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local Data = {}
function Data.enum(values)
local result = {}
for i = 1, #values do
local v = values[i]
result[v] = v
end
return result
end
function Data.set_of(list)
local set = {}
for i = 1, #list do
set[list[i]] = true
end
return set
end
function Data.list_reverse(list)
local result = {}
for i = #list, 1, -1 do
result[#result + 1] = list[i]
end
return result
end
function Data.list_map(fn, list)
local result = {}
for i = 1, #list do
result[#result + 1] = fn(list[i], i)
end
return result
end
function Data.tbl_pack(...)
return { n = select("#", ...), ... }
end
function Data.when(condition, value)
return condition and value or nil
end
function Data.coalesce(...)
local args = Data.tbl_pack(...)
for i = 1, args.n do
local variable = args[i]
if variable ~= nil then
return variable
end
end
end
return Data
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