A modern programming language that makes developers happier.

kotlinlang

```val instance:OnlyAudioRecorder by lazy (mode = LazyThreadSafetyMode.SYNCHRONIZED){
         OnlyAudioRecorder(h,k)}
// what does by lazy (mode = ...) { ... } mean?  should lazy take a lambda? but (...) {...} is not a lambda```

`lazy` is a method that takes an optional argument (`mode`) and a lambda.

also the default mode is synchronized so it doesn't actually do anything here

<@U345RGQ49> you mean it's actually
```lazy(mode=..., {...})?```

your initial example was a little confusing due to the whitespace after `lazy` -- I'd normally say `lazy(...) { ... }`, but maybe that's irrelevant :man-shrugging:

<@U345RGQ49> weird syntax, I know f({lambda}) could be f { lambda },  I don't know f(x, {lambda}) could be f (x) {lambda}

<@U345RGQ49> f(a) could be f a in other languages, so some time I use f (a)

Ruby does this too, fwiw. anyway you can read more in the <https://kotlinlang.org/docs/reference/lambdas.html#passing-a-lambda-to-the-last-parameter|docs>