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

Numeric data types - visual basic, Numeric data types: The Integer, lo...

Numeric data types: The Integer, long integer are used for entire numbers. Single and doubles are related with the floating point numbers. Currency is related with numbers dea

Number property, Returns or sets a numeric value indicating an error. Numbe...

Returns or sets a numeric value indicating an error. Number is the Err object's default property. While returning user-defined error from an Automation object, set Err.Number throu

Introduction to gui design and file handling, INTRODUCTION TO GUI DESIGN AN...

INTRODUCTION TO GUI DESIGN AND FILE HANDLING   The aim of the user interface design is to attain the user's goals. When the user's goals are met, the user is satisfied and the

Scope and lifetime of variables, The scope of a variable is finding out by ...

The scope of a variable is finding out by where you declare it. While you declare a variable in a procedure, only code in that procedure can access or alter the value of that varia

Properties of object method, Properties: VBScript Err Object ...

Properties: VBScript Err Object   Properties   Description   D escription Property The descriptive string related

Coding, Write an event procedure to automate the billing system of a superm...

Write an event procedure to automate the billing system of a supermarket. Give the details of database tables, forms, controls and menu design (if any). Make assumptions, wherever

Balancesheet, i need sample balance sheet form in vb.net

i need sample balance sheet form in vb.net

Project on VB6.0, I need a VB6 software for making a soccerboard for 10 tea...

I need a VB6 software for making a soccerboard for 10 teams & automatically generate their fixtures

Program to order a product from inventory, Write a program that permits the...

Write a program that permits the user to order a product from inventory. The user selects the product and enters the quantity. If there is sufficient quantity on hand of the produc

Help file property, Sets or returns wholly qualified path to a Help File. I...

Sets or returns wholly qualified path to a Help File. If Help file is indicated in HelpFile, it is called automatically when the user clicks Help button (or presses the F1 key) in

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