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

Vbscript variables, A variable is convenient placeholder which refers to a ...

A variable is convenient placeholder which refers to a computer memory location where you can store program information which may change when your script is running. For instance,

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

Explain Databound Controls, Databound Controls - A controls use to display ...

Databound Controls - A controls use to display the contents of table using Data Control , have to bound each Control to the specific field and the controls are Known as the Data Bo

Vbscript procedures, A Sub procedure is a series of VBScript statements, en...

A Sub procedure is a series of VBScript statements, enclosed through Sub & End Sub statements which perform actions however don't return a value. A Sub procedure can take arguments

Design the lookup tables for coding a message, Task 1 - Design the DATEX o...

Task 1 - Design the DATEX operator's user interfaces for: 1. Preparing messages. 2. Sending messages. 3. Viewing received messages. 4. Optionally view the details of the codin

File system controls, FILE SYSTEM CONTROLS There are 3 file system cont...

FILE SYSTEM CONTROLS There are 3 file system controls as shown in figure. The drive list box, directory list box & the file list box. The drive list box control is used to exhi

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

Windows programming, WINDOWS PROGRAMMING The Windows programming is a d...

WINDOWS PROGRAMMING The Windows programming is a developing application using the C and the native Win32 application interface (API) or C++ and the class libraries like Microso

Multiple Forms Issue, i want to use two forms in vb.net. when the progress ...

i want to use two forms in vb.net. when the progress bar in form1 reaches on a specific value then disable form1 and progress bar will stop and the second Form2 will popup which wi

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