COMP 302 Lecture Notes - Lecture 11: Exclusive Or, Substitution Model
2 Feb 2017
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Document Summary
The two things that set up this correspondence in f# is: let. It says that the name x and the value 1729 are connected, and thereafter when using the name x, it is replaced by the value 1729. This means that they are only valid for part of the execution of the program. Scope : where a binding is valid (if it is local) is called its scope. Output val x : int x = 1 val y : int = 2 val it : int = 3. The interpreter echos back the bindings that have been made. It has bound x to 1, y to 2, and it to 3. Every expression being evaluated is temporarily assigned the name it. Sometimes, you don"t want a binding to be there all the time; this is when you use a local binding. Output let x = 1 let y = 2 x + y.
