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

#title., Write a program to print a digital clock which displays the time f...

Write a program to print a digital clock which displays the time for 2 hours . ..

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

Project to display a database - data control, A Project to Display a Databa...

A Project to Display a Database: 1. Suppose that there are 5 fields describing a customer. Id, address, name, city & state. 2. Put 5 text boxes on the form to exhibit the r

Switch 2 images, I have a problem with Visual Basic: exchangeable 2 image...

I have a problem with Visual Basic: exchangeable 2 images of place I have 2 picturebox''s placed a button when I click on the button, the 2 pictures of this place change with e

Help, Assume that s is a string variable that is supposed to contain a va...

Assume that s is a string variable that is supposed to contain a value to be converted to integer. Write a fragment of code that converts the value to integer variable and displ

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

Loops - VBScript, Using Loops to Repeat Code Looping let you to run a g...

Using Loops to Repeat Code Looping let you to run a group of statements repeatedly. Some loops repeat statements till a condition are False; others repeat statements till a con

Visual processing - visual interface design, Visual Processing: Our mi...

Visual Processing: Our mind groups the things into patterns and this allows us to process the visual information. Understanding and applying how the human mind processes the v

Use of wm_size message - class wizard, Use of WM_SIZE Message: Wheneve...

Use of WM_SIZE Message: Whenever the WM_SIZE message is handled and the graphical objects on the output window will also change consequently to the output window. The functi

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