The main difference between let and lambda is that let is used to bind a value to a variable for use within a lexical scope, while lambda is used to define an anonymous function that can be used as a value.
When generating intermediate results in Common Lisp, the choice between let and lambda depends on whether the result is a simple value or a more complex set of operations.
Let is typically used when generating a simple value that is calculated within a local scope, such as converting a number to a string or performing a mathematical calculation. For example:
(let ((x 10))
(+ x 5))
In this example, the value of x is bound to 10 within the let expression, and the result of adding 5 to x is returned as the intermediate result.
Lambda, on the other hand, is used when generating a more complex set of operations that can be reused multiple times within a larger program. For example:
(lambda (x)
(let ((y (* x x)))
(+ y 1)))
In this example, a lambda expression is used to define an anonymous function that takes an input value x and calculates y as the square of x. The intermediate result returned by the function is then the sum of y and 1.
Overall, the choice between let and lambda depends on the specific requirements of the program and the level of complexity involved in generating the intermediate results.
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Asked: 2021-12-11 11:00:00 +0000
Seen: 2 times
Last updated: May 10 '22
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