debugging

问题 This question already has answers here : Are python variables pointers? or else what are they? (9 answers) Closed 8 months ago . I don't understand why the variable 'y' doesn't update when I change the x? (The 'y' variable is dependent on 'x' right?) x = 5 y = x*2 print(x) print(y) x = 3 # Expect it to print '3' and '6' instead it print '3' and '10' print(x) print(y) 回答1: (The 'y' variable is dependent on 'x' right? No. Few programming languages have dependent / computed variables [0] and

问题 I am having a strange problem in Xcode. After I use insertObject:withIndex: on this NSMutableArray object, the debug window shows the wrong value for the array even though the correct values are show for the other locals and this assertion is one step away from passing. I noticed this was happening in the application I was developing, because it seemed the method on that object was not working correctly. I wrote the unit test to demonstrate the issue I was having, and expecting it to fail,

问题 I am attempting to set a breakpoint on line 37 of my project in Xcode and I want to set this using LLDB. I know that I can set this breakpoint manually by clicking in the gutter, but I want to gain a better understanding of using LLDB. How would I build off of the statement below? Is that statement even heading in the correct direction? breakpoint set --file 回答1: Reference the documentation here It looks like you can set a breakpoint in a particular file and line by using (lldb) breakpoint

问题 Currently I am analyzing a dump with WinDbg. I ran following commands (following Tess' incredible walkthrough): ~* e !clrstack Which listed me all stacks of all threads. There are 300 running threads with more or less the same stack, so I am just printing the stack of one here ... OS Thread Id: 0x107c (166) Child SP IP Call Site 2bc1e654 77c1015d [HelperMethodFrame_1OBJ: 2bc1e654] System.Threading.WaitHandle.WaitOneNative(System.Runtime.InteropServices.SafeHandle, UInt32, Boolean, Boolean)

问题 Currently I am analyzing a dump with WinDbg. I ran following commands (following Tess' incredible walkthrough): ~* e !clrstack Which listed me all stacks of all threads. There are 300 running threads with more or less the same stack, so I am just printing the stack of one here ... OS Thread Id: 0x107c (166) Child SP IP Call Site 2bc1e654 77c1015d [HelperMethodFrame_1OBJ: 2bc1e654] System.Threading.WaitHandle.WaitOneNative(System.Runtime.InteropServices.SafeHandle, UInt32, Boolean, Boolean)

问题 In a C# VisualStudio project the C# code calls a stored procedure which is referenced in the .dbml file (or the procedure is called via a SQL command from C#). Is it possible to set a break point in the stored procedure code and get a break there whenever the stored procedure is called from a C# debug session (like it is possible by right clicking on the stored procedure in the SQL Server Object Explorer an choose "Debug Procedure")? 回答1: To allow you step through a T-SQL stored procedure on

问题 In a C# VisualStudio project the C# code calls a stored procedure which is referenced in the .dbml file (or the procedure is called via a SQL command from C#). Is it possible to set a break point in the stored procedure code and get a break there whenever the stored procedure is called from a C# debug session (like it is possible by right clicking on the stored procedure in the SQL Server Object Explorer an choose "Debug Procedure")? 回答1: To allow you step through a T-SQL stored procedure on

问题 One of my projects is a System Preference Pane. With 10.11, Xcode's debugger can't debug it as I get a "can't attach to System Preferences because of System Integrity Protection". How can I debug my prefpane under 10.11, as I have done in every OS back to 10.3? 回答1: I ended up making a copy of System Preferences, called it "System Preferences (Signed)" and then signed it with my DeveloperID which replaces the old code signature and allows it to run normally without SIP getting in the way. 回答2

问题 One of my projects is a System Preference Pane. With 10.11, Xcode's debugger can't debug it as I get a "can't attach to System Preferences because of System Integrity Protection". How can I debug my prefpane under 10.11, as I have done in every OS back to 10.3? 回答1: I ended up making a copy of System Preferences, called it "System Preferences (Signed)" and then signed it with my DeveloperID which replaces the old code signature and allows it to run normally without SIP getting in the way. 回答2

问题 One of my projects is a System Preference Pane. With 10.11, Xcode's debugger can't debug it as I get a "can't attach to System Preferences because of System Integrity Protection". How can I debug my prefpane under 10.11, as I have done in every OS back to 10.3? 回答1: I ended up making a copy of System Preferences, called it "System Preferences (Signed)" and then signed it with my DeveloperID which replaces the old code signature and allows it to run normally without SIP getting in the way. 回答2