Useful Lua snippets

snippets.lua

--[[
Does "str" start with "start"?
]]
local function starts_with(str, start)
   return str:sub(1, #start) == start
end


--[[
Get the item with a getName() of 'name' from the table 'collection'
]]
local function getFromCollection(collection, name)
  for _,item in ipairs(collection) do
    if item:getName() == name then
      return item
    end
  end
  return nil
end