K, v in pairs?

[Lloyd Logan]

Hey,

In alot of the community scripts and WIKI examples, There's a line "for k, v in ipairs" what does this mean? and string.byte, what does this mean?

full :

function startup() 
    local file = xmlLoadFile("pns.xml") 
    for k, v in ipairs(xmlNodeGetChildren(file)) do 
        local pos = split(xmlNodeGetAttribute(v,"pos"),string.byte(",")) 
        local marker = createMarker(pos[1],pos[2],pos[3],"cylinder") 
        createBlipAttachedTo(marker,63,2,255,0,0,255,0,250) 
        setElementData(marker,"pnsMarker",true) 
        setGarageOpen(tonumber(xmlNodeGetAttribute(v,"garage")),true) 
    end 
    xmlUnloadFile(file) 
end 
addEventHandler("onResourceStart",getResourceRootElement(),startup) 

Thanks Lloyd

[psydomin]

It is a loop through a table

"for" every "k" (key/index) and ", v" (value) "in ipairs(tableName)" (valid k and v on the same row of the table tableName) "do" something

[Lloyd Logan]

It is a loop through a table

"for" every "k" (key/index) and ", v" (value) "in ipairs(tableName)" (valid k and v on the same row of the table tableName) "do" something

Ahh, may be a bit much but could you give me an example

[psydomin]

table1 = { 
[1] = {"This is the first row"}, 
[2] = {"This is the second row"} 
} 
for k, v in ipairs(table1) do 
outputChatBox("This is the row's index: "..k..", and this is the value of that row: "..v ) 
end 

it should output on the chat box:"

This is the row's index: 1, and this is the value of that row: This is the first row

This is the row's index: 2, and this is the value of that row: This is the second row

"

[Lloyd Logan]

table1 = { 
[1] = {"This is the first row"}, 
[2] = {"This is the second row"} 
} 
for k, v in ipairs(table1) do 
outputChatBox("This is the row's index: "..k..", and this is the value of that row: "..v ) 
end 

it should output on the chat box:"

This is the row's index: 1, and this is the value of that row: This is the first row

This is the row's index: 2, and this is the value of that row: This is the second row

"

Thank you very much! I understand this quite a bit more!

[Castillo]

Maybe you already know this, but "k" and "v" can be anything, doesn't has to be these two letters.

[Lloyd Logan]

Maybe you already know this, but "k" and "v" can be anything, doesn't has to be these two letters.

I didn't, Thanks!