CODEWITHSUNDEEP
lua
MrOverflow
MrOverflow

Reputation: 49

When using # to find array length, the array is Null

So I have an array of people that I want to choose from at random...

local strong = {

'Laura',
'David',
'Christopher'

}

How would I pick randomly from this table? So far I have ran

print(math.random(#strong))

But when I run that get this error

lua: again.lua:19: attempt to get length of global 'strong' (a nil value)

Why would the array be nil, even though there is something inside the array?

Upvotes: 1

Views: 199

Answers (1)

tonypdmtr
tonypdmtr

Reputation: 3225

If you use Lua interactively, put everything inside a do block, or remove local from your table variable to make it global. The interpreter executes each statement separately, losing the local of the previous statement.

Also, set the random seed with something like: math.randomseed(os.time()) to avoid getting the same value each run.

Upvotes: 1

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