Why is length being tested on an int?

[Shriramana Sharma via Digitalmars-d-learn]

Hello. I want a function to be able to take any arguments like 
write() and print them out but quoting string arguments of length 
more than 1. So I write the following quote:

import std.stdio;
string myFunc(string arg) { return '\"' ~ arg ~ '\"'; }
void myWrite(T ...)(T args)
{
    foreach (arg; args)
        if (is(typeof(arg) == string) && arg.length > 1)
            write(myFunc(arg));
        else
            write(arg);
}
void main() { myWrite("Hello", 1, "c"); }
However I am getting the error even when compiling:

<src>(6): Error: no property 'length' for type 'int'
<src>(7): Error: function <src>.myFunc (string arg) is not 
callable using argument types (int)
<src>(11): Error: template instance <src>.myWrite!(string, int, 
string) error instantiating

I am not sure why, given short circuit evaluation, it is testing 
the length of the int argument? Or is it that the problem is at 
compile time itself so short circuit doesn't come into play?

How to rewrite the function so I don't get the error?

Thanks!