Interprets human redable number range into list of numbers. For example: "1-2" means [1,2], "1,3:5" means [1,3,4,5], and so on.
The number ranges can consist of comma separated list of numbers or ranges.
number⇒ Single number (e.g.3)start:end⇒ Inclusive Range with step 1 (e.g.1:10)start:step:end⇒ Inclusive Range with variable step (e.g.1:2:10)
Example: -10,3:10,14:2:20 => [-10, 3, 4, 5, 6, 7, 8, 9, 10, 14, 16, 18, 20]
It is useful to input a bunch of similar commands by piping the input with different numbers.
with gnu parallel you can run something like: numrng 1-3,7-8 | parallel echo {}
Number range can be passed as CLI args, or can be passed from stdin. For stdin, pass - instead of the number range, it'll wait for stdin and interpret them. You can pass CLI args range as well as wait for stdin.
For example both of the following works
echo "1-3,7-8" | numrng -=>1, 2, 3, 7, 8numrng "1-3,7-8"=>1, 2, 3, 7, 8
Bash can by default do something similar but the syntax is different:
| numrng command | bash equivalent |
|---|---|
numrng 1-5 |
printf "%d\n" {1..5} |
numrng 1:2:50 |
printf "%d\n" {1..50..2} |
numrng 1-5,7-10 |
printf "%d\n" {{1..5},{7..10}} |
Follow the instructions to install rust.
Then with cargo do: cargo build --release. You'll have the compiled binary. Move target/release/numrng to the path.
For Arch Linux, AUR package numrng is available.
_ can be used to separate the numbers without it meaning anything. For example: 1_000_000-1_000_100 will go from 1000000 to 1000100.
For how it works and use in your own program refer to number_range crate for Rust.