• mw (32/32) Jun 20 2020 put the code from:
• mw (2/2) Jun 20 2020 the function defined in unittest become a delegate? how to
• Adam D. Ruppe (2/4) Jun 20 2020 just add the keyword static to the functions
• mw (10/14) Jun 20 2020 https://github.com/mingwugmail/dlang_tour/blob/master/spawn_in_unittest....
• mw (4/19) Jun 20 2020 oh, need to add static to all the function the spawned function

mw <mingwu gmail.com> writes:

put the code from:

https://tour.dlang.org/tour/en/multithreading/synchronization-sharing

in file, and put unittest block from safePrint() to main()

as here:

https://github.com/mingwugmail/dlang_tour/blob/master/spawn_in_unittest.d#L33

-----------------
$ dmd -unittest spawn_in_unittest.d
spawn_in_unittest.d(87): Error: template std.concurrency.spawn 
cannot deduce function from argument types !()(void 
delegate(shared(SafeQueue!int) queue, shared(int)* queueCounter) 
 system, shared(SafeQueue!int), shared(int)*), candidates are:
/usr/include/dmd/phobos/std/concurrency.d(460):        spawn(F, 
T...)(F fn, T args)
   with F = void delegate(shared(SafeQueue!int), shared(int)*) 
 system,
        T = (shared(SafeQueue!int), shared(int)*)
   must satisfy the following constraint:
        isSpawnable!(F, T)
spawn_in_unittest.d(88): Error: template std.concurrency.spawn 
cannot deduce function from argument types !()(void delegate(Tid 
owner, shared(SafeQueue!int) queue, shared(int)* queueCounter) 
 system, Tid, shared(SafeQueue!int), shared(int)*), candidates 
are:
/usr/include/dmd/phobos/std/concurrency.d(460):        spawn(F, 
T...)(F fn, T args)
   with F = void delegate(Tid, shared(SafeQueue!int), 
shared(int)*)  system,
        T = (Tid, shared(SafeQueue!int), shared(int)*)
   must satisfy the following constraint:
        isSpawnable!(F, T)
-----------------

spawn in unitest: why this compiler error? confusing message

mw <mingwu gmail.com> writes:

the function defined in unittest become a delegate? how to 
work-around this?

Adam D. Ruppe <destructionator gmail.com> writes:

On Saturday, 20 June 2020 at 17:43:42 UTC, mw wrote:
 the function defined in unittest become a delegate? how to 
 work-around this?

just add the keyword static to the functions

mw <mingwu gmail.com> writes:

On Saturday, 20 June 2020 at 18:01:51 UTC, Adam D. Ruppe wrote:
 On Saturday, 20 June 2020 at 17:43:42 UTC, mw wrote:
 the function defined in unittest become a delegate? how to 
 work-around this?

 just add the keyword static to the functions

https://github.com/mingwugmail/dlang_tour/blob/master/spawn_in_unittest.d#L50

Tried, still doesn't work:

$ dmd -unittest spawn_in_unittest.d
spawn_in_unittest.d(57): Error: static function 
spawn_in_unittest.__unittest_L33_C1.threadProducer cannot access 
frame of function spawn_in_unittest.__unittest_L33_C1
spawn_in_unittest.d(74): Error: static function 
spawn_in_unittest.__unittest_L33_C1.threadConsumer cannot access 
frame of function spawn_in_unittest.__unittest_L33_C1

mw <mingwu gmail.com> writes:

On Saturday, 20 June 2020 at 18:08:06 UTC, mw wrote:
 On Saturday, 20 June 2020 at 18:01:51 UTC, Adam D. Ruppe wrote:
 On Saturday, 20 June 2020 at 17:43:42 UTC, mw wrote:
 the function defined in unittest become a delegate? how to 
 work-around this?

 just add the keyword static to the functions

 https://github.com/mingwugmail/dlang_tour/blob/master/spawn_in_unittest.d#L50

 Tried, still doesn't work:

 $ dmd -unittest spawn_in_unittest.d
 spawn_in_unittest.d(57): Error: static function 
 spawn_in_unittest.__unittest_L33_C1.threadProducer cannot 
 access frame of function spawn_in_unittest.__unittest_L33_C1
 spawn_in_unittest.d(74): Error: static function 
 spawn_in_unittest.__unittest_L33_C1.threadConsumer cannot 
 access frame of function spawn_in_unittest.__unittest_L33_C1

oh, need to add static to all the function the spawned function 
calls.

static void safePrint(T...)(T args)