Progress Bar Updater

Updating a progress bar is fairly simple in conceptual terms, but it always takes a slightly different bit of code to do it right:

• What if the sequence is backwards?
• What if you're incrementing in units of 2, or 3, or 10?
• How big is the progress jump?

It makes sense to abstract the process and stick it in a struct. The progressBarUpdater does just that, and really is as simple as:

1. Create a struct instance
2. Initialize it with a reference to a progress bar, and the known start and end values of the calculation
3. Call update() for each loop iteration.

In code, starting with a 2-line initialization, it looks like this:

pbu = progressBarUpdater()
pbu.init pb1 startValue endValue

And to update the progress bar, this is the only command you need to place in the loop:

pbu.update()

The pbUpdater struct already knows everything it needs to know, so it's just one call.

Download

Download progressBarUpdater.ms.