11/2020, 11:52 PM

thanks

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