[Resolved]Catch & Throw (Help out a Newb)

[SephirothSpawn]

Ok. My Turn. This is about Catch and throw. I have yet to see it actually used in a script, but I have tried reading to understand this concept, but to no avail, I am drawing nil. More or less, I am bored and just wonder what it is and what it could be used for.

Thanks,
The Newb

 

[Nava]

wow i didnt think i would ever see you ask for help, i was told that you were the best scripter on the site but who knowsss... lol but hey if i could help you i would ill look into it

 

[SephirothSpawn]

lol

I have an idea what it is, but it still just kinda confuses me somewhere between seeing what it does actually comprehending it.

I don't know if I will ever use it, but it's just something I have wanted to know.

 

[Selwyn]

I don't really know how to explain it, but you can look at the following code, it may help you.

i = 0
array = []
catch :test do
  loop do
    i += 1
    throw :test unless i < 5
    array.push(i)
  end
end

p i, array # 5, [1, 2, 3, 4]

actually if the condition is met it goes back the the catch and end the loop

 

[Despain v.1]

Catch & Throw (Help out a...

I swear to god I thought that would say "Help out a nigga."

 

[SephirothSpawn]

@Squall: Yeah, that's about as far as I got. I am guessing that the catch syntax starts a block, and basically continues until a condition is met.

But I just want to know, why not use a until loop?



@The Despain: :lol:

By the way, nice Signature

 

[Selwyn]

yes but with a catch and a throw, everything after the throw will not be done.

you can see that i is 5 and that 5 hasn't been added to the array.

 

[Near Fantastica]

Howdy,

I think of Catch Throw as jump instruction found in other lower lever PLs. In many cases what you’re after can be done in a cleaner more stylish way and I have yet never had a need for it. If you still confused compare it to the jump to label in RMXP although not at all logically them same the function is about the same. You start here, hit a jump, jump to there, and continue. I would not worry too much about it. There are more interesting things like “Proc” objects that confuses the willies out of just about everyone….

Take Care,
Near

 

[SephirothSpawn]

Thanks Guys. It was pretty much as I thought, kinda useless. :lol:

On the other hand, procs are easy if you look at a pretty simple example. They are just kinda like customizable code blocks (bad explanation, but whatever). Not too much more.

Resolved