JS Swapping trick #javascript #js #devtips

Background music:

[armandopenatamayo]

You can do console.log({a}) instead of what you’re doing to log your variables with a tag

[jerichaux]

While it’s true that this works, if you pulled this in a sufficiently large iterative loop, there’d be a significant and absolutely not inconsequential spike in Garbage Collection induced latency.

Just go with the temp variable.

For example, performing this trick in a standard sorting algorithm implementation, and then using it to sort a sizeably large Array, would absolutely incur a performance hit.

Be mindful of unnecessary Object creation and subsequent garbage collection. Prefer mutation to instantiation when no external holders of an object reference exist.

[sebastianespinosa]

Why not produce new variables instead of flipping the values?, I can't think in a single use case for this.