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kotlinlang

Is it common to want to write an assert statement in a regular method (not a test?)

example: I want to make sure the arg that people pass in is greater than 0

Usually, people use the `require` function (for parameters) or the `ensure` function (for the state of a class). Or you could have a `value class PositiveInt internal constructor(val underlying: Int)` that has a `require` statement in its initializer and a nullable factory function `fun PositiveInt(int: Int): PositiveInt?`

often do `require` or `check` to handle verification conditions.

It's sometimes useful to do. It's related to concepts of defensive programming &amp; fail-fast

it’s technically ‘<https://en.wikipedia.org/wiki/Defensive_programming#Offensive_programming|offensive programming>’, a subset of defensive programming.  defensive would be compensating for the invalid inputs (if string == null string = “”) vs failing fast on invalid inputs.

Ah. require was what i was looking for. Throws IAE. _*chefs kiss*_

yep, `require` is for validating inputs, `check` is for validating state, and `error` can be used for anything else.