Re: How can I check if template variable parameter is iterable before handle it?

[Marcone via Digitalmars-d-learn]

On Sunday, 21 February 2021 at 12:47:46 UTC, Boris Carvajal wrote:
On Sunday, 21 February 2021 at 11:58:11 UTC, Marcone wrote:
import std;
void foo(T)(T bar){
	static if (bar.isiterable()) // Need Somethin to check if bar 
is iterable.
        {
                // Execute it if bar is iterable.
                foreach (i; bar)
                {

                }
        }
        else {
                // Execute it if bar is NOT iterable.
        }

}

void main(){
        foo(1);
        foo([1, 2, 3, 4, 5]);
}

https://dlang.org/library/std/traits/is_iterable.html

import std.traits : isIterable;

void foo(T)(T bar){
    static if (isIterable!T)
    {
...

Thank you.

// Function isiterable()
bool isiterable(T)(T arg) nothrow {try {static if 
(isIterable!T){return true;} else {return false;}} 
catch(Throwable){return false;}}