5 Useful Swift One-Liners To Write Concise Code

Learn a bunch of one-liners to improve code readability

Photo by Maxwell Nelson on Unsplash.

1. One-Liner If-Else Operator

Did you know that you can replace this simple if-else statement:

With this neat little one-liner expression?

money > 0 ? print("Some money") : print("No money")

This is actually known as a ternary conditional operator in Swift (it’s a common feature in other programming languages too).

Here is the general structure of a ternary conditional:

condition ? true_expression : false_expression

Be mindful when using this, though. This shorthand is a useful way to replace simple if-else statements. However, it’s not wise to make the code less readable by overusing it.

2. Swap Two Variables Without a Helper

In order to swap two variables without a helper variable, you can utilize tuple destructuring: