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Topic: Switch statement

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	PHP Tutorial
		The switch Statement is very similar or an alternative to the if...else if...else commands.
		Switch is normally used when you are finding an exact (equal) result instead of a greater or less than result.
		The switch statement is used to compare the value of $number against other values.
	msconline.maconstate.edu /tutorials/PHP/PHP04/php04-02.php (475 words)

	The switch Statement
		The break statement is used to stop execution and transfer control to the statement after the switch statement.
		Without a break statement, every statement from the matched case label to the end of the switch, including the default, is executed.
		The break statement after capa++ terminates execution of the switch statement body and control passes to the while loop.
	msdn.microsoft.com /en-us/library/k0t5wee3.aspx (575 words)

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	The C# switch Statement - Techotopia
		Following on from the case line are the C# statements which are to be executed in the event of the value matching the case constant.
		These statements are used either to break out of the switch statement when a match is found, goto a specific location in the code or skip any remaining code in a loop and begin the next iteration.
		If the switch statement is part of a loop, the continue statement will cause execution to return immediately to the beginning of the loop, bypassing any subsequent code yet to be executed in the current loop iteration.
	www.techotopia.com /index.php/The_C_Sharp_switch_Statement (837 words)

	Switch
		Specifically, the concept of "matching" between the switch value and the various case values need not be restricted to numeric (or string or referential) equality, as it is in other languages.
		statement takes a single scalar argument (in mandatory parentheses if it's a variable; otherwise the parens are optional) and selects the appropriate type of matching between that argument and the current switch value.
		statement will not require switch or case values to be parenthesized.
	kobesearch.cpan.org /htdocs/perl/Switch.html (1291 words)

	online C++ tutorial: Branching Statements (if, else, switch)
		In an if statement, condition is a value or an expression that is used to determine which code block is executed, and the curly braces act as "begin" and "end" markers.
		The switch statement allows a programmer to compound a group of if statements, provided that the condition being tested is an integer.
		This switch statement will write "we're first" if the variable place is equal to 1, it will write "we're second" if place is equal to 2, and will write "we're not first or second" if place is any other value.
	www.intap.net /~drw/cpp/cpp04_02.htm (699 words)

	I’d Rather switch Than Fight! » Yahoo! User Interface Blog
		If the switch were designed differently, where you needed to include a continue or some other keyword in order to turn on fall-through, then the only times when a fall-through would happen is when the programmer intended it to happen.
		Forgetting for a second that it’s just a branch statement, and that no matter the language all loop and if/switch/case/whatever statements get compiled down to branches, sometimes jumping out of hairy nested constructs is easier to figure out with a GOTO than with a series of labeled break statements.
		JavaScript saw fit to change switch (compared to the C version) by not allowing the case statements to be embedded in interior statements (as in Duff’s device), but mysteriously didn’t take to opportunity to remove fall through.
	yuiblog.com /blog/2007/04/25/id-rather-switch-than-fight (1511 words)

	The switch Statement (The Java™ Tutorials > Learning the Java Language > Language Basics)
		statement allows for any number of possible execution paths.
		statement evaluates its expression and executes the appropriate
		statement can make decisions based only on a single integer or enumerated value.
	java.sun.com /docs/books/tutorial/java/nutsandbolts/switch.html (675 words)

	Javanotes 5.0, Section 3.6 -- The switch Statement
		A switch statement allows you to test the value of an expression and, depending on that value, to jump directly to some location within the switch statement.
		As the final case in a switch statement you can, optionally, use the label "default:", which provides a default jump point that is used when the value of the expression is not listed in any case label.
		In this case, it sees a switch statement in which the type of expression is int and in which the cases that are covered are 0, 1, and 2.
	math.hws.edu /javanotes/c3/s6.html (1337 words)

	Python Zone » Python switch statement
		Switch statements are far more flexible than the dictionary type for executing arbitrary code.
		A large part of the power of switch statements is that a matching case is run AND so is every case after the matching case until a break statement is encountered.
		Additionally, switch statements have a default case which runs if there was no matching case or if there was no break after a matching case.
	www.mustap.com /pythonzone_post_224_python-switch-statement (369 words)

