AmigaOS Manual: ARexx Instructions - Revision history

Janne Peräaho: Added link to ADDRESS() function.

2019-03-19T23:56:39Z

Added link to ADDRESS() function.

← Older revision		Revision as of 23:56, 19 March 2019
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	<nowiki>ADDRESS [[symbol \| string] \| [VALUE][expressions]] </nowiki>		<nowiki>ADDRESS [[symbol \| string] \| [VALUE][expressions]] </nowiki>

	This instruction specifies a host address for commands issued by the interpreter. A host address is the name of an application's message port to which ARexx commands are sent. ARexx maintains two host addresses: a current and a previous value. Whenever a new host address is supplied, the previous address is lost and the current address becomes the previous one. These host addresses are part of a program's storage environment and are preserved across internal function calls. The current address can be retrieved with the built-in function ADDRESS().		This instruction specifies a host address for commands issued by the interpreter. A host address is the name of an application's message port to which ARexx commands are sent. ARexx maintains two host addresses: a current and a previous value. Whenever a new host address is supplied, the previous address is lost and the current address becomes the previous one. These host addresses are part of a program's storage environment and are preserved across internal function calls. The current address can be retrieved with the built-in function [[AmigaOS_Manual:_ARexx_Functions#ADDRESS.28.29\|ADDRESS()]].

	The ADDRESS keyword alone interchanges the current and previous hosts. Repeated execution will toggle between the two host addresses.		The ADDRESS keyword alone interchanges the current and previous hosts. Repeated execution will toggle between the two host addresses.

Janne Peräaho at 09:00, 13 February 2019

2019-02-13T09:00:57Z

← Older revision		Revision as of 09:00, 13 February 2019
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	DO i=1 to 5		DO i = 1 TO 5
	PUSH 'echo "Line 'i'"'		PUSH 'echo "Line 'i'"'
	END		END
	</syntaxhighlight>		</syntaxhighlight>

Janne Peräaho at 08:59, 13 February 2019

2019-02-13T08:59:27Z

← Older revision		Revision as of 08:59, 13 February 2019
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	DO i=1 to 5		DO i = 1 TO 5
	IF i = 3 THEN ITERATE i		IF i = 3 THEN ITERATE i
	SAY i		SAY i
	END		END
	</syntaxhighlight>		</syntaxhighlight>

Janne Peräaho at 08:58, 13 February 2019

2019-02-13T08:58:54Z

← Older revision		Revision as of 08:58, 13 February 2019
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	IF result < 0 THEN ~~exit~~ /All done?/		IF result < 0 THEN EXIT /All done?/
	</syntaxhighlight>		</syntaxhighlight>

Janne Peräaho at 08:58, 13 February 2019

2019-02-13T08:58:22Z

← Older revision		Revision as of 08:58, 13 February 2019
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	DO i=1 to 5 /Index variable is i/		DO i = 1 TO 5 /* Index variable is i */
	SAY i		SAY i
	END i /End "i" loop/		END i /* End "i" loop */
	</syntaxhighlight>		</syntaxhighlight>

Janne Peräaho at 08:56, 13 February 2019

2019-02-13T08:56:36Z

← Older revision		Revision as of 08:56, 13 February 2019
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	DO i=1 to 5		DO i = 1 TO 5
	QUEUE 'echo "Line 'i'"'		QUEUE 'echo "Line 'i'"'
	END		END
	</syntaxhighlight>		</syntaxhighlight>

Janne Peräaho at 05:11, 13 February 2019

2019-02-13T05:11:25Z

← Older revision		Revision as of 05:11, 13 February 2019
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	DO i = 1 to limit		DO i = 1 TO limit
	IF i > 5 THEN LEAVE /Maximum iterations/		IF i > 5 THEN LEAVE /* Maximum iterations */
	END		END
	</syntaxhighlight>		</syntaxhighlight>

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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	DO hour = 0 to 23		DO hour = 0 TO 23
	DO minute = 0 to 59		DO minute = 0 TO 59
	SAY RIGHT( hour, 2, '0' ) \|\| ':' \|\| RIGHT( minute, 2, '0' )		SAY RIGHT( hour, 2, '0' ) \|\| ':' \|\| RIGHT( minute, 2, '0' )
	/* Leave both DO ranges immediately */		/* Leave both DO ranges immediately */

Janne Peräaho: Added nested ranges example

2019-02-13T05:09:48Z

Added nested ranges example

@@ Line 318: / Line 318: @@
    IF i > 5 THEN LEAVE /*Maximum iterations*/
    END
 </syntaxhighlight>

Janne Peräaho at 01:08, 11 July 2018

2018-07-11T01:08:40Z

← Older revision		Revision as of 01:08, 11 July 2018
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	<nowiki>NUMERIC {DIGITS \| FUZZ} expression NUMERIC FORM {SCIENTIFIC \| ENGINEERING}</nowiki>		<nowiki>NUMERIC {DIGITS \| FUZZ} expression NUMERIC FORM {SCIENTIFIC \| ENGINEERING}</nowiki>

	* The NUMERIC instruction sets options relating to numeric precision and format. The numeric options are preserved when an internal function is called.		The NUMERIC instruction sets options relating to numeric precision and format. The numeric options are preserved when an internal function is called.

	* The DIGITS expression option specifies the number of digits of precision for arithmetic calculations. The expression must evaluate to a positive whole number.		* The DIGITS expression option specifies the number of digits of precision for arithmetic calculations. The expression must evaluate to a positive whole number.

Janne Peräaho at 01:44, 21 June 2018

2018-06-21T01:44:50Z

← Older revision		Revision as of 01:44, 21 June 2018
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	<syntaxhighlight lang="rexx">		<syntaxhighlight lang="rexx">
	/Examples of DO/		/* Examples of DO */
	LIMIT = 20; number = 1		LIMIT = 20; number = 1
	DO i=1 to LIMIT ~~for~~ 10 WHILE number < 20		DO i=1 TO LIMIT FOR 10 WHILE number < 20
	number = i * number		number = i * number
	SAY "Iteration" i "number=" number		SAY "Iteration" i "number=" number
	END		END
	number = number/3.345; i = 0		number = number/3.345; i = 0
	DO number ~~for~~ LIMIT/5		DO number FOR LIMIT/5
	i = i + 1		i = i + 1
	SAY "Iteration" i "number=" number		SAY "Iteration" i "number=" number