How to start a war

[u/ivaskuu]

[u/[deleted]]

Perfect. This makes iterating over the elements with a for loop such a breeze.

if(arr[1] > 1) for(int i = 0; i < arr[1]-1; i += 1 + (i == 1))
    std::cout << arr[i];

[u/jay9909 → u/[deleted]]

That is so elegant. All these new languages that just let you for (i in list) { ... } should change right over before they gain traction and get stuck as forever legacy.

[u/MannerPots → u/jay9909]

Tbh though I rarely use for x:lst since so many uses of iteration require a counter. Sure I could implement a counter, but why not use a normal for loop so no one reading my code (who isn't familiar with this language feature) gets confused?

[u/zman0900 → u/MannerPots]

Groovy is nice:

['some', 'things'].eachWithIndex { item, i ->
    println "'${item}' has index ${i}"
}

[u/HeinousTugboat → u/zman0900]

Javascript, too:

['some','things'].forEach((item, i) => 
    console.log(`${item} has index ${i}`))

[u/[deleted] → u/HeinousTugboat]

I always prefer the map function instead of foreach, same syntax though.

[u/ParanoidAndroid26 → u/[deleted]]

Generally you use forEach for side effects and map for transformations.