Advertisements I have a large PHP codebase with many instances of this pattern: $result = $expression? $expression: $alternate; Which I want to replace with: $result = $expression ?: $alternate; Here $expression can be anything like $this->system->cache(‘1234′). It will usually start with $, and usually not have any spaces in it. Those few that don’t start… Read More Regular expression to find repetitions of arbitrary characters

Advertisements I am learning Kotlin from this [1] and at 35:45 he is running this code: [enter image description here][2] I ve tried to run exactly the same code: fun main() { val x = readLine()?:"1" val y = readLine()?:"1" val z = x.toInt() + y.toInt() print(z) } But i get this error: Exception in… Read More Elvis operator doesn't work in Kotlin while the synthax seems correct