Lambdas and expression trees play key roles in Language Integrated Query (LINQ). Its members are referred to as "Lambda Chis", "LCAs", "Lambdas", and "Choppers". C# and D have lambdas (closures) that encapsulate a function pointer and related variables. In PHP, anonymous classes, closures and lambdas are fully supported. In C#, anonymous classes are not necessary, because closures and lambdas are fully supported. Swift supports closures (known as lambdas in other languages). C# and Java feature a special type of in-line closures called lambdas. Kotlin provides support for higher order functions and anonymous functions or lambdas. In the Lambdas, LLT engine produces and of torque. Alternatively, lambdas can be used.