Productive Debugging. Because time is money

Transcript

1. Productive Debugging.
 Because time is money.
2. 2 @THEADORANWODO
3. 3 @THEADORANWODO
4. HI, I’M ADORA! Software Engineer, Microsoft Dev Blog, YouTube @adorahack Co-Organizer Android Ngr, GDG Ajah, Unstack @theadoranwodo 4
5. STORYTIME 5 The first computer bug was actually a moth @THEADORANWODO
7. What is a debugger ? 7 @THEADORANWODO
8. Snapshot Debugger 8 Visual Studio Code Visual Studio Xdebug WinDbg LLDB DBG @THEADORANWODO Debugger Examples PDB
9. WAYS TO DEBUG 9
10. LIVE DEBUGGING Step through code, set watches & breakpoints 10 @THEADORANWODO
11. @THEADORANWODO 11
12. JUST-IN-TIME DEBUGGING VS debugger launches when an app running outside of it crashes 12 @THEADORANWODO
13. 13 @THEADORANWODO
14. CRASH DEBUGGING Blue screen of death 14 @THEADORANWODO
15. 15 @THEADORANWODO
16. CONSOLE DEBUGGING console.log(“hereeee”) console.log(“here again”) console.log(“here for real this time”) 16 @THEADORANWODO
17. 17 @THEADORANWODO
18. REMOTE DEBUGGING Remote debug Azure app service, ASP.NET, C# or C++ 18 @THEADORANWODO DO. NOT. TRY. THIS. IN. PRODUCTION.
19. 19 @THEADORANWODO
20. TIME TRAVEL DEBUGGING Record program execution and replay later 20 @THEADORANWODO
21. 21 @THEADORANWODO
22. IMPORTANT THINGS TO KNOW 22 @THEADORANWODO
23. BREAKPOINTS 23 Interrupt function execution either by explicitly setting it or when a function occurs @THEADORANWODO
24. SYMBOLS 24 They are the record of how the compiler turned source code into machine code @THEADORANWODO
25. SOURCE LINKING 25 It’s not me, it’s the library I’m using @THEADORANWODO
26. PDB FILES 26 The .NET program database @THEADORANWODO
27. MANAGING STATE 27 Inspect state & manipulate it. Variable windows: Autos, locals, watches Execution state: Call stack, thread & modules Registers, Disassembly, memory Interactive Windows Object IDs @THEADORANWODO
28. THE VS DEBUGGER 28 @THEADORANWODO
29. DEBUGGING TIPS TO HELP INCREASE PRODUCTIVITY 29 @THEADORANWODO
30. WATCH WINDOW SEARCH 30 @THEADORANWODO Image from Microsoft Dev Blog
31. 31 @THEADORANWODO Image from Microsoft Dev Blog THE DEBUGGER DISPLAY ATTRIBUTE new Book(){ id = 1, title = “Things fall apart”, author = “Chinua Achebe”, createdAt = “2019-10-10 00:00:00”, updatedAt = “2019-10-10 00:00:00” } This Book Object is cute but I want just “Chinua Achebe”
32. 32 @THEADORANWODO Image from Microsoft Dev Blog THE DEBUGGER DISPLAY ATTRIBUTE
33. 33 @THEADORANWODO Images from Microsoft Dev Blog THE DEBUGGER DISPLAY ATTRIBUTE
34. 34 @THEADORANWODO Images from Microsoft Dev Blog WRITE EXPRESSIONS IN THE DEBUGGER DISPLAY
35. 35 @THEADORANWODO Images from Microsoft Dev Blog BREAK WHEN DATA CHANGES
36. 36 @THEADORANWODO Images from Microsoft Dev Blog HOW DO YOU LOG DATA WHEN DEBUGGING? Tracepoints are console logs that studied abroad
37. 37 @THEADORANWODO Images from Microsoft Dev Blog HOW DO YOU LOG DATA WHEN DEBUGGING? Tracepoints are console logs that studied abroad
38. 38 @THEADORANWODO Images from Microsoft Dev Blog EXPLICITLY WRITING TO THE CONSOLE
39. 39 @THEADORANWODO Images from Microsoft Dev Blog USING TRACEPOINTS
40. 40 @THEADORANWODO Images from Microsoft Dev Blog SET CONDITIONS IN TRACEPOINTS
41. 41 aka.ms/watchwindowsearch aka.ms/debuggerdisplay aka.ms/managedatabreakpoints @THEADORANWODO
42. 42 @THEADORANWODO
43. THANK YOU! 43 @THEADORANWODO