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

Program for add integers from 1-1000, Using Visual Studio 2010 C++ 1) U...

Using Visual Studio 2010 C++ 1) Using Windows Explorer, make a copy of Irvine\examples\Project_sample folder in the folder where you keep your materials for this course.

Event-driven programming - windows programming, Event-Driven Programming: ...

Event-Driven Programming: The Event-driven programming allows the program to react to various inputs or events.   The action on a graphical component is an event. For il

Dictionary, how to make dictionary in vb using ms access

how to make dictionary in vb using ms access

C#, i want to print number following pattern 1 12 123 1234

i want to print number following pattern 1 12 123 1234

Software that is obscure - basics of gui design, Software That Is Obscure: ...

Software That Is Obscure: The Software hides the intensions, meaning and actions from the user. For illustration, if a user is asked whether a full installation, the custom in

Dialog - database applications, DIALOG   The dialog is a window which ...

DIALOG   The dialog is a window which contains controls. The Dialog boxes are the form of input and output. The control can be placed on the dialog box for communicating. If y

Message routing - visual basic, Message Routing: The system posts the ...

Message Routing: The system posts the messages to a first-in, first-out queue known as the message queue or it sends the messages directly to a window procedure. The Messages

Files in a sdi and mdi application, Files in a SDI and MDI Application: ...

Files in a SDI and MDI Application: Both the SDI and MDI projects have 4 implementation files (.cpp extension). These are the files equivalent to the Document Class, View Clas

Do loops, You can employ Do...Loop statements to run a block of statements ...

You can employ Do...Loop statements to run a block of statements indefinite number of times. The statements are repeated either whilst a condition is True or till a condition becom

#simple interest using pseudocode and flowcharts, simple interest using flo...

simple interest using flowchart and psuedocode using the formular s= x + nrx

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