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

Gdi objects, GDI OBJECTS   The CDC provides 5 versions for the GDI obj...

GDI OBJECTS   The CDC provides 5 versions for the GDI objects. They are fonts, brushes, pens, bitmaps and regions. The Select Object function substitutes the current GDI objec

Create a procedure - vbscript, Each piece of data is passed in your process...

Each piece of data is passed in your process using an argument. Arguments serve like placeholders for the data you wish to pass into your process. You can name your arguments along

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

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

Message loop, MESSAGE LOOP   The message loop is the code in the Win 3...

MESSAGE LOOP   The message loop is the code in the Win 32 based application. It retrieves messages from the application's message queue and passes these to the related window

Retrieval methods - document in visual programming, Retrieval Methods: ...

Retrieval Methods: There are 3 ways to find a document. The primary method is a positional retrieval. This is achieved by keeping in mind where you left it. The next method is

Sdk programming, SDK PROGRAMMING The SDK programming is a developing Wi...

SDK PROGRAMMING The SDK programming is a developing Win 32 based programs using the Win 32 API that directly interact with the hardware. Therefore the execution of the SDK prog

Application to count the number of possible triangles, A triangle is equila...

A triangle is equilateral if all three sides are equal, isosceles if any two (but no more than two) sides are equal, and scalene if no two sides are equal. A triangle will be input

Aim - control statement, Aim: To exhibit what is the day when the seco...

Aim: To exhibit what is the day when the second command button is clicked and to clear the screen when the first command button is clicked. The functioning of this program is

To calculate rectangle, two sides are given of a sheet e.g 23*36 i want hal...

two sides are given of a sheet e.g 23*36 i want half or 1/2 of this sheet next i want 1/4(one fourth) of this sheet if sheet size is 23*36 next i want 1/8 similary as above

ADO.net architecture, write a detailed account on ADO.net architecture.

write a detailed account on ADO.net architecture.

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