Question 1

How to add a custom progress bar with dynamic text in Go using uiprogress?

Accepted Answer

Use the PrependFunc or AppendFunc methods to define custom decorator functions. For instance, in the README example, a function returns step names based on the bar's current progress, allowing tailored displays like 'app: downloading source'.

Question 2

uiprogress vs progressbar for Go: which is better?

Accepted Answer

uiprogress excels in concurrent tracking and dynamic bar addition, making it superior for multi-task CLI tools. In contrast, progressbar might be simpler for single-bar use cases but lacks uiprogress's robust concurrency features and decorator flexibility.

Question 3

How to update progress bars from multiple goroutines safely with uiprogress?

Accepted Answer

Leverage the bar.Incr() method, which is atomic and thread-safe. This allows safe increments from multiple goroutines, as shown in the incr example where 1,000 goroutines update a bar concurrently without synchronization issues.

Question 4

Does uiprogress support showing estimated time remaining (ETA)?

Accepted Answer

Not natively; you must implement a custom decorator function to calculate and display ETA based on elapsed time and progress. This adds complexity compared to libraries with built-in ETA support.

Question 5

How to handle terminal resizing with uiprogress bars?

Accepted Answer

Currently, it does not support auto-resizing; bars maintain fixed widths. For dynamic terminals, manual adjustments or workarounds are needed, as the library's TODO list includes adding window dimension detection.

Question 6

Can I use uiprogress for non-linear progress tracking, like indeterminate tasks?

Accepted Answer

Yes, but it requires custom implementation. Use bar.Set() to manually update progress or decorators to display status without a fixed total, though the library is optimized for linear progress with defined totals.

uiprogress

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