Re: Function overloading between modules

[bauss via Digitalmars-d-learn]

On Thursday, 22 February 2018 at 21:12:45 UTC, JN wrote:

Is this expected behaviour?

bar.d
---
void foo(string s)
{
}


app.d
---

import std.stdio;
import bar;

void foo(int x)
{
}

void main()
{
  foo("hi");
};


===
Error: function app.foo (int x) is not callable using argument 
types (string)


https://dlang.org/articles/hijack.html

Re: Function overloading between modules

[ketmar via Digitalmars-d-learn]

JN wrote:


same idea?


absolutely the same. non-qualified imports (be it template, or function) 
won't take part in overload resoultion.

Re: Function overloading between modules

[JN via Digitalmars-d-learn]

On Thursday, 22 February 2018 at 21:19:12 UTC, ketmar wrote:


yes. this is done so unqualified won't silently "steal" your 
functions. this can cause some unexpected (and hard to find) 
bugs.


if you want it to work, you can either do qualified import

import bar : foo;

or manuall bring overloads from `bar` with

alias foo = bar.foo;


I see, how about this one:

bar.d
---
void foo(T)(T t)
{
}
app.d
---
import std.stdio;
import bar;
void foo(T : string)(T t)
{
}
void main()
{
   foo(123);
};

same idea?

Re: Function overloading between modules

[ketmar via Digitalmars-d-learn]

JN wrote:


Is this expected behaviour?

bar.d
---
void foo(string s)
{
}


app.d
---

import std.stdio;
import bar;

void foo(int x)
{
}

void main()
{
   foo("hi");
};


===
Error: function app.foo (int x) is not callable using argument types 
(string)


yes. this is done so unqualified won't silently "steal" your functions. 
this can cause some unexpected (and hard to find) bugs.


if you want it to work, you can either do qualified import

import bar : foo;

or manuall bring overloads from `bar` with

alias foo = bar.foo;

Function overloading between modules

[JN via Digitalmars-d-learn]

Is this expected behaviour?

bar.d
---
void foo(string s)
{
}


app.d
---

import std.stdio;
import bar;

void foo(int x)
{
}

void main()
{
  foo("hi");
};


===
Error: function app.foo (int x) is not callable using argument 
types (string)