I used "to" keyword which "std.conv" includes for data conversions, but I think that there are some other ways for data conversions, or maybe there are common ways like casting, I hope to know about. For example, next program are using "to":

// D programming language

import std.stdio;
import std.conv;
import std.string;

int main()
{

char[] s;
int x=0, e;

do{

try{
e=1;
write("Enter a numeric value: ");
readln(s);
s=strip(s);
x=to!int(s);}

catch (Exception err){
stderr.writefln!"Warning! %s"(err.msg);
e=0;}

}while(!e);

writeln("Correct numeric value!");

return 0;

}

On Tuesday, 16 November 2021 at 19:18:50 UTC, pascal111 wrote:

sscanf of C is an option where you cannot use to!T. However, it is a c library function, and it doesn't throw an exception on unexpected inputs.

https://dlang.org/library/core/stdc/stdio/scanf.html
https://www.tutorialspoint.com/c_standard_library/c_function_sscanf.htm

On Tuesday, 16 November 2021 at 19:18:50 UTC, pascal111 wrote:

Strictly speaking it's not a keyword, just a template name.

std.conv is pretty good for conversions like this. You can read about casting at https://dlang.org/spec/expression.html#CastExpression , and I have a quickref for string conversions at https://d.minimaltype.com/index.cgi/wiki?name=string+type+conversions

There's a lot to say about string conversions. Phobos date&time conversions deserve a quickref like that, too. On numerical conversions, D is very similar to other languages. OOP casting is noteworthy in that it can fail with null.

On Tuesday, 16 November 2021 at 19:44:04 UTC, Ferhat Kurtulmuş wrote:

Upps

https://dlang.org/library/core/stdc/stdio/sscanf.html