You already have the solution in the question — the only way is to iterate the whole table with pairs(..). Also, notice that the “#” operator’s definition is a bit more complicated than that. Let me illustrate that by taking this table: According to the manual, any of 3, 5 and 9 are valid results for #t. The only … Read more
You’re not returning anything from your function call. Also, use local variables inside functions.
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No, setting the key’s value to nil is the accepted way of removing an item in the hashmap portion of a table. What you’re doing is standard. However, I’d recommend not overriding table.remove() – for the array portion of a table, the default table.remove() functionality includes renumbering the indices, which your override would not do. If you do want … Read more
As other answers have said, the string concatenation operator in Lua is two dots. Your simple example would be written like this: However, there is a caveat to be aware of. Since strings in Lua are immutable, each concatenation creates a new string object and copies the data from the source strings to it. That … Read more