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

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

WebTime ASP.net , Let us modify the webTime ASP.NET project that we develop...

Let us modify the webTime ASP.NET project that we developed. We will add drop down lists for modifying the different style elements for the label element that displays the time. We

MATHEMATICS PROJECT, HOW TO SOLVE ORDINARY DIFFERENTIAL EQUETION IN VISUAL ...

HOW TO SOLVE ORDINARY DIFFERENTIAL EQUETION IN VISUAL BASIC PROGRAMMING

Adding events in visual basic , Adding Events in VB   For adding the e...

Adding Events in VB   For adding the events in VB, first double click on the command button with the caption hello. The Private Sub command1_Click () and End Sub would be

Indexing - visual basic, Indexing: In libraries, the card catalog is t...

Indexing: In libraries, the card catalog is the index. The three indices are used in the library. The Author, Subject and title are the 3 indices. Each index is relative. The

We are need of vb.net dynamically created gridview, We are need of VB.NET D...

We are need of VB.NET Dynamically Created Gridview with Textboxes, DDLs Utilizing VB code in ASP.NET I dynamically create a calendar showing either 3 or 6 or 9 or 12 months, dep

Data types - windows programming, Data types: The New data types were ...

Data types: The New data types were defined by using the typedef or #define statements. This was to allow the transition from 16 bit to 32 bit system. Some of the fresh data t

Develop a web page for accepting information regarding stock, Develop a web...

Develop a web page that is used for accepting information regarding stocks. Make sure the form carry out the possible validations. The simple instance code below merely illustrates

Accelerators - intrinsic control, Accelerators: The Accelerators are s...

Accelerators: The Accelerators are short cut keys. The Accelerators are formed by placing an ampersand before any of the characters of the Caption. As a product the letter fol

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