Easy progress reporting for D inspired by Python's one with the same name.
There are 6 progress bar, 4 spinner, 4 counter, and... Dman.

• Bar
• ChargingBar
• FillingSquaresBar
• FillingCirclesBar
• IncrementalBat
• ShadyBar

• Spinner
• PieSpinner
• MoonSpinner
• LineSpinner

• Counter
• Countdown
• Stack
• Pie

• DmanSpinner

Call next to advance and finish to finish.

Bar b = new Bar();
b.message = {return "Processing";};
b.max = 20;
foreach(i; 0 .. 20)
{
    //Do some work
    b.next();
}
b.finish();

Processing |##################              | 12/20

In the general case, you can use the iter method to write simply

import std.range : iter;

Bar b = new Bar();
foreach(i; b.iter(iota(20)) )
{
    //Do something
}

Progress bars are very customizable, you can change their width, their fill character, their suffix and more.

import std.conv : to;

b.message = {return "Loading";};
b.fill = '@';
b.suffix = {return b.percent.to!string ~ "%";};

This will produce a bar like the following:

Loading |@@@@@@@                         | 24%

There are various properties that can be used in message and suffix.

Instead of passing all configuration options on instatiation, you can create your custom subclass:

class CustomBar : Bar
{
    this()
    {
        super();
        bar_prefix = "/";
        bar_suffix = "/";
        empty_fill = " ";
        fill = "/";
        suffix = {return "Custom";};
    }

You can also override any of the arguments or create your own:

class SlowBar : Bar
{
    this()
    {
        super();
        suffix = {return this.remaining_hours.to!string ~ "hours remaining";};
    }
    @property long remaining_hours()
    {
        return this.eta.total!"hours";
    }
}

For actions with an unknown number of steps you can use a spinner:

import progress.spinner;

auto s = new Spinner();
s.message = {return "Loading";};
while (finished != true)
{
    //Do something
    s.next();
}

Counters can be used like progress bar.
However, Counter is the same as spinners, and has no properties that require maximum value.

Same as spinners. it's very big.

Please see example projects and source if you want to learn more.