What is the difference between dim and static




















Halle Posted July 15, 0 Comments. Michael Irwin Posted July 15, 0 Comments. Have fun Mike. Robert Crombie Posted July 16, 0 Comments.

Jon Jacobs Posted July 16, 0 Comments. Titwhisperer Posted July 18, 0 Comments. Dim is the act of assigning something into memory. Register or Login.

Welcome back! Reset Your Password We'll send an email with a link to reset your password. Stay ahead! Get the latest news, expert insights and market research, tailored to your interests. Sign in with email Enter the email address associated with your account. If you declare more than one variable with one As clause, you cannot supply an initializer for that group of variables.

You can specify different data types for different variables by using a separate As clause for each variable you declare. Each variable takes the data type specified in the first As clause encountered after its variablename part. You can declare a variable to hold an array , which can hold multiple values. To specify that a variable holds an array, follow its variablename immediately with parentheses.

For more information about arrays, see Arrays. You can specify the lower and upper bound of each dimension of an array. To do this, include a boundslist inside the parentheses. For each dimension, the boundslist specifies the upper bound and optionally the lower bound. The lower bound is always zero, whether you specify it or not. Each index can vary from zero through its upper bound value. The following two statements are equivalent. Each statement declares an array of 21 Integer elements.

When you access the array, the index can vary from 0 through The following statement declares a two-dimensional array of type Double. Note that an upper bound represents the highest possible value for the index, not the length of the dimension. The length of the dimension is the upper bound plus one.

You can leave all the bounds blank in an array declaration. If you do this, the array has the number of dimensions you specify, but it is uninitialized. It has a value of Nothing until you initialize at least some of its elements. The Dim statement must specify bounds either for all dimensions or for no dimensions.

If the array has more than one dimension, you must include commas between the parentheses to indicate the number of dimensions. You can declare a zero-length array by declaring one of the array's dimensions to be A variable that holds a zero-length array does not have the value Nothing.

Zero-length arrays are required by certain common language runtime functions. If you try to access such an array, a runtime exception occurs. For more information, see Arrays. You can initialize the values of an array by using an array literal.

For multidimensional arrays, the initialization for each separate dimension is enclosed in braces in the outer dimension. The elements are specified in row-major order. For more information about array literals, see Arrays.

Below is an explanation of each of the keywords you can use. By declaring a variable within a procedure, it can only be used in that procedure - there is no way to use it anywhere else in your program. There are three keywords you can use: Dim Each time the procedure is called, the value is reset to the default value for the data type of the variable 0 for numbers, "" for normal strings [fixed length strings are filled with Chr 0 ], False for booleans, Static The variable keeps the previous value each time you call the procedure.

By declaring a variable in the General Declarations section, it can be used by every procedure in that code file - and sometimes by other code modules too. The variable keeps its value for as long as the code file is loaded note that you cannot unload a standard module [.

There are five keywords you can use: Private The variable can only be used in the code file which it is declared in. Public The variable can be used by any code file in the project. Learn more. What's the difference between dim on the member level and static on the procedure level? Ask Question. Asked 11 years, 10 months ago. Active 9 years, 6 months ago. Viewed 1k times. Dequeue End Sub Should I use the Static method which seems to be slower on situations like this, or the dim on member level method that I already use?

Object, ByVal e As System. EventArgs Handles Button1. Click stopwatch1. Reset stopwatch1. Stop Label1. ElapsedMilliseconds stopwatch1. Stop Label2.



0コメント

  • 1000 / 1000