Variant subtypes, Visual Basic Programming

Assignment Help:

Beyond the simple string or numeric classifications, Variant can make added distinctions regarding the specific nature of numeric information. For instance, you can have numeric information which represents a date or a time. While used with other date or time data, the result is expressed as a time or date. You can also contain a rich variety of numeric information ranging from Boolean values to enormous floating-point numbers. These distinct categories of information which can be contained in a Variant are called subtypes. Mostly time, you can just put the type of data you desire in a Variant, & the Variant acts in a way that is most suitable for the data it contains.

The following table illustrates the subtypes of data that a Variant can contain.

Subtype

Description

EmptyVariant

Uninitialized. Value is 0 for numeric variables or a zero-length string

("") for string variables.

NullVariant

Intentionally have no valid data.

Boolean

Contains either True or False.

Byte

Contains integer in range 0 to 255.

Integer

Contains integer in range -32,768 to 32,767.

Currency

-922,337,203,685,477.5808 to 922,337,203,685,477.5807.

Long

Have integer in range -2,147,483,648 to 2,147,483,647.

Single

Have a single-precision, floating-point number in the range -

3.402823E38 to -1.401298E-45 for -ve values; 1.401298E-45 to

3.402823E38 for positive values.

Double

Have a double-precision, floating-point number in the range -

1.79769313486232E308 to -4.94065645841247E-324 for -ve values; 4.94065645841247E-324 to 1.79769313486232E308 for positive values.

Date

Have a number that represents a date between January 1, 100 to

December 31, 9999.

Time

Represents a time among 0:00:00 and 23:59:59

String

Have a variable-length string which can be up to approximately 2 billion characters in length.

Object

Have an object.

Error

Have an error number.

You can employ conversion functions to changed data from one subtype to another. Additionally, the VarType function returns information regarding how your data is stored within a Variant.


Related Discussions:- Variant subtypes

Check whether a number is palindrome or not, Function IsPalindrome(str) ...

Function IsPalindrome(str) Dim iStart,iEnd,ctr,blnPalin str=trim(str) blnPalin=true iEnd=len(str) iCnt=round(iEnd / 2) iStart=1 for ctr=1 to cint(iCnt) if(mid(str,iEnd,

Hierarchy of operation, what are the functions and the importance of hierar...

what are the functions and the importance of hierarchy operators

Creation of the menu in visual basic, Creation of the Menu in VB 1. Ini...

Creation of the Menu in VB 1. Initiate a new project by choosing a file and then new project. 2. Now select the Standard EXE as the Project type. 3. Build the Form1 activ

The view - document view architecture, The View: The view is used for ...

The View: The view is used for visualising. For illustration, while performing word processing, the user works on a sequence of words which compose the text. If a user is perf

Do while loop statement, Do While Loop Statement : The statements conta...

Do While Loop Statement : The statements contained by the do...while loop block executes till the condition given in the while is true. The working of do...loop is elaborate

Steps for creating a multiple document interface (mdi) form, Steps for Crea...

Steps for Creating A MDI Form: 1. Build a new form and set IsMdiContainer property to true. 2. Build a child form class to add to the form. 3. Now Right click the proj

Messages - visual basic programming, MESSAGES The Windows-based applica...

MESSAGES The Windows-based applications do not make explicit function calls to acquire input. They wait for the system to pass the input to them. The system passes input to the

Introduction to visual c++ programming, INTRODUCTION to VISUAL C++ PROGRAMM...

INTRODUCTION to VISUAL C++ PROGRAMMING This section introduces you to develop the applications using VC++. The Single document interface (SDI), multiple document interface (MDI

Application for vehicle dealership, A vehicle dealership has a number of di...

A vehicle dealership has a number of different items for sale: motorbikes, cars, vans and boats. Each class of items for sale has different characteristics that need to be recor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd