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Breaks

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C Christian Graus

Yep, they enforced break because otherwise the code is hard to read, and then they encouraged goto. Brilliant.

Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
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Jim Crafton

wrote on last edited by

#28

Must be the left over VB influence...

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E Eytukan

Do you think the "break;" [C++] command is really needed at the end of every case statement? I've never been in a situation where I'd want the control to pass on to the next case after satisfying a particular case. You know I missed to put a "break;" and it resulted in a big chaos :doh:.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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Todd Smith

wrote on last edited by

#29

what about:switch (something) { case A: case B: case C: DoSomething(); break; case D: case E: case F: DoSomethingElse(); break; .... }

Todd Smith
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E Eytukan

Do you think the "break;" [C++] command is really needed at the end of every case statement? I've never been in a situation where I'd want the control to pass on to the next case after satisfying a particular case. You know I missed to put a "break;" and it resulted in a big chaos :doh:.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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Member 96

wrote on last edited by

#30

I've used fallthrough many times over the years so yes I'd say it's required.
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E Eytukan

Do you think the "break;" [C++] command is really needed at the end of every case statement? I've never been in a situation where I'd want the control to pass on to the next case after satisfying a particular case. You know I missed to put a "break;" and it resulted in a big chaos :doh:.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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Joe Woodbury

wrote on last edited by

#31

I have used fall throughs, though I've long felt the proper implementation would be that a new case statement implies break and to fall through you write fallthrough;. (I've also wanted the equivalent of "reswitch"--that is; go back and reevaluate the expression again.)

Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke
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E Eytukan

Do you think the "break;" [C++] command is really needed at the end of every case statement? I've never been in a situation where I'd want the control to pass on to the next case after satisfying a particular case. You know I missed to put a "break;" and it resulted in a big chaos :doh:.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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Hans Dietrich

wrote on last edited by

#32

PC-Lint will catch missing break statements, and a lot of other common coding oversights.
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M Michael Dunn

I've probably coded a fall-through like that maybe twice in my life. Not counting those times where I goofed and forgot the break. ;) (That shows what I think is a design mistake in C - the default behavior should be no fall-through between cases, since that's what programmers will want the vast majority of the time. Oh well.) I was just looking up the C# spec and C# requires break statements even though the behavior is no fall-through. Bwa? :confused:

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Stephen Hewitt

wrote on last edited by

#33

Not only that but a fall-though is still supported but requires the use of the goto statement. I would have preferred an explicit “fall-through” keyword.

Steve
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J Joe Woodbury

I have used fall throughs, though I've long felt the proper implementation would be that a new case statement implies break and to fall through you write fallthrough;. (I've also wanted the equivalent of "reswitch"--that is; go back and reevaluate the expression again.)

Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke
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Eytukan

wrote on last edited by

#34

Very good idea.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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H Hans Dietrich

PC-Lint will catch missing break statements, and a lot of other common coding oversights.
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Eytukan

wrote on last edited by

#35

Thanks. It will be really required if we have switch-case blocks that contains 1000s of lines. will suggest that to my boss.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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T Todd Smith

what about:switch (something) { case A: case B: case C: DoSomething(); break; case D: case E: case F: DoSomethingElse(); break; .... }

Todd Smith
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Eytukan

wrote on last edited by

#36

You mean, if it's case "A", it should perform A,B & C. if it's case "C", it directly comes to "C". Got it. I get the picture now!. :jig: thanks :beer:. It has it's use but as joe said above , it will really nice if we have something called fallthrough to explicitly mean it.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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J Joe Woodbury

I have used fall throughs, though I've long felt the proper implementation would be that a new case statement implies break and to fall through you write fallthrough;. (I've also wanted the equivalent of "reswitch"--that is; go back and reevaluate the expression again.)

Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke
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Eytukan

wrote on last edited by

#37

http://www.codeproject.com/lounge.asp?msg=1879599#xx1879599xx[^]

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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V Vikram A Punathambekar

VuNic wrote:

Do you think the "break;" [C++] command is really needed at the end of every case statement?

No. I think the default behavior is wrong here.

VuNic wrote:

I've never been in a situation where I'd want the control to pass on to the next case after satisfying a particular case.

I have. [edit]I make sure it's commented prominently.[/edit]

Cheers, Vikram.

"...we are disempowered to cultivate in their communities an inclination to assimilate to our culture." - Stan Shannon.
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Eytukan

wrote on last edited by

#38

Someone didn't like you editing your message? :wtf:. Never mind, balanced ;)

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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C Christian Graus

Yep, they enforced break because otherwise the code is hard to read, and then they encouraged goto. Brilliant.

Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog
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Eytukan

wrote on last edited by

#39

Christian Graus wrote:

Yep, they enforced break because otherwise the code is hard to read, and then they encouraged goto. Brilliant.

:laugh:

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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E Eytukan

Do you think the "break;" [C++] command is really needed at the end of every case statement? I've never been in a situation where I'd want the control to pass on to the next case after satisfying a particular case. You know I missed to put a "break;" and it resulted in a big chaos :doh:.

Dario: How is "directory" in French? (I mean a file system directory). John Simmons: "zee file holdaire thingie"
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Smith

wrote on last edited by

#40

Wow yet another case with the switch case :-D

:beer:
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