xor

[mr.peanut 1]

Why is there no XOR in ArmA?! I don't wanna have to ((A AND NOT B) OR (B AND NOT A)) ... Use 5 ops instead of 1 ? I think I'm gonna be sick!

[hardrock 1]

Well, apparently that's the way it currently is ... XOR isn't that widely used anyway.

[raedor 8]

If you need it often, write a function... so you don't have to type that much at least.

[ColonelSandersLite 0]

There's better ways than xor. Always has been and always will be.

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">

if (ConditionA xor ConditionB) then

{

Dostuff

};

Can be easilly achieved like this:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">

Myroutine =

{

DoStuff

};

If (ConditionA) Then

{

if (Not ConditionB) then

{

ExecVM Myroutine[]

};

}

Else

{

if (ConditionB) then

{

ExecVM Myroutine[]

};

};

There's more typing like that, but it's an easier debug than trying to locate that little x (or lack of an x) in a 5000 line script.

[crashdome 1]

Also, just because it is one command doesn't mean it is one operation. You are executing the same number regardless.

[mr.peanut 1]

Urp! Didn't realize it took 5 ops to construct an XOR. For some reason I thought  it was a single binary op.

@CSL: your logic doesn't look quite right to me... Yours looks like a short-circuit <s>AND</s> OR

[ColonelSandersLite 0]

I assure you, it's correct:

If this, do this

Else if that, do that

You can also tack a neither onto there too:

If this, do this

Else if that, do that

Else, do something else

Edit:

A short circut and looks like this:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">

If (ConditionA) Then

{

if (ConditionB) then

{

DoStuff

};

};

Edit again:

You know, I haven't tested if arma's scripting engine is smart enough to automatically short circut compount conditional operators. I tested it in ofp way back when, and it wasn't. Now you got me thinking though...

[mr.peanut 1]

In your XOR snippet the code is executed if A is true regardless of the value of B. How is that XOR?

At second glance, your code is a short circuit OR.

[kegetys 2]

This should work:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">

if({_x}count[A, B] == 1) then {

   // true

} else {

   // false

};

[raedor 8]

This should work:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">

if({_x}count[A, B] == 1) then {

// true

} else {

// false

};

As always...

[mr.peanut 1]

Yet another WTFDITOT(Why The Fork Didn't I Think Of That?) from Keg.

Answer: BITFS(Because I'm Too Forkin Stewpid)

[ColonelSandersLite 0]

In your XOR snippet the code is executed if A is true regardless of the value of B. How is that XOR?

At second glance, your code is a short circuit OR.

Whoops, you're right. Corrected:

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">

Myroutine =

{

DoStuff

};

If (ConditionA) Then

{

if (Not ConditionB) then

{

ExecVM Myroutine[]

};

}

Else

{

if (ConditionB) then

{

ExecVM Myroutine[]

};

};

[hardrock 1]

Which is then exactly the same as

<table border="0" align="center" width="95%" cellpadding="0" cellspacing="0"><tr><td>Code Sample </td></tr><tr><td id="CODE">if((A && !B) || (!A && B)) then

{

execVM ...

}

Thumbs up Keg! Nice solution!