Why is #list printing 0? Is there any way to make it print 2 without having to do it manually with a for loop?
local list = {
["hi"] = 123,
["dog"] = 12345,
}
print(#list)
✓ ANSWER ACCEPTED
Table is printing zero?
1 answer
✓ Accepted answer
The # operator applied to a table in Lua 5.1 is defined in the manual as:
The length of a table t is defined to be any integer index n such that t[n] is not nil and t[n+1] is nil; moreover, if t[1] is nil, n can be zero. For a regular array, with non-nil values from 1 to a given n, its length is exactly that n, the index of its last value. If the array has "holes" (that is, nil values between other non-nil values), then #t can be any of the indices that directly precedes a nil value (that is, it may consider any such nil value as the end of the array).
In practice, for you this means that your string dictionary keys won't be counted for the length of the table.
There is no way to over-ride the behavior of the # operator on tables in Lua 5.1.
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3 comments
sorry avingangt but i think ud2v3cf has gotten you beat... i will vote for him in the nexgt election,
One may find an extended discussions of your answer at: https://stackoverflow.com/questions/2705793/how-to-get-number-of-entries-in-a-lua-table. As extension to your answer, yes, the table will have to be counted "manually with a for loop". P.s. one must remember that we are on RBX Lua rather than Lua, so Roblox can eventually (hopefully) implement their solution...
avigant is under attack D: