#calculator #shell #printf #println #command #language #macro

bin+lib fmtcalc

A calculator that can be used like the println! macro of the Rust language

1 unstable release

0.1.0 Jun 30, 2020

#10 in #printf

MIT license

13KB
276 lines

fmtcalc

Actions Status Crate license

This is a simple calculator written in Rust.
It is an alternative to printf for shell command.

Examples

$ fmtcalc 4+2
6

$ fmtcalc "1+2*3 = {}" "1+2*3"
1+2*3 = 7

$ fmtcalc "0xFF - 654.321"
-399.321

$ fmtcalc "3²+4²={}, 5²={}" "3*3+4*4" "5*5"
 +4² =25, 5² =25

For better ergonomics I often abbreviate fmtcalc as println in your shell startup files:

alias println='fmtcalc'

Installation

$ cargo install fmtcalc

License

MIT


lib.rs:

fmtcalc

This is a simple calculator written in Rust.
It is an alternative to printf for shell command.

Examples

$ fmtcalc 4+2
6

$ fmtcalc "1+2*3 = {}" "1+2*3"
1+2*3 = 7

$ fmtcalc "0xFF - 654.321"
-399.321

$ fmtcalc "3²+4²={}, 5²={}" "3*3+4*4" "5*5"
 +4² =25, 5² =25

For better ergonomics I often abbreviate fmtcalc as println in your shell startup files:

alias println='fmtcalc'

Dependencies

~2.7–4.5MB
~81K SLoC