I just used a goto!
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The important thing with
gotois knowing when not to use it - which is most of the time. :laugh:Gotohas its place, but if you can use a structured loop or branch instead then your code is generally cleaner and more maintainable. But very occasionally, using agotomakes your code cleaner or much more efficient and (provided it's well documented) isn't a problem. It's a problem when it's used because they can: and teachers who introduce it early should be hung, drawn, and quartered (and I don't mean "well hung", "sketched", and "given an apartment").Sent from my Amstrad PC 1640 Never throw anything away, Griff Bad command or file name. Bad, bad command! Sit! Stay! Staaaay... AntiTwitter: @DalekDave is now a follower!
OriginalGriff wrote:
teachers who introduce it early should be hung, drawn, and quartered (and I don't mean "well hung", "sketched", and "given an apartment").
My CS teacher introduced them early. However it was more of a "Here is the
gotostatement, here is how it can go horribly wrong, and that is why you should never use it again... ever. If you do, you will fail whatever assignment it was in." sort of way. While it was a bit over dramatic, she did follow up with how to better handle branching/looping logic without them. -
The only time "goto" is warranted is if in a nested structure where to accomplish the code control, a flag would need to be set and then checked more than once by the control statements within which this decision to break out is needed. I think I have used it 3 times, and all times, I gave a very good comment as to why it was the proper choice.
goto is NOT the enemy, it's only when it's used wrongly. but also ... contrary to popular belief disguising it fixes nothing ... if you really need to GOTO, just do it - hiding it only increases the bullshit level. unfortunatelly, there are teachers that tell the kids "GOTO is bad," but then "to do the same thing..." they then go on and teach the kids how to disguise them, i.e. instead use THROW, or stick the [inner] code in a method and return early (i.e. still in an indefinite state). ffs, really! I've got no problems with goto, but I do have issues with (1) shit code, and even more (2) attempts to hide shit code
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Aw man... you can't just drop that on us and not show us the code! That's just mean!!! :((
Mm.. it took me 2 hours to write the function.. that doesn't have goto in it in the end! :laugh: To be fair both the function was complicated and I was distracted! ;P
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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Why not use them? Sometimes they make sense. Spaghetti code is spaghetti code regardless whether it uses classes, is structured, or just plain crap.
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Why not use them? Sometimes they make sense. Spaghetti code is spaghetti code regardless whether it uses classes, is structured, or just plain crap.
Coming from a embedded back ground, GOTO maps directly to JMP! write assembly without JMP. Like you said I battled with object oriented code that is c*ap but well structured. I like anything don't blame the tools, blame the tool using the tool! ;)
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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Coming from a embedded back ground, GOTO maps directly to JMP! write assembly without JMP. Like you said I battled with object oriented code that is c*ap but well structured. I like anything don't blame the tools, blame the tool using the tool! ;)
I have seen some terrible C++ code, the worst was a child of a parent, instantiated as the parent. SO child * myclass = new parent. WTF! Which frigging function is going to get called, the base class or the overridden one! I wanted to punch the person who wrote that.
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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Find In Files / Current Project / "goto" Matching lines: 1254 it's common in C, as it's the cleanest way to handle error conditions.
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I think the only time that exception handling should be used is when the current code section does not have any control over the code that is throwing the exception - i.e., it is preferable to check and control something than to rely on an exception that simply does a goto the catch branch.
I can agree with that. I had the misfortune of having to deal with an automation systems framework that was essentially a state machine library and it changed states by throwing an exception. I thought it was incredibly stupid. This framework was spreading throughout one division of a customer until someone finally pulled their head out and asked what is this pile you have subjected us to? This particular customer joined my very short list of the worst ones I have ever dealt with and I refuse to buy any of their products to this day.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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In high level languages... Ok, maybe you have more possibilities and you should avoid using goto's But try to programm in Assembly, in PLC LAD or other similar "low" level languages without it. It is like many other things. Use it wisely and there would be no problems. Abuse or misuse it... and you will burn in hell (or you will be damned and sent to hell by the people who inherit your code)
M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you Rating helpful answers is nice, but saying thanks can be even nicer.
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To avoid this you can put the entire code block in a try. Put the catch at the go to label and throw an exception where you call the goto. Because that’s different somehow!
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And what happens when the language you are programing in offers no try-catch-throw?
M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you Rating helpful answers is nice, but saying thanks can be even nicer.
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I think the only time that exception handling should be used is when the current code section does not have any control over the code that is throwing the exception - i.e., it is preferable to check and control something than to rely on an exception that simply does a goto the catch branch.
agreed. I'm thinking of calls to another library where it throws a specific exception after being configured properly. In that case all inputs are set to valid values but then something happens which causes the exception - network not available or something.
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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while ( true ) { ... break ... } -
while ( true ) { ... break ... }also
for (;;) { break; }
do { break; } while(0);
that's just pretending. everyone knows that break is a goto. own it!
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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Everytime, I thought I needed a goto, I found I could just put a return inthe middle of a loop. That's a more better way to make things sucky.
CQ de W5ALT
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
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Gotos are fine. Like, "I will be back in 30 minutes. I have to GOTO the store." I have to GOTO the baseball game. :thumbsup: :laugh:
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
A new .NET Serializer All in one Menu-Ribbon Bar Taking over the world since 1371!
1. Create a workflow manager using generics, interfaces, class abstraction, enums for state and continuation. 2. Break up your code into small workflow steps. 3. On each step, check for termination. 4. Or to get really fancy, return a code that says what step in the workflow to skip to. 5. If you really want to be cool, allow for async workflow steps! ;)
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Gotos are fine. Like, "I will be back in 30 minutes. I have to GOTO the store." I have to GOTO the baseball game. :thumbsup: :laugh:
Slacker007 wrote:
I have to GOTO the store
Except that's really a function call - you do intend to RETURN from the grocery store, don't you?
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows. -- 6079 Smith W.
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I know "it's bad" and I will be shun by all good developers and rich employers for a thousands years... But I look at it.. I can't find of anything better.. mm, maybe a private inner function (i.e. function inside a method).... followed by misplaced return.... mm....
A new .NET Serializer All in one Menu-Ribbon Bar Taking over the world since 1371!
:omg: :wtf: Nuke the location in which the GOTO was used, sow the glass crater with salt, and plow it in. Then scatter biological and chemical agents all around the area, making it inaccessible for 10,000 years!
Freedom is the freedom to say that two plus two make four. If that is granted, all else follows. -- 6079 Smith W.
