Switch

Switch is used to emulate a switch statement.

Switch(tbl)

In normal Lua syntax comparing a single value several times is repetitive and long.

Variable = 'Match1'

if Variable:lower() == 'match1' then
	result = 'Example text.'
elseif Variable:lower() == 'match2' then
	result = 'Other example text.'
else
	result = 'No match found.'
end

Switch statements can make the code much shorter.

Variable = 'Match1'

Table = switch{
	match1 = function(tbl) return tbl[2] end,
	match2 = function(tbl) return tbl[2] end,
	default = function(tbl) return 'No match found' end,
}

result = Table:case(Variable:lower(), 'Example text.')
-- Emulates a switch statement.
-- The functions in the switch table receive a table as a parameter.
-- The first index of the table is the match itself.

function switch(tbl) -- Used to emulate a switch statement
	tbl.case = function(...)
		local t = table.remove(arg,1)
		local f = t[arg[1]] or t.default
		if f then
			if type(f) == 'function' then
				f(arg)
			else
				print('Case: ' .. tostring(x) .. ' not a function')
			end
		end
	end
	return tbl
end