calc VS rofi-calc

http://www.isthe.com/chongo/tech/comp/calc/index.html not sure why you chose exactly the same name as the original calc. Even if you plan to create a drop in replacement. It's not good practise to use exactly the same name than another active project in the same problem domain

my benchmarks againts qalc and c-calc shows that c-calc takes about 0.8ms mean to run a calculation,qalc takes about 96.4ms to run a calculation,and mine takes 0.5ms to run a calculation, of course this is pretty much just the startup time however i cant measure the runtime speed againts c-calc because it does not allow multiple arguments like mine does.

I like calc myself, works quite well. Doesn't have e preloaded as a constant, to my knowledge at least, but otherwise it is very good.

calc: a command line calculator with arbitrary precision. GNU bc is good too, but calc has more built-in commands (combinatorial, number theory functions for example). You can use it interactively, or simply to provide the results of a calculation. Try this: in your terminal, enter

There's also another calc: https://github.com/lcn2/calc

https://github.com/svenstaro/rofi-calc together with https://github.com/lbonn/rofi (both packaged for openSUSE and perhaps other Linux distros).

calculator

I would assume that they just mean rofi which is an app launcher that can be configured to do a lot more than just that. It can work as an emoji picker, calculator, and other general menus

I found this tool https://github.com/svenstaro/rofi-calc which add live calculation in rofi, but i cannot get it to work. Could anyone help?

Do you use rofi? Have you looked at rofi-calc? While it doesn't have a blocks widget, if you're not comfortable with a key binding and you're using a block bar that supports mouse click modules (like i3status-rust, or others) you can add a block that spawns rofi-calc on click.