Error Previously Used Here

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Duplicate Case Value Arduino

Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Macro to avoid duplicate case value up vote 2 down vote favorite I am using a switch expression in C in order to evaluate the errno variable. According to the man page for send(): EAGAIN or EWOULDBLOCK The socket is marked nonblocking and the requested operation would block. POSIX.1-2001 allows either error to be returned for this case,and does not require these constants to have the same value, so a portable application should check for both possibilities. Since my application must be portable, I have to do: switch (errno): case EWOULDBLOCK: case EAGAIN: //do whatever break; case EINTR: //... The problem is that for some platforms, EWOULDBLOCK and EAGAIN do have the same value, so when compiling I get: connection.cxx:190:5: error: duplicate case value case EWOULDBLOCK: ^ connection.cxx:189:5: error: previously used here case EAGAIN: ^ So I thought I could use a macro macro that depending on whether EWOULDBLOCK and EAGAIN have the same value or not for the platform adds that line to the code or omits it. Any idea on how to write that macro? c macros share|improve this question asked Dec 16 '14 at 16:14 user2891462 475518 add a comment| 2 Answers 2 active oldest votes up vote 8 down vote accepted Something like: #if EAGAIN != EWOULDBLOCK case EAGAIN: #endif case EWOULDBLOCK: edit: however if you're going to have many switch switch statements, a mac

Downloads Staff Online Users More Activity All Activity My Activity Streams Unread Content Content I Started Search More Store Orders Manage Purchases My Details More Support Support More Shoutbox More More All Activity Home Metin2 Questions and Answers switch c++ Sign in to follow this Followers 1 switch c++ Started by Minion, January 30, 2015 5 posts in this topic Minion 37 Friendly Members 37 144 posts Posted January 30, 2015 case WEAPON_SWORD: case COSTUME_SWORD:     dwMode = MOTION_MODE_ONEHAND_SWORD;     break;   char.cpp:2797: error: duplicate case value char.cpp:2785: error: previously used here   ???   Share this post Link to post Share on other sites ionutxp 44 Friendly Members 44 http://stackoverflow.com/questions/27509061/macro-to-avoid-duplicate-case-value 58 posts Posted January 30, 2015 Maybe WEAPON_SWORD and COSTUME_SWORD points to the same integer value. It will be like: switch (number) {     case 1:     case 1:     .................. } Share this post Link to post Share on other sites pbuzz 28 Friendly Members 28 124 posts Location: Romania Posted February 3, 2015   case WEAPON_SWORD: case COSTUME_SWORD:     dwMode = MOTION_MODE_ONEHAND_SWORD;     break;   char.cpp:2797: error: duplicate case value char.cpp:2785: https://metin2dev.org/board/index.php?/topic/5180-switch-c/ error: previously used here   ???   case WEAPON_SWORD:     break; case COSTUME_SWORD:     dwMode = MOTION_MODE_ONEHAND_SWORD;     break; Share this post Link to post Share on other sites hachiwari 31 Friendly Members 31 121 posts Posted February 3, 2015 Maybe case WEAPON_SWORD: case COSTUME_SWORD: { dwMode = MOTION_MODE_ONEHAND_SWORD; break; } Share this post Link to post Share on other sites Isolation 30 Neutral Members 30 17 posts Posted February 3, 2015 char.cpp:2797: error: duplicate case value char.cpp:2785: error: previously used here   So, you better give us the whole switch statement. Otherwise nobody can help you. Duplicate case value should explain everything. But it's not only these two lines. Look at the error code. Line 2797 and 2785 are affected. So guess what? We need the whole switch statement. Share this post Link to post Share on other sites Create an account or sign in to comment You need to be a member in order to leave a comment Create an account Sign up for a new account in our community. It's easy! Register a new account Sign in Already have an account? Sign in here. Sign In Now Sign in to follow this Followers 1 Go To Topic Listing Questions and Answers Recently Browsing 0 members No registered users viewing this page. All Activity Home Metin2 Questions and Answers switch c++ Contact

