create range numbers in rust
add dependency
sh
cargo add grange
or
toml
grange = "0.1.0"
example
```rs use grange::*;
fn main() {
for i in range!(1,,2,,=20){ // equal to (1..=20).stepby(2)
println!("{}", i);
}
for i in range!(10,,-1,,=1){ // equal to (1..=10).rev()
println!("{}", i);
}
for i in range!(10,,-2,,=1){
println!("{}", i);
}
for i in range!(,,3,,10){ // equal to (0..10).stepby(3)
println!("{}", i);
}
for i in range!("10..1"){
println!("{}", i);
}
}
```