On Thursday, 3 March 2022 at 12:14:13 UTC, BoQsc wrote:
I need to check if a string contains integers,
and if it contains integers, remove all the regular string
characters.
I've looked around and it seems using regex is the only closest
solution.
```d
import std.stdio;
import std.algorithm : find, filter;
import std.conv : to;
import std.uni : isNumber;
void main(string[] args){
if (args.length > 1){
auto filtered = () {
auto r = args[1].find!isNumber; // check if a string
contains integers
return r.length ?
r.filter!isNumber.to!string // and if it does,
keep only integers
: args[1]; // otherwise keep
original
} ();
filtered.writeln;
} else {
write("Please write an argument.");
}
}
```
