Interesting Operators

[Tendon]

I was scrolling through this page: http://docs.garagegames.com/torque-3d/official/content/documentation/Scripting/Overview/Syntax.html
and I found some interesting things.

Instead of something like

Code: [Select]

if(%admin)
{
%powerful = "yes";
}
else
{
%powerful = "not at all";
}
Or even

Code: [Select]

switch(%admin)
{
case 1:
%powerful = "yes";
case 0:
%powerful = "nopenopenope";
}
I can just use

Code: [Select]

%powerful = %admin ? "yes" : "nope";If admin is 1, powerful is "yes". If admin is 0, powerful is "no".

I did not know of this.

I also learned that % can be used to find the remainder of an division operation.
So like.  34 goes into 40 once, with a remainder of 6.
So echo(40 % 34); returns 6.
40 % 22 returns 18.
40 % 18 returns 4.  Cause 18 goes into 40 2 times, with a remainder of 4.

Of equal interest, though I didn't learn it from that particular page, I learned that-
instead of using %a++;  or %a = %a + 1; to increment %a by 1.
I can use %a += 1;  or if i want to increment it by five I can use %a += 5;
Similarly I can use all of the normal operators to do stuff like this-
if %a = 6 then:
%a += 5; sets %a to 11
%a -= 2; sets %a to 4
%a /= 3; sets %a to 2
%a *= 2; sets %a to 12
%a %= 5; sets %a to 1

Interesting stuff.  I hope it's useful to someone other than me.

[Ad Bot]

[Honno]

I also learned that % can be used to find the remainder of an division operation.

Yep, % is the modulus operator, in some cases.

[jes00]

Something else you might find interesting with switches. You can use an or operator like so:

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switch$(%food)
{
    case "trout" or "cod" or "bass":
        %type = "fish";

    case "apple" or "banana":
        %type = "fruit";

    case "Cheese":
        %type = "dairy";

    default:
        %type = "unknown";
}
And

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switch(%number)
{
    case 0:
        %result = false;

    case 1 or 2:
        %result = true;
}
Are both valid.

[Tendon]

Oh that's cool!  I didn't know that.  Are there any other operators other than or?

[Greek2me]

Oh that's cool!  I didn't know that.  Are there any other operators other than or?

See section A1 of this reference: http://greekmods.webs.com/docs/Appendix%20A%20-%20Quick%20References.pdf

[portify]

Of equal interest, though I didn't learn it from that particular page, I learned that-
instead of using %a++;  or %a = %a + 1; to increment %a by 1.
I can use %a += 1;  or if i want to increment it by five I can use %a += 5;
Similarly I can use all of the normal operators to do stuff like this-
if %a = 6 then:
%a += 5; sets %a to 11
%a -= 2; sets %a to 4
%a /= 3; sets %a to 2
%a *= 2; sets %a to 6
%a %= 5; sets %a to 1

In reality, these compile to the normal, straight forward method; %a++ turns into %a = %a + 1, so don't go thinking of it as a performance-wise optimization. It's purely appearance.

[jes00]

See section A1 of this reference: http://greekmods.webs.com/docs/Appendix%20A%20-%20Quick%20References.pdf

Multi-line comments don't work.

[Ipquarx]

Multi-line comments don't work.

They did in original TGE, but for some reason badspot removed them...

[elm]

Yes young padawan, we call those ternary operators.

[otto-san]

Something else you might find interesting with switches. You can use an or operator like so:

i saw an or operator at some point and i never played around with it that's super-useful

[Tendon]

[boodals 2]

The operators posted in OP are the same in most languages. Its rare not to have things like +=, %, and ? : in a language.

Code: [Select]

switch(%number)
{
    case 0:
        %result = false;

    case 1 or 2:
        %result = true;
}


I did not know about this though, there's been times where i had to change from a switch statement to if elseif elseif etc statements because i wanted ors. This will be so loving useful.

[Headcrab Zombie]

Its rare not to have things like +=, %, and ? : in a language.

The last is implemented in different ways in many languages
For example, both VB.NET and SQL have a function rather than an operator: if(expression,truepart,falsepart)