Lua, size of table (#table_name or table.getn(table_name), it returns sometimes 0
lua
Solution
Go through the manual:
2.5.5 - The Length Operator
The length operator is denoted by the unary operator #. The length of a string is its number of bytes (that is, the usual meaning of string length when each character is one byte).
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).
Problem
When `#table_name` does return not 0 value? And again, when `table.getn(table_name)` does return not 0 value?