breakpoints

问题 I'm trying to find what is changing the height/width of an attribute in IE9 only. There is a Firebug feature "break on attribute change" https://getfirebug.com/wiki/index.php/Break_On_... I've included the firebug-lite script in my code. https://getfirebug.com/firebuglite But right clicking on an element in firebug lite doesn't bring up the context menu unfortunately :( Does firebug lite support "break on attribute change"? Or is there an alternative method? Thanks, Russ 回答1: Woohoo!! Found

问题 As a sub-question to this, I want to know, since Qt5 is distributed with full source code, is it possible to set up debugger break-points inside Qt itself ? Is there a symbol file shipped with Qt5 for the binary build? Do I have to build my own Qt to do this? What is the fastest way to have breakpoints inside Qt5 working with QtCreator on Ubuntu? 回答1: You need to configure and build qt yourself with debug symbols. ( -debug ) Then in QtCreator you can go to Options > Debugger > General and "

问题 My C++ project folder structure is as shown below. I am trying to debug the program using gdb in my linux machine. My main function is in g2o.cpp which is inside g2o_cli folder. I am able to put breakpoints in the files in this folder by break g2o.cpp:<line_number> But I am not able to put breakpoints in the files in other folders, for example, a file optimizer.cpp in the 'core' folder. I tried giving the absolute path from my home directory break ~/HOME/g2o/core/optimizer.cpp:<line_number>

问题 Can breakpoints be used in interrupt service routines (ISRs)? 回答1: Yes - in an emulator . Otherwise, no. It's difficult to pull off, and a bad idea in any case. ISRs are (usually) supposed to work with the hardware, and hardware can easily behave very differently when you leave a gap of half a second between each instruction. Set up some sort of logging system instead. ISRs also ungracefully "steal" the CPU from other processes, so many operating systems recommend keeping your ISRs extremely

问题 Recently I have upgraded to Jest 23.x.x, using the same VSCode debugging configuration as in Jest 22.x.x, I get weird behaviors: breakpoints are moved, and you cannot really debug (not hitting the real line of code). If I downgrade to 22 everything works as expected. Is there any breaking change or update from 22 to 23 to be aware of for this case? My vscode debug launch configuration { "version": "0.2.0", "configurations": [ { "type": "node", "request": "launch", "name": "Jest All", "program

问题 I have a huge code base and I want to break on the error "fatal error: unexpectedly found nil while unwrapping an Optional value" What is the best approach to do that? I tried adding both: (In the breakpoints sub-window) "Add Swift Error Breakpoint" "Add Exception Breakpoint" But that didn't do it. Does that mean that the nil was in some framework code and not my code? 回答1: Unwrapping optionals gets translated by the compiler into calls to _getOptionalValue(), which calls _preconditionFailure

问题 I'd really like to get deeper into my php scripts and use things like breakpoints, as I'm doing with JS with firebug. I'd like to know more about what techniques people use, and some solid examples of how to debug with breakpoints a php project. Thing's I'd like to be able to see.. Properties of objects Class hierarchies.. where objects are coming from, file names etc.. (useful in ZF/Magento) Variables, types, content.. headers, post data, get data, session data, cookies.. Network /

问题 I found this solution: Debugging automatic properties I tried to work with it, but it doesnt do anything. Does this solution to break at the setter still work? As far as I've seen, all i have to do is creating a Breakpoint. My class has the name RecordCompetitionTitleBuilderIndividual, the Property EventData. So I just set the Breakpoint at something like this: RecordCompetitionTitleBuilderIndividual.set_EventData(null) But this doesnt do anything. Am I doing something wrong, or is there a

问题 I found this solution: Debugging automatic properties I tried to work with it, but it doesnt do anything. Does this solution to break at the setter still work? As far as I've seen, all i have to do is creating a Breakpoint. My class has the name RecordCompetitionTitleBuilderIndividual, the Property EventData. So I just set the Breakpoint at something like this: RecordCompetitionTitleBuilderIndividual.set_EventData(null) But this doesnt do anything. Am I doing something wrong, or is there a

问题 When I call stop on my AVAudioRecorder instance XCode stops at a breakpoint. However, no exception comes up and I don't have my own breakpoint set there. I do have an "All Exceptions" breakpoint setup. I hit continue and the app runs fine - no message in the console. What's going on? 回答1: It is the All Exceptions breakpoint. AV Foundation is throwing an exception and also catching it, so no harm, no foul (which is why the app can resume without a problem) - but you are set to break when that