Incorrect array deletion

Just like javascript, Solidity has push() and pop() functions that either add to an array or remove from it.

Let's imagine the array: array = [1,2,3,4]

At index 0, the element upon initialization is 1. This means that if we use the delete keyword, it should be 2, right?

delete array[1] - This can be a big pitfall, as this operation does nothing more than set the element at the specified index (in this case 1) to 0. If that is the intended result, it would be better for it to be replaced with array[1] = 0 for clarity.

Preventative measuresDo not use the delete keyword as means to remove some element from an array. Instead, use the array.pop(`<index>`) function, which just like in javascript, removes the element at the specified index.

PreviousImproper Array Deletion NextIncorrect interface

Last updated 2 years ago

Incorrect array deletion

Just like javascript, Solidity has push() and pop() functions that either add to an array or remove from it.

Let's imagine the array: array = [1,2,3,4]

At index 0, the element upon initialization is 1. This means that if we use the delete keyword, it should be 2, right?

Preventative measuresDo not use the delete keyword as means to remove some element from an array. Instead, use the array.pop(`<index>`) function, which just like in javascript, removes the element at the specified index.

PreviousImproper Array Deletion NextIncorrect interface

Last updated 2 years ago

Preventative measuresDo not use the delete keyword as means to remove some element from an array. Instead, use the array.pop(<index>) function, which just like in javascript, removes the element at the specified index.

Preventative measuresDo not use the delete keyword as means to remove some element from an array. Instead, use the array.pop(<index>) function, which just like in javascript, removes the element at the specified index.

Preventative measuresDo not use the delete keyword as means to remove some element from an array. Instead, use the array.pop(`<index>`) function, which just like in javascript, removes the element at the specified index.

Preventative measuresDo not use the delete keyword as means to remove some element from an array. Instead, use the array.pop(`<index>`) function, which just like in javascript, removes the element at the specified index.