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

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

Vbscript dictionary object properties, Just like normal objects Dictionary ...

Just like normal objects Dictionary object also has definite properties. These properties can be set to any valid value & can be retrieved as and while required. Pr

Graphics device interface - windows programming , Graphics Device Interface...

Graphics Device Interface - GDI:   The GDI is a windows API. The GDI uses a set of generic graphics objects to draw to the screen, to the memory and printers. Therefore the p

Imagelist, IMAGELIST The CImageList object is a collection of the same ...

IMAGELIST The CImageList object is a collection of the same sized images, all of which can be referred to by its index. The ImageList are used to proficiently manage the large

Hangman, how to add the hangman images

how to add the hangman images

Steps to create a rectangle in the client region, STEPS TO CREATE A RECTANG...

STEPS TO CREATE A RECTANGLE IN THE CLIENT REGION 1. Generate a SDI application and name it as a brush. 2. Handle the WM_LBUTTONDOWN message for the CBrushView object id.

Displaying the file without scrolling - document class, Displaying the file...

Displaying the file Without Scrolling: To display a file follow the steps as shown below: 1. Generate a SDI application. 2. Type the coding as shown in the Serialize els

Investment loan program, I have all my program done except the loan part th...

I have all my program done except the loan part that I am having a lot of troubles with

Create an application, 1. Create a new solution file named Ch03HandsOnProje...

1. Create a new solution file named Ch03HandsOnProject1. 2. Rename the form and set the filename of the form to frmMain and frmMain.vb, respectively. 3. Set the appropriate p

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