System Function EM - Revision history

WikiSysop at 16:20, 16 April 2018

2018-04-16T16:20:22Z

← Older revision		Revision as of 12:20, 16 April 2018
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	<h1><~~apl~~>~~{quad}EM~~</~~apl~~> - Error Message</h1>		<h1><aplxx>⎕EM</aplxx> - Error Message</h1>
	{{BoxStart\|<apll>~~{quad}EM~~</apll>		{{BoxStart\|<apll>⎕EM</apll>
	\|Return the value of the current error message\|}}		\|Return the value of the current error message\|}}
	{{BoxEnd\|}}		{{BoxEnd\|}}

	<apll>~~{quad}EM~~</apll> is an [[ISO 13751]] standard niladic system function which returns the current error message. This is ~~an array~~ of three ~~strings~~. The first ~~element~~ is the text of the error message itself~~, in all upper case~~. The second ~~element~~ is the line typed in or the line of the function where the error occurred. The third ~~element~~ is usually a caret (^) pointing to where the error in the line shown in the second element occurred.		<apll>⎕EM</apll> is an [https://www.iso.org/standard/22817.html ISO/IEC 13751] standard niladic system function which returns the current error message. This is a character matrix of three rows. The first row is the text of the error message itself. The second row is the line typed in or the line of the function where the error occurred. The third row is usually a caret (<apll>∧</apll>) pointing to where the error in the line shown in the second element occurred.

	The format of <apll>~~{quad}EM~~</apll> is implementation dependent. Here is an example from NARS2000 on an attempt to make 2+2 = 5:<br/>		The format of <apll>⎕EM</apll> is implementation dependent. Here is an example from NARS2000 on an attempt to make <apll>2+2 = 5</apll>:
	~~<code><big>'''~~
	~~      a←2+2~~<~~br/~~>		<apll><pre>
	~~      a~~<~~br/>~~		5←2+2
	~~4<br/~~>		SYNTAX ERROR
	~~      ~~5←2+2~~<br/>~~		5←2+2
	SYNTAX ERROR~~<br/>~~		∧
	~~      ~~5←2+2~~<br/>~~		⎕EM
	~~       ~~∧~~<br/>~~		SYNTAX ERROR
	~~      a<br/>~~		5←2+2
	~~4<br/>~~		∧
	~~      ~~⎕EM~~<br/>~~		⍴⎕EM
	SYNTAX ERROR~~<br/>~~		3 12
	~~      ~~5←2+2 ~~<br/>~~		</pre></apll>
	~~       ~~∧ ~~<br/>~~
	~~'''~~</~~big~~></~~code~~>

	{{SFN\|EM}}		{{SFN\|EM}}

Paul Robinson at 10:34, 26 November 2014

2014-11-26T10:34:03Z

← Older revision		Revision as of 06:34, 26 November 2014
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	{{SFN\|EM}}		{{SFN\|EM}}
	~~{{System Variables}}~~

Paul Robinson at 00:52, 28 February 2013

2013-02-28T00:52:45Z

← Older revision		Revision as of 20:52, 27 February 2013
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	'''</big></code>		'''</big></code>

	~~<apll>~~{~~quad~~}~~EM</apll> is a ''[[niladic]]'' system function, you cannot assign a value to it.~~		{{SFN\|EM}}

	{{System Variables}}		{{System Variables}}

Paul Robinson at 21:44, 27 February 2013

2013-02-27T21:44:31Z

← Older revision		Revision as of 17:44, 27 February 2013
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	<h1><apl>{quad}EM</apl> - Error Message</h1>		<h1><apl>{quad}EM</apl> - Error Message</h1>
			{{BoxStart\|<apll>{quad}EM</apll>
			\|Return the value of the current error message\|}}
			{{BoxEnd\|}}

	<apll>{quad}EM</apll> is an [[ISO 13751]] standard niladic system function which returns the current error message. This is ~~typically~~ an array of three strings. The first element is the text of the error message itself, in all upper case. The second element is the line typed in or the line of the function where the error occurred. The third element is usually a caret (^) pointing to where the error in the line shown in the second element occurred.		<apll>{quad}EM</apll> is an [[ISO 13751]] standard niladic system function which returns the current error message. This is an array of three strings. The first element is the text of the error message itself, in all upper case. The second element is the line typed in or the line of the function where the error occurred. The third element is usually a caret (^) pointing to where the error in the line shown in the second element occurred.

	The format of <apll>{quad}EM</apll> is implementation dependent.		The format of <apll>{quad}EM</apll> is implementation dependent. Here is an example from NARS2000 on an attempt to make 2+2 = 5:<br/>
			<code><big>'''
			a←2+2<br/>
			a<br/>
			4<br/>
			5←2+2<br/>
			SYNTAX ERROR<br/>
			5←2+2<br/>
			∧<br/>
			a<br/>
			4<br/>
			⎕EM<br/>
			SYNTAX ERROR<br/>
			5←2+2 <br/>
			∧ <br/>
			'''</big></code>

	<apll>{quad}EM</apll> is a ''niladic'' function, you cannot assign a value to it.		<apll>{quad}EM</apll> is a ''[[niladic]]'' system function, you cannot assign a value to it.

	{{System Variables}}		{{System Variables}}

Paul Robinson: add 3rd item explaining usage

2013-02-22T04:49:23Z

add 3rd item explaining usage

← Older revision		Revision as of 00:49, 22 February 2013
Line 3:		Line 3:
	<apll>{quad}EM</apll> is an [[ISO 13751]] standard niladic system function which returns the current error message. This is typically an array of three strings. The first element is the text of the error message itself, in all upper case. The second element is the line typed in or the line of the function where the error occurred. The third element is usually a caret (^) pointing to where the error in the line shown in the second element occurred.		<apll>{quad}EM</apll> is an [[ISO 13751]] standard niladic system function which returns the current error message. This is typically an array of three strings. The first element is the text of the error message itself, in all upper case. The second element is the line typed in or the line of the function where the error occurred. The third element is usually a caret (^) pointing to where the error in the line shown in the second element occurred.

	The format of <apll>{quad}EM</apll> is implementation dependent.		The format of <apll>{quad}EM</apll> is implementation dependent.

			<apll>{quad}EM</apll> is a ''niladic'' function, you cannot assign a value to it.

	{{System Variables}}		{{System Variables}}

Paul Robinson: new

2013-02-22T04:48:32Z

new

New page

<h1><apl>{quad}EM</apl> - Error Message</h1>

<apll>{quad}EM</apll> is an [[ISO 13751]] standard niladic system function which returns the current error message. This is typically an array of three strings. The first element is the text of the error message itself, in all upper case. The second element is the line typed in or the line of the function where the error occurred. The third element is usually a caret (^) pointing to where the error in the line shown in the second element occurred.

The format of <apll>{quad}EM</apll> is implementation dependent.

{{System Variables}}