On Saturday, 16 February 2013 at 17:03:30 UTC, Gopan wrote:
On Thursday, 14 February 2013 at 16:57:17 UTC, Andrea Fontana
wrote:
Maybe you can write 2 different callbacks, one with if, one
without and switch between them.
I like that idea. But it is less elegant. For example, for a
timer callback, I may have to restart the timer with a new
callback function. Instead of a single callback, if it is a
event subscription, other subscribers will be affected.
Maybe with a compile-time code generation to avoid code
repetitions...
I am looking for a more generic solution. It should work with
within a loop also. Just for the sake of achieving it I will
have to put those statements in a function, call it with
function pointer, etc.
while(true)
{
...
Statement_1;
if(i == MY_MAGIC_NUMBER)
{
//done with this.
}
Statement_3;
...
}
Just for a int comparison or is it a different long operation?
:) you will ask me to short cut with a simple condition.
Thanks,
Gopan
for a loop:
while(true)
{
Statement_1;
if(magic)
{
//do something with magic
Statement_2;
break;
}
Statement_2;
}
while(true)
{
Statement_1;
Statement_2;
}
Simple (assuming that the break in the if statement is the only
way out of the loop).
The code repetition can be easily removed by making Statement_1
and Statement_2 mixins.
Remember that D is a compiled language, you can't change the
instructions at runtime so there is no way to edit out the if
statement at a runtime-dependant time. You have to specify a
whole new code path to follow (i.e. the second while loop).