	PHP Switch Statement, Learn PHP Switch Statement
		The Switch statement in PHP is used to perform one of several different actions based on one of several different conditions.
		If you want to select one of many blocks of code to be executed, use the Switch statement.
		The switch statement is used to avoid long blocks of if..elseif..else code.
	www.codedcode.com /php/php-switch.asp (208 words)

	Why the Switch Statement sucks \| geeks not nerds
		C is a curly bracket langauge, I find that the switch statement does not follow this style, instead it resembles something more along the lines of Basic or Pascal.
		If a switch statement is not applicable to your application or needs go use an if/elseif statement as thats what they`re there for, bitching about how it is fundamentaly wrong is kind of silly and if you can`t grasp such a simple concept and uses of it you shouldn`t be commenting on it.
		Furthermore, switch statements aren't quite equivalent to if/else statements anyhow - switch statements are guaranteed to only evaluate the switch expression one time, while if/else statements will evaluate it each time - this is a crucial difference if the expression itself has side-effects.
	www.geeksnotnerds.com /node/110 (2036 words)

	Optimizing C and C++ Code
		Also, performance of a jump table based switch statement is independent of the number of case entries in switch statement.
		In such cases nested switch statements can be used to get the same effect.
		Put frequently occurring case labels into one switch and keep the rest of case labels into another switch which is the default leg of the first switch.
	www.eventhelix.com /RealtimeMantra/Basics/OptimizingCAndCPPCode.htm (1735 words)

	Java: switch Statement - Overview
		The switch statement executes the case corresponding to the value of the expression.
		This is the equivalent of the "else" for the switch statement.
		statement causes execution to exit to the statement after the end of the switch.
	www.leepoint.net /notes-java/flow/switch/switch-general.html (577 words)

	C to Assembly: if-else Statement and Switch Statement Code Generation
		In this implementation, the time taken in the switch statement is much less than the time taken in an equivalent if-else-if statement cascade.
		Also, the time taken in the switch statement is independent of the number of case legs in the switch statement.
		If the switch statement has a very large number of case legs and the values are widely distributed, some compilers use binary search to select the case leg.
	www.eventhelix.com /RealtimeMantra/Basics/CToAssemblyTranslation3.htm (661 words)

	8.7.2 The switch statement (C#)
		The switch statement selects for execution a statement list having an associated switch label that corresponds to the value of the switch expression.
		Unlike C and C++, execution of a switch section is not permitted to "fall through" to the next switch section, and the example
		Within a switch block, the meaning of a name used in an expression context must always be the same (Section 7.5.2.1).
	msdn.microsoft.com /en-us/library/aa664749(VS.71).aspx (727 words)

	Switch Statements Smell
		Switch Statements (AKA "Case Statements") is a canonical CodeSmell (at least, in ObjectOriented code) described in RefactoringImprovingTheDesignOfExistingCode.
		Because those statements are denoted explicitly in the class graph, the developer is able to accomplish such changes directly by changing the class graph (with minimal changes to the embedded code) - precisely because there are NOT switch statements and their equivalents embedded in the code.
		Switch statements, if then else sequences, and the degenerate case of a single if then else, are necessary operations because some decisions need to be based upon run time data and cannot be made at design time.
	c2.com /cgi/wiki?SwitchStatementsSmell (11559 words)

	Speed Test: Switch vs If-Else-If :: BlackWasp Software Development
		The switch statement is less flexible than the if-else-if ladder but is generally considered to be more efficient.
		This test was designed to compare the execution time of the switch statement and the if-else-if ladder code structure when used to select a match from a discrete series of values.
		However, because each case within a switch statement does not rely on earlier cases, the compiler is able to re-order the testing in such a way as to provide the fastest execution.
	www.blackwasp.co.uk /SpeedTestIfElseSwitch.aspx (692 words)

	Switch Statement
		Also, since switch statements are so common, they tend not to be just syntactic sugar, but directly supported right down to the hardware.
		Switch statements are generally viewed as a CodeSmell in object-oriented environments because they pessimize message dispatch, which a good OO environment makes faster than the corresponding switch.
		Even CeeLanguage imposes some overhead to setup the switch statement, and it might be interesting measure that overhead in comparison to a straight procedure call on each of the resulting branches.
	c2.com /cgi/wiki?SwitchStatement (2203 words)

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