Parsing a string from stdin using formattedRead

[Ali Çehreli]

On 12/06/2017 10:47 AM, Mark wrote:

 > string info = readln();
 > formattedRead(info, "%s %s", first_name, last_name);
 >
 > This piece of code works

 > formattedRead(readln(), "%s %s", first_name, last_name);
 >
 > But this raises a compilation error, claiming that formattedRead "cannot
 > deduce function from argument types".

formattedRead takes the first parameter as 'ref'.

I hope we can change compiler error messages like this. What it means is 
that although the 'string' part of the argument matched, it cannot be 
passed as 'ref' because what readln() returns is an rvalue. (On the 
other hand, info above is an lvalue.) rvalues cannot be bound to 
references in D.

Ali