Hi,

What's the meaning of the dot in the call to writeln() below?

    .writeln("Hello there!");

I haven't found this in the spec or anywhere else. This is used very often in the source code for Phobos.

Thanks,
dhs

A leading dot (.) causes the identifier to be looked up in the module scope.

int x;

int foo(int x)
{
    if (y)
        return x;  // returns foo.x, not global x
    else
        return .x; // returns global x
}

Hi,

What's the meaning of the dot in the call to writeln() below?

    .writeln("Hello there!");

I haven't found this in the spec or anywhere else. This is used very often in the source code for Phobos.

Thanks,
dhs

On Sunday, 1 October 2023 at 08:22:48 UTC, dhs wrote:

    .writeln("Hello there!");

Quote https://dlang.org/spec/module.html#module_scope_operators;

int x;

int foo(int x)
{
    if (y)
        return x;  // returns foo.x, not global x
    else
        return .x; // returns global x
}

On Sunday, 1 October 2023 at 08:22:48 UTC, dhs wrote:

    .writeln("Hello there!");

It is either means "use global scope writeln" in cases when there is local writeln in the scope shadowing global one, or simply a chained calls like myarray.filter().sort().map() each on new line.