I know I can do this to get each Key and Value in an array, but how do I only get the first?
A dictionary kind of array.
local Array = {
["Entry1"] = {1,2,3},
["Entry2"] = {4,5,6}
}
for k, v in pairs(Array) do
return k, v
end
I need it to only return the first key and value
You can use the standard next Lua function for this.
local t = {
["Entry1"] = { 1, 2, 3 },
["Entry2"] = { 4, 5, 6 }
}
local key, value = next(t)
print(key, value)
Please note, however, that the order of the keys of a dictionnary-formatted table are undefined. Meaning "Entry1" and its value will not necessarily come out before "Entry2" and its associated value.
I ran this and it actually outputs Entry2 as the key.
@IDidMakeThat Yeah, I totally forgot to mention that. 'Was editing as you commented, lol.
Thanks, this works for me. I just needed a random entry out of my array, as any of the entries would work for my application.
local k,v = 1, Array[1]
I recommend you add some lines to check if Array is empty or not, can simply be done with the #operator .
I mean an array like a dictionary, sorry forgot to add that
There's not really a good way to do this, as the order in which indices are traversed by the next () and pairs() function is undefined. For example,
local Table = {
x = 1,
y = 2,
z = 3
}
for k, v in pairs(Table) do
print(k, v)
end
might output:
y 2
x 1
z 3
Therefore, there's no easy way to tell which key-value pair is the first one (as far as I know).
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3 comments
Arrays and dictionnaries are complete opposites. Besides, there's no such thing as an 'array' or a 'dictionnary' in Lua. Those are just concepts people came up with. You're thinking of a 'table' with string keys.
You could just do Array["Entry"..num] if you're naming all of 'em consistently like that.
Well the entry names are random so I wouldn't know the string to index them with.