julieta/utils.lua at main · MarioAriasC/julieta · GitHub

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function Ternary(cond, T, F)
    if cond then
        return T
    else
        return F
    end
end

function Enum(array)
    local length = #array
    for i = 1, length do
        local v = array[i]
        array[v] = i
    end

    return array
end

function Map(array, body)
    local t = {}
    for k, v in pairs(array) do
        t[k] = body(v)
    end
    return t
end

function Also(value, body)
    body(value)
    return value
end

function ForEach(array, body)
    for i = 1, #array do
        body(array[i])
    end
end

function ForEachIndexed(array, body)
    for k, v in pairs(array) do
        body(k, v)
    end
end

function Keys(map)
    local keys = {}
    for k, v in pairs(map) do
        table.insert(keys, k)
    end
    return keys
end

function Len(tbl)
    return #Keys(tbl)
end