Error: function declaration without return type.

[Ali Çehreli via Digitalmars-d-learn]

On 01/06/2015 01:25 PM, Suliman wrote:> On Tuesday, 6 January 2015 at 
21:19:38 UTC, bearophile wrote:
 >> Suliman:
 >>
 >>>     void foo()
 >>>     {
 >>>     writeln("test");
 >>>     writeln(mystring);
 >>>     }
 >>>     foo();   <<<<<
 >>> }
 >>
 >> I guess you have to remove that line.
 >>
 >> Bye,
 >> bearophile
 >
 > Why? I can't call function in instance of class?

Instances of classes are objects that are created by 'new'. So, yes, you 
can call member functions on instances of classes. There are two 
instances of Test in the following main():

import std.stdio;

class Test
{
     string mystring;

     this(string mystring)
     {
         this.mystring = mystring;
     }

     void foo()
     {
         writeln("test");
         writeln(mystring);
     }
}

void main()
{
     auto a = new Test("hello");
     auto b = new Test("hi");

     a.foo();
     b.foo();
}

Ali