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What is the difference between Go's function closures and lambda functions for creating and using closure-based functions in Go programs?

In Go, function closures and lambda functions both allow for the creation of anonymous functions. However, there is no difference between the two in terms of functionality. The terms "function closure" and "lambda function" are often used interchangeably in Go.

A function closure is a function value that references variables from outside its body. These variables are called free variables because their values are not determined by the function itself. The function closure can access and manipulate these free variables, even if they are declared in a different scope.

A lambda function, on the other hand, is simply a nameless function that can be assigned to a variable or passed as an argument to another function. Like a function closure, a lambda function can also reference variables from outside its body.

Both function closures and lambda functions are powerful features in Go that enable functional programming techniques, such as higher-order functions and currying, to be used effectively in Go programs.

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