will not be smooth at all times. Especially when browsing the net, it is very possible for you to come across various errors which you have no idea about. Error Duplicate Case Value Error Previously Used Here http://tomdownload.net/software/error-duplicate-case-value-error-previously-used-here/ are totally normal to happen in your personal computer. This only informs you that http://forum.arduino.cc/index.php?topic=247382.0 you should take action and there's no need to panic. The first step that you must take is to know the real cause of the existing issue. This way, you are preventing the issue from getting worse. Every specific Error Duplicate Case Value Error Previously Used Here has its very own unique reasons. At times, errors happen duplicate case due to defective drivers or incompatible application. Installing a new operating system is the primary resort of some people as they don�t want to bother themselves about dealing with the issue themselves. But the fact is, trying to fix the problem alone is valuable. Below are some of the errors and fixes you must know about. Blue Screen of Death (BSoD) This Error Duplicate Case Value Error Previously Used Here does not duplicate case value choose an operating system to attack, it can happen to all even in the most up-to-date ones. Simple computer procedures such as ESC and Ctrl + Alt + Del will not help to get rid of this error. Though many reasons may cause this error, the primary problem is a recent change in the software or hardware state of the computer. The great thing to do is open the computer in safe mode so that you can uninstall the software recently added, also take away any hardware devices attached to it. Low Virtual Memory You have big possibilities of experiencing this problem if you have just installed an app that needs huge memory. One more reason for this is your low RAM space. In case you have insufficient RAM space, you will need to buy more RAM chips. On the other hand, increasing your pagefile size will do if you think you could still work on your RAM. Enter Control Duplicate Entry Error In Mysql Panel, click System and find Security. Hover your computer mouse on Advanced system settings and go to the Advanced tab and settings. Afterwards, increase your pagefile up to two times your memory. DLL Files are Lost There are times that we encounter missing file needed for some prog

> Programming Questions > Switch Case with a range? Print Go Down Pages: [1] 2 Topic: Switch Case with a range?(Read 2329 times) previous topic - next topic chrisnet Full Member Posts: 169 Karma: 2[add] Switch Case with a range? Jun 16, 2014, 06:34 pm Could I turn this to a switch caseCode: [Select]
// Channel 5 is (0-255) 0-5=off, 6-10=runR, 11-15=runG, 16-20=runBE, 21-25=runW
// 26-30=runFR, 31-35=runFG, 36-40=runFB, 41-45=runFW, 46-50=runRGB, 51-55=runFRGB, 56-60-runFRGBW, 61-65=runFADE

if (DMXSerial.read(FIVE) >= 0 && DMXSerial.read(FIVE) <= 5 ){
runBlack();
}
else if (DMXSerial.read(FIVE) >= 6 && DMXSerial.read(FIVE) <= 10 ){
runR();
}
//ECT.............
Maybe turn that to something like thisCode: [Select]
int var = DMXSerial.read(FIVE);

switch (var) {
case (0 to 5):
runBlack();
break;
case (6 to 10):
runR();
break;
case (11 to 15):
runG();
break;
default:
// if nothing else matches, do the default
// default is optional
break;
}
AWOL Global Moderator Brattain Member Posts: 40,590 Karma: 1140[add] I don't think you connected the grounds, Dave. Re: Switch Case with a range? #1 Jun 16, 2014, 06:35 pm Code: [Select]case 0...5: "Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.Do not send technical questions via personal messaging - they will be ignored. chrisnet Full Member Posts: 169 Karma: 2[add] Re: Switch Case with a range? #2 Jun 16, 2014, 06:41 pm Quote from: AWOL on Jun 16, 2014, 06:35 pmCode: [Select]case 0...5:I get thiserror: too many decimal points in number chrisnet Full Member Posts: 169 Karma: 2[add] Re: Switch Case with a range? #3 Jun 16, 2014, 06:48 pm This compilesCode: [Select]
case 0 || 1 || 2 || 3 || 4 || 5:
runBlack;
break;
Would that be Ok or is there a better way? DavidOConnor Sr. Member Posts: 395 Karma: 45[add] Re: Switch Case with a range? #4 Jun 16, 2014, 06:54 pm How about this?Code: [Select]
switch (v