BoolExpr

[chovynz]

I've been warned off boolexprs. I don't know why. Anyone want to explain?
What are they and why are they bad? What can we use instead of them? Does it matter that much or is it a good issue to fix?

 

[denmax]

I don't know what the heck is that... Is that a person, a program, a group, a method of I have no knowledge, etc? And you posted it in WE Help Zone so thats why im asking these questions..

 

[Chocobo]

boolexpr = Boolean Expression

used mainly for groups or conditions.

Leaks in some cases.

ex :

local group g = GetUnitsInRangeOfLocMatching(0,<offset>,Condition(function somefunc))

It creates a boolexpr based on "somefunc" (must return a boolean).

There it leaks, because it creates a boolexpr.

local boolexpr b=Condition(function somefunc)
local group g = GetUnitsInRangeOfLocMatching(0,<Offset>,b)

There it won't leak, but you will have to clean the boolexpr variable :

call DestroyBoolExpr(b)

If you don't understand the conditionfunc to boolexpr, go there.

 

[IKilledKEnny]

BoolExprs are handles (I think, might just be treated like a handle) thus we need to destroy them like destroying other leaking handles.

set boolexpr b=Condition(function my_function_name)
// use it
call DestroyBoolExpr(b)
set b=null

 

[Vexorian]

Never destroy a boolexpr created by Condition
- It doesn't leak.
- It might cause issues if you remove it.

 

[phyrex1an]

Interesting. Out of curiosity, does the same thing apply to Filter?

 

[waaaks!]

I don't know what the heck is that... Is that a person, a program, a group, a method of I have no knowledge, etc? And you posted it in WE Help Zone so thats why im asking these questions..

it's a JASS variable...

 

[PurgeandFire]

it's a JASS variable...

Variable type to be more specific...

 

[waaaks!]

lol

 

[Tom Jones]

Variable type to be more specific...

Handle to be excact.

 

[Vexorian]

Interesting. Out of curiosity, does the same thing apply to Filter?

It should, although there's no actual reason to use Filter over Condition, is it?

 

[chovynz]

Thanks all for your answers! Carry on.

 

[phyrex1an]

It should, although there's no actual reason to use Filter over Condition, is it?

It's still interesting to know. I guess you are right, there is no reason why filter should behave differently.