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

# random

[Colton Idle]

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

[Youssef Shoaib [MOD]]

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?

[Chris Lee]

often do require or check to handle verification conditions.

[Szymon Chaber]

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

[Chris Lee]

it’s technically ‘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.

[Colton Idle]

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

[Chris Lee]

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