\..\..\src\phobos\std\experimental\logger\core.d(1784): Error: static variable stdLoggerThreadLogger cannot be read at compile time

I'm trying to use the logger in a static this. It should work or, if it can't, quietly fail(not log anything)... and not break the program.

On Thursday, 3 September 2015 at 23:09:18 UTC, Prudence wrote:
> \..\..\src\phobos\std\experimental\logger\core.d(1784): Error: static variable stdLoggerThreadLogger cannot be read at compile time
>
> I'm trying to use the logger in a static this. It should work or, if it can't, quietly fail(not log anything)... and not break the program.

The error tells you you're trying to use something in a compile-time context that can't be used at compile time. You *should* get errors in that situation. Can you share the offending code?

the sharedLog Logger (aka default logger) will only work after its static this has run.

you could create a new Logger and use this one.

static this() {
    auto tmpLog = new FileLogger("logfile.log");
    tmpLog.log("Hello World");
}

On 9/4/15 4:30 AM, Robert burner Schadek wrote:
> the sharedLog Logger (aka default logger) will only work after its
> static this has run.

D shouldn't have a problem with this. It uses import dependencies to make sure the static ctors are run in dependency order.

-Steve

On Friday, 4 September 2015 at 01:00:24 UTC, Mike Parker wrote:
> On Thursday, 3 September 2015 at 23:09:18 UTC, Prudence wrote:
>> \..\..\src\phobos\std\experimental\logger\core.d(1784): Error: static variable stdLoggerThreadLogger cannot be read at compile time
>>
>> I'm trying to use the logger in a static this. It should work or, if it can't, quietly fail(not log anything)... and not break the program.
>
> The error tells you you're trying to use something in a compile-time context that can't be used at compile time. You *should* get errors in that situation. Can you share the offending code?

Wait, that makes no sense... The error is in phobos... not my code. THAT specifically means that it is a phobos problem, irrespective of what I'm doing.

On Friday, 4 September 2015 at 17:46:11 UTC, Prudence wrote:
> On Friday, 4 September 2015 at 01:00:24 UTC, Mike Parker wrote:
>> On Thursday, 3 September 2015 at 23:09:18 UTC, Prudence wrote:
>>> \..\..\src\phobos\std\experimental\logger\core.d(1784): Error: static variable stdLoggerThreadLogger cannot be read at compile time
>>>
>>> I'm trying to use the logger in a static this. It should work or, if it can't, quietly fail(not log anything)... and not break the program.
>>
>> The error tells you you're trying to use something in a compile-time context that can't be used at compile time. You *should* get errors in that situation. Can you share the offending code?
>
> Wait, that makes no sense... The error is in phobos... not my code. THAT specifically means that it is a phobos problem, irrespective of what I'm doing.

Is the above the _entire_ error message? For a simple test program, I get the following:

    int sayHello() {
        import std.stdio;
        writeln("Hello!");
        return 42;
    }

    enum value = sayHello();    // line 7


    /home/marc/d/phobos/std/stdio.d(3012): Error: static variable stdout cannot be read at compile time
    /home/marc/d/phobos/std/stdio.d(3076):        called from here: trustedStdout()
    xx.d(3):        called from here: writeln("Hello!")
    xx.d(7):        called from here: sayHello()

Notice the lines saying "called from here". They will point you to the place where the compile-time evaluation is started.