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Why arrays instead of structs with non homogenous data?

 
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Lagoon



Joined: 05 Mar 2006
Posts: 118
Location: Italy

PostPosted: Tue Aug 29, 2006 7:32 pm    Post subject: Why arrays instead of structs with non homogenous data? Reply with quote

I've seen a lot of distro scripts use arrays instead of distro to store non homogenous data (such as a mobile reference, a string and an integer). This happens especially when passing variabiles with StartScript(). Shouldn't be better to pass a structure when the variables are non homogenous? Is there any precise design choice behind the use of arrays? Does it improve performance? Am I doing any mistake in using structures instead of arrays for non homogeneous data?

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CWO



Joined: 04 Feb 2006
Posts: 691
Location: Chicago, IL USA

PostPosted: Tue Aug 29, 2006 8:54 pm    Post subject: Reply with quote

I think usually its just a preference. Pass it as an array because you can declare it like

array{ who, item, something }

then split it up into variables in the other script instead of

struct{ who := who, item := item, something := something }

and still breaking it up into variables in the other script since its a bit shorter to use...

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Yukiko



Joined: 02 Feb 2006
Posts: 1094
Location: Southern Central USA

PostPosted: Wed Aug 30, 2006 1:46 am    Post subject: Reply with quote

I think also that it has been said many times that "the way to pass variables between scripts using 'startscript' is to store them in an array". In fact I had thought that was the only way until recently. I can't remember ever reading, atleast here on the forums, of anyone using a struct to pass them.

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Austin
POL Developer


Joined: 30 Jan 2006
Posts: 354
Location: San Diego, California

PostPosted: Wed Aug 30, 2006 2:05 am    Post subject: Reply with quote

You can pass anything... but only 1 thing.
Arrays are just a preference, as CWO said.
Mainly its because of how they are easier to setup and read when used.

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tekproxy
Distro Developer


Joined: 06 Apr 2006
Posts: 350
Location: Nederland, Texas

PostPosted: Wed Aug 30, 2006 2:29 am    Post subject: Reply with quote

Programmers are the laziest people--the less keystrokes the better. Why do you think we write programs to do stuff for us?

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Lagoon



Joined: 05 Mar 2006
Posts: 118
Location: Italy

PostPosted: Wed Aug 30, 2006 5:21 am    Post subject: Reply with quote

Ok, since noneone told me I'm a fool using a more complex structure rather than an array, I'll stay with structures, which I use with startscript whenever variabiles passed are non homogeneous. Maybe I'll stay with arrays even if variables are non homogeneous only in those rare cases where performance is critical

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Yukiko



Joined: 02 Feb 2006
Posts: 1094
Location: Southern Central USA

PostPosted: Wed Aug 30, 2006 5:35 am    Post subject: Reply with quote

Lagoon, if it works than you're not a fool. Fools are the ones that keep on using something even when it doesn't work.

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CWO



Joined: 04 Feb 2006
Posts: 691
Location: Chicago, IL USA

PostPosted: Wed Aug 30, 2006 1:50 pm    Post subject: Reply with quote

tekproxy wrote:
Programmers are the laziest people--the less keystrokes the better. Why do you think we write programs to do stuff for us?



We're not lazy... its called efficiency... Very Happy

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Yukiko



Joined: 02 Feb 2006
Posts: 1094
Location: Southern Central USA

PostPosted: Wed Aug 30, 2006 3:05 pm    Post subject: Reply with quote

Besides that when we use other people's code to create our own programs, that's not stealing it's called recycling. Just think of how much of a problem we'd have with all those virtual landfills if we didn't reuse code.

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Marilla



Joined: 02 Feb 2006
Posts: 329

PostPosted: Wed Aug 30, 2006 4:05 pm    Post subject: Reply with quote

heh.. to pile on; If you find that using a struct works best for you, then by all means, use them! My preference for arrays is due to what was mentioned above; ease of creating and passing an array. However, if a struct makes your code easier to read or understand, or just seems better to you, use it Smile

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Lagoon



Joined: 05 Mar 2006
Posts: 118
Location: Italy

PostPosted: Wed Aug 30, 2006 6:49 pm    Post subject: Reply with quote

Yes, I find it much easyer to read, especially when the array is big after months it's hard to remember which index was what (or, one can add comments, but I prefere to have variables autoexplaining their meaning)
I asked onyl because I wanted to know if there is any relevant efficiency different behind that choice of if it's just a different style

Author Message
Marilla



Joined: 02 Feb 2006
Posts: 329

PostPosted: Thu Aug 31, 2006 3:52 am    Post subject: Reply with quote

There -might- be the most miniscule of effeiciency differences between the two. However, it's not likely to even be measurable unless we're talking really huge collections (array vs dictionary). Generally, indexing an array is faster than searching an index of a dictionary, but the difference is likely to be terribly small, unless you are talking about comparing an array or collection of hundreds or thousands of items in them.

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