Function; getn - HWRM/KarosGraveyard GitHub Wiki

getn(<tTable>)

(from LUA 4 Manual: 6.1 Basic Functions)

"Returns the 'size' of a table, when seen as a list. If the table has an n field with a numeric value, this value is the 'size' of the table. Otherwise, the 'size' is the largest numerical index with a non-nil value in the table. This function could be defined in Lua:"

function getn (t)
    if type(t.n) == "number" then return t.n end
    local max = 0
    for i, _ in t do
        if type(i) == "number" and i>max then max=i end
    end
    return max
end

<tTable>: the table to get the size of.

Function Reference

LUA 4 Manual: 6.1 Basic Functions

Updated Formatting? Initial
Updated for HWRM? Initial