Boolean Expressions - Revision history

Andrew Branscom at 01:11, 3 December 2015

2015-12-03T01:11:04Z

Andrew Branscom at 23:08, 28 November 2015

2015-11-28T23:08:28Z

Andrew Branscom at 23:05, 28 November 2015

2015-11-28T23:05:12Z

Andrew Branscom at 01:11, 28 December 2014

2014-12-28T01:11:22Z

Andrew Branscom at 00:58, 31 October 2013

2013-10-31T00:58:07Z

Andrew Branscom at 23:31, 30 October 2013

2013-10-30T23:31:31Z

Andrew Branscom at 23:30, 30 October 2013

2013-10-30T23:30:50Z

Andrew Branscom: Created page with "Originally posted on the SCI Programming forum by Gumby Boolean (true/false) expressions are handled as one might expect, with one subtlety. A ..."

2013-10-30T23:29:01Z

Created page with "Originally posted on the SCI Programming forum by Gumby Boolean (true/false) expressions are handled as one might expect, with one subtlety. A ..."

New page

Originally posted on the [[scipf:SCI Programming|SCI Programming]] forum by [[Gumby]]

Boolean (true/false) expressions are handled as one might expect, with one subtlety. A value of 'true' is actually the result any expression evaluating to a non-zero value. I believe this is handled the same as most programming languages, but thought it was worth noting anyway.

To illustrate:
<div class="CodeBlockHeader">Code:</div>
<syntaxhighlight lang="sci">
(var x)

= x 0
(if(x) // evaluates to false
Print("True: x is non-zero")
)(else
Print("False: x is zero") // this will be output
)

= x 1
(if(x) // evaluates to true
Print("True: x is non-zero") // this will be output
)(else
Print("False: x is zero")
)

= x 9387
(if(x) // also evaluates to true
Print("True: x is non-zero") // this will be output
)(else
Print("False: x is zero")
)
</syntaxhighlight>

← Older revision		Revision as of 01:11, 3 December 2015
Line 34:		Line 34:
	[[Category:Examples]]		[[Category:Examples]]
	[[Category:Syntax]]		[[Category:Syntax]]
		+	[[Category:Conditionals]]

← Older revision		Revision as of 00:58, 31 October 2013
Line 1:		Line 1:
−	Originally posted on the [[scipf:~~SCI Programming~~\|SCI Programming]] forum by [[Gumby]]	+	Originally posted on the [[scipf:topic,646.html\|SCI Programming]] forum by [[Gumby]]

	Boolean (true/false) expressions are handled as one might expect, with one subtlety. A value of 'true' is actually the result any expression evaluating to a non-zero value. I believe this is handled the same as most programming languages, but thought it was worth noting anyway.		Boolean (true/false) expressions are handled as one might expect, with one subtlety. A value of 'true' is actually the result any expression evaluating to a non-zero value. I believe this is handled the same as most programming languages, but thought it was worth noting anyway.

← Older revision		Revision as of 23:31, 30 October 2013
Line 33:		Line 33:

	[[Category:Examples]]		[[Category:Examples]]
−	[[Category:~~SCI~~ Syntax]]	+	[[Category:Syntax]]

← Older revision		Revision as of 23:30, 30 October 2013
Line 29:		Line 29:
	)		)
	</syntaxhighlight>		</syntaxhighlight>
		+
		+
		+
		+	[[Category:Examples]]
		+	[[Category:SCI Syntax]]

@@ Line 5: / Line 5: @@
 To illustrate:
 <div class="CodeBlockHeader">Code:</div>
-<syntaxhighlight lang="c">
+<syntaxhighlight lang="sci">
 (var x)

@@ Line 16: / Line 16: @@
 = x 1
-(if(x)  // evaluates to true
+(if(x)    // evaluates to true
      Print("True: x is non-zero") // this will be output
 )(else
@@ Line 23: / Line 23: @@
 = x 9387
-(if(x) // also evaluates to true
+(if(x)    // also evaluates to true
      Print("True: x is non-zero") // this will be output
 )(else