Or even ``` infix fun String `in` obj Any Boolean return obj kotlinlang #javascript

Or even ``` infix fun String.`in`(obj: Any): Boole...

gildor

01/16/2018, 5:07 AM

Or even

Copy code

infix fun String.`in`(obj: Any): Boolean {
    return obj.asDynamic().hasOwnProperty(this) == true
}
// "ontouchstart" `in` window

but I like first option more

Filipp Riabchun

01/16/2018, 10:58 AM

note that

prop in obj

and

obj.hasOwnPRoperty(prop)

aren't the same things in JS

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