07/03/19

How do you create an empty array in Swift?

Prefer composition over inheritance?

Why prefer composition over inheritance? What trade-offs are there for each approach? When should you choose inheritance over composition?

Safe integer parsing in Ruby?

I have a string, say `'123'`, and I want to convert it to `123`.I know you can simply do `some_string.to_i`, but that converts `'lolipops'` to `0`, which is not the effect I have in mind. I want it... more

06/12/19

Map and Remove nil values in Ruby?

I have a map which either changes a value or sets it to nil. I then want to remove the nil entries from the list. The list doesn't need to be kept.This is what I currently have:<!-- language:... more

05/22/19

In Ruby, how do I skip a loop in a .each loop, similar to 'continue'?

In Ruby, how do I skip a loop in a `.each` loop, similar to `continue` in other languages?

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