Re: "Usability" (was Re: Map iteration and modification)

[Lawrence D'Oliveiro <ldo@nz.invalid>]

On Sat, 6 Jan 2024 21:21:30 -0400, J-P. Rosen wrote:

> Yes, I'm always surprised to see many languages (including Rust)
> praising themselves of being "concise". Apart from saving some
> keystrokes, I fail to see the benefit of being concise...

How about this for an example. I created a Python wrapper around the Cairo 
graphics library <https://www.cairographics.org/>. There are already other 
Python wrappers, which are little more than transliterations of the C API. 
I wanted to go one step further. So whereas in C you might write

    x1 = - scope_radius * sin(trace_width_angle);
    y1 = scope_radius * cos(trace_width_angle);
    cairo_line_to(ctx, x1, y1);

my Python wrapper reduces this down to

    ctx.line_to(Vector(0, scope_radius).rotate(trace_width_angle))

How’s that for “concise”?