Because several programming languages include the lambda calculus (or something very similar) as a fragment, these techniques also see use in practical programming, but may then be perceived as obscure or foreign.
因為幾個編程語言部份含括了lambda演算（或者非常相似的東西），所以這些技術也可以在實際的編程中見到，但有可能被認為是模糊或外來的。