Using Namespaces

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Using (Namespaces)

Brings namespace symbols into the current scope

Syntax

Using identifier [, identifier [, ...] ]

Parameters

• identifier

Description

The Using command allows all symbols from a given namespace to be accessed without the namespace's name prefix. Unlike C++ but like C#, the Namespace keyword is not needed after Using, because individual symbols cannot be inherited from a namespace.

Using is allowed in namespaces and procedures only (not in type or union or enum declarations).

Inheriting a whole namespace can save typing, but sometimes some meaning of the code can be lost, and conflicts with other symbols could be created.

Remarks

Differences from QB

• QB had the Using keyword, but for other purposes. Namespaces did not exist in QB.

See also

• Print Using
• ? Using
• Palette Using
• Namespace

Examples

Namespace Sample

    Type T

        x As Integer

    End Type

End Namespace

'' Just using the name T would not find the symbol,

'' because it is inside a namespace.

Dim SomeVariable As Sample.T

'' Now the whole namespace has been inherited into

'' the global namespace.

Using Sample

'' This statement is valid now, since T exists

'' without the "Sample." prefix.

Dim OtherVariable As T

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Category: Modularizing
Kind: keyword

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Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.