Harbour (programming language): Difference between revisions

Revision as of 00:37, 6 April 2020

Revision as of 17:53, 11 May 2020

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Complex Types may also be represent as literal values:

* Array: <sourcesyntaxhighlight lang=visualfoxpro enclose=none>{ "String", 1, { "Nested Array" }, .T., FunctionCall(), @FunctionPointer() }</sourcesyntaxhighlight>

* [[CodeBlock]]: <sourcesyntaxhighlight lang=visualfoxpro enclose=none>{ |Arg1, ArgN| Arg1 := ArgN + OuterVar + FunctionCall() }</sourcesyntaxhighlight>

* Hash: <sourcesyntaxhighlight lang=visualfoxpro enclose=none>{ "Name" => "John", 1 => "Numeric key", { "Nested" => "Hash" } }</sourcesyntaxhighlight>

Hashes may use ''any'' type including other Hashes as the ''Key'' for any element. Hashes and Arrays may contain ''any'' type as the ''Value'' of any member, including nesting arrays, and Hashes.

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An example procedure definition and a function call follows:

<sourcesyntaxhighlight lang="visualfoxpro">

x := Cube( 2 )

FUNCTION Cube( n )

RETURN n ** 3

</syntaxhighlight>

</source>

===Sample code===

The typical "[[hello world]]" program would be:

<sourcesyntaxhighlight lang="visualfoxpro">

? "Hello, world!"

</syntaxhighlight>

</source>

Or:

<sourcesyntaxhighlight lang="visualfoxpro">

QOut( "Hello, world!" )

</syntaxhighlight>

</source>

Or:

<sourcesyntaxhighlight lang="visualfoxpro">

Alert( "Hello, world!" )

</syntaxhighlight>

</source>

Or, enclosed in an explicit procedure:

<sourcesyntaxhighlight lang="visualfoxpro">

PROCEDURE Main()

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RETURN

</syntaxhighlight>

</source>

====OOP examples====

Main procedure:

<sourcesyntaxhighlight lang="vfp">

#include "hbclass.ch"

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RETURN

</syntaxhighlight>

</source>

Class definition:

<sourcesyntaxhighlight lang="text">

CREATE CLASS Person

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RETURN cDescription

</syntaxhighlight>

</source>

==Tools==