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Why Software Developer used to declare the variable type When declare the variable?

The variable declaration tells the compiler that the variable will be of a certain type. Thus, the compiler can (a) reserve an appropriate amount of space for the variable, and (b) do some checks that are otherwise not possible, such as avoiding operations with incompatible data types, at compile time.Some languages (I use Visual FoxPro) have only a single variable type, "variant". That is, the variable can actually change from one type to another at runtime, and it is stored in a way that allows this type-changing - precisely the "variant" type. Some versions of Basic have a "variant" type too. Unfortunately, that way many errors don't get caught during compilation, and will only appear later, at runtime. If you use a language that allows both specific types and variant types, better use the variant type sparingly, because of this.The variable declaration tells the compiler that the variable will be of a certain type. Thus, the compiler can (a) reserve an appropriate amount of space for the variable, and (b) do some checks that are otherwise not possible, such as avoiding operations with incompatible data types, at compile time.Some languages (I use Visual FoxPro) have only a single variable type, "variant". That is, the variable can actually change from one type to another at runtime, and it is stored in a way that allows this type-changing - precisely the "variant" type. Some versions of Basic have a "variant" type too. Unfortunately, that way many errors don't get caught during compilation, and will only appear later, at runtime. If you use a language that allows both specific types and variant types, better use the variant type sparingly, because of this.The variable declaration tells the compiler that the variable will be of a certain type. Thus, the compiler can (a) reserve an appropriate amount of space for the variable, and (b) do some checks that are otherwise not possible, such as avoiding operations with incompatible data types, at compile time.Some languages (I use Visual FoxPro) have only a single variable type, "variant". That is, the variable can actually change from one type to another at runtime, and it is stored in a way that allows this type-changing - precisely the "variant" type. Some versions of Basic have a "variant" type too. Unfortunately, that way many errors don't get caught during compilation, and will only appear later, at runtime. If you use a language that allows both specific types and variant types, better use the variant type sparingly, because of this.The variable declaration tells the compiler that the variable will be of a certain type. Thus, the compiler can (a) reserve an appropriate amount of space for the variable, and (b) do some checks that are otherwise not possible, such as avoiding operations with incompatible data types, at compile time.Some languages (I use Visual FoxPro) have only a single variable type, "variant". That is, the variable can actually change from one type to another at runtime, and it is stored in a way that allows this type-changing - precisely the "variant" type. Some versions of Basic have a "variant" type too. Unfortunately, that way many errors don't get caught during compilation, and will only appear later, at runtime. If you use a language that allows both specific types and variant types, better use the variant type sparingly, because of this.


What is an union in C language?

A "union declaration" specifies a set of variable values and, optionally, a tag naming the union. The variable values are called "members" of the union and can have different types. Unions are similar to "variant records" in other languages.


Is a dominant or recessive variant of a particular gene?

A dominant variant of a gene is expressed when only one copy of the variant is present, masking the recessive variant. In contrast, a recessive variant is expressed only when two copies of the variant are present.


What does variant of Alice mean?

variant of alice


What is a z-variant?

A z-variant is a shape variant of a Han character, encoded for historical reasons.


What is the ethnicity and or country of Origin of surname Scanlan?

ScanlanIrish: variant spelling of Scanlon.Source: Ancestry.comScanlanIrish: variant spelling of Scanlon.Source: Ancestry.comScanlanIrish: variant spelling of Scanlon.Source: Ancestry.comScanlanIrish: variant spelling of Scanlon.Source: Ancestry.comScanlanIrish: variant spelling of Scanlon.Source: Ancestry.comScanlanIrish: variant spelling of Scanlon.Source: Ancestry.com


When was Variant - magazine - created?

Variant - magazine - was created in 1984.


What is the country of origin for the surname Hillmer?

North German: variant spelling of Hilmer.Source: Ancestry.comNorth German: variant spelling of Hilmer.Source: Ancestry.comNorth German: variant spelling of Hilmer.Source: Ancestry.comNorth German: variant spelling of Hilmer.Source: Ancestry.comNorth German: variant spelling of Hilmer.Source: Ancestry.comNorth German: variant spelling of Hilmer.Source: Ancestry.com


When was VW Golf Variant created?

Volkswagen Golf Variant was created in 1993.


What is the orgin of the surname Lecates?

English: variant of Lecatt, which is most probably a variant of Leggett


What is class varient?

Variant is a data type in certain programming languages, particularly Visual Basic and C++ when using the Component Object Model.In Visual Basic (and Visual Basic for Applications) the Variant data type is a tagged union that can be used to represent any other data type (for example, integer, floating-point, single- and double-precision, object, etc.) except fixed-length string type and record types. In Visual Basic any variable, not declared explicitly or the type of which is not declared explicitly, is taken to be a variant.


What is the variant spelling of all right?

"Alright" is not a word. The correct form, not a variant, is "all right."