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➜ MUSHclient
➜ Plugins
➜ do I need pairs or ipairs for this?
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do I need pairs or ipairs for this?
|
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| Posted by
| Kevnuke
USA (145 posts) Bio
|
| Date
| Sun 31 Mar 2019 12:11 AM (UTC) Amended on Sun 31 Mar 2019 12:13 AM (UTC) by Kevnuke
|
| Message
| I'm taking JSON data from IRE GMCP messages and am trying to get the named index from the table. I keep getting the value and not the key AND value. I tried to test it in immediate execution but MUSHclient yelled at me for trying to
I want to have whatever the index names are in the JSON data be what the index is named in the Lua table.
For example, if I get this from the Achaea:
Char.Name { "name": "myname", "fullname": "myfullname" }
What I'll end up with is:
stats = {
name = "myname",
fullname = "myfullname"
}
I've tried this and a few variations of it so far just to see if I can get the name of the index to print:
string = [[{"name": "myname", "fullname": "myfullname"}]] -- many values for fullname have single quotes in them.
test = json.decode('[' .. string .. ']')[1]
for k,v in pairs (test) do
print (test[k])
end
| | Top |
|
| Posted by
| Kevnuke
USA (145 posts) Bio
|
| Date
| Reply #1 on Sun 31 Mar 2019 12:45 AM (UTC) |
| Message
| Omg I'm dumb, I was doing too much. This worked:
function test_data()
string = [[{"name": "myname","fullname": "myfullname"}]]
test = json.decode('[' .. string .. ']')[1]
for k,v in pairs (test) do
print (k .. " " .. v)
end
end
| | Top |
|
| Posted by
| Nick Gammon
Australia (23,163 posts) Bio
Forum Administrator |
| Date
| Reply #2 on Sun 31 Mar 2019 06:47 AM (UTC) |
| Message
| It looks like you've solved it, but for reference ipairs only returns numerically keyed items starting at 1 (and stopping if it hits a gap).
So, for alpha-keyed items pairs is more appropriate. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
|
| Posted by
| Kevnuke
USA (145 posts) Bio
|
| Date
| Reply #3 on Sun 31 Mar 2019 06:49 AM (UTC) Amended on Sun 31 Mar 2019 06:51 AM (UTC) by Kevnuke
|
| Message
| ohhh so that wouldn't have worked anyway. Thanks I always forget the difference. :D
But why did it throw a bunch of errors when i tried to require ipairs? looked like one for each dll. My MUSHclient folder is in my OneDrive folder, if that makes a difference | | Top |
|
| Posted by
| Nick Gammon
Australia (23,163 posts) Bio
Forum Administrator |
| Date
| Reply #4 on Sun 31 Mar 2019 08:25 AM (UTC) Amended on Sun 31 Mar 2019 08:26 AM (UTC) by Nick Gammon
|
| Message
| You don't need to require ipairs. It is a built-in function.
It would be like doing this:
You don't need to do that, and there would be no file print.lua in your directory. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
|
| Posted by
| Kevnuke
USA (145 posts) Bio
|
| Date
| Reply #5 on Sun 31 Mar 2019 08:30 AM (UTC) |
| Message
| | Hmm I see. I just thought it was weird when I tried ipairs and it did nothing. No output, no errors, nothing. I'm not really used to that. lol | | Top |
|
| Posted by
| Nick Gammon
Australia (23,163 posts) Bio
Forum Administrator |
| Date
| Reply #6 on Sun 31 Mar 2019 08:38 AM (UTC) |
| Message
| | It did nothing because there were no numeric keys. |
- Nick Gammon
www.gammon.com.au, www.mushclient.com | | Top |
|
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