Difference between val and var. Adding val before the variable declaration makes the variable read-only which means that once you define the variable and assign a value for the first time, you
Scope refers to where in our code variables are available for use. Variables can be declared using var, const, or let. Var is function-scoped, while const and let are block-scoped. Const variables cannot be reassigned, while let variables can be. Var, const, and let can be confusing at first. It does not define a constant value. It defines a constant reference to a value. Because of this you can NOT: Reassign a constant value. Reassign a constant array. Reassign a constant object. But you CAN: Change the elements of constant array. Change the properties of constant object. Computing the difference between two arrays is one of the Set operations. The term already indicates that the native Set type should be used, in order to increase the lookup speed. Anyway, there are three permutations when you compute the difference between two sets: mSparks 27 March 2016 at 16:50. -> type inference (var/val) The above implementation is fully compilable, and gives you var (save in a file called var.java javac var.java then java var, using it would probably get you fired tho. Since all it does is create a million opportunities for bugs. ->higher-kinded types. When comparing a string with a number, JavaScript will convert the string to a number when doing the comparison. An empty string converts to 0. A non-numeric string converts to NaN which is always false. When comparing two strings, "2" will be greater than "12", because (alphabetically) 1 is less than 2.var in c sharp language is introduced in C#3.0. On other hand dynamic is introduced later in C#4.0. 3. Type. In case of var the type of variable is identified by compiler at compilation time. On other hand in case of dynamic the type of variable is identified at run time by compiler itself. 4. Declaration.
tHMg.