Productive Debugging. Because time is money

Transcript

1. Productive Debugging.

   Because time is money.
   

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2. 2
   @THEADORANWODO
   

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3. 3
   @THEADORANWODO
   

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4. HI, I’M ADORA!
   Software Engineer, Microsoft
   Dev Blog, YouTube @adorahack
   Co-Organizer Android Ngr, GDG Ajah, Unstack
   @theadoranwodo
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5. STORYTIME
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   The first computer bug was actually a moth
   @THEADORANWODO
   

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7. What is a debugger ?
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   @THEADORANWODO
   

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8. Snapshot Debugger
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   Visual Studio Code
   Visual Studio
   Xdebug
   WinDbg
   LLDB
   DBG
   @THEADORANWODO
   Debugger Examples
   PDB
   

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9. WAYS TO DEBUG
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10. LIVE DEBUGGING
    Step through code, set watches & breakpoints
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    @THEADORANWODO
    

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11. @THEADORANWODO 11
    

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12. JUST-IN-TIME DEBUGGING
    VS debugger launches when an app running outside of it crashes
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    @THEADORANWODO
    

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14. CRASH DEBUGGING
    Blue screen of death
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    @THEADORANWODO
    

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16. CONSOLE DEBUGGING
    console.log(“hereeee”)
    console.log(“here again”)
    console.log(“here for real this time”)
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    @THEADORANWODO
    

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    @THEADORANWODO
    

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18. REMOTE DEBUGGING
    Remote debug Azure app service, ASP.NET, C# or C++
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    @THEADORANWODO
    DO. NOT. TRY. THIS. IN. PRODUCTION.
    

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    @THEADORANWODO
    

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20. TIME TRAVEL DEBUGGING
    Record program execution and replay later
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    @THEADORANWODO
    

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22. IMPORTANT THINGS TO KNOW
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23. BREAKPOINTS
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    Interrupt function execution either by explicitly setting it or when a function occurs
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24. SYMBOLS
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    They are the record of how the compiler turned source code into machine code
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25. SOURCE LINKING
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    It’s not me, it’s the library I’m using
    @THEADORANWODO
    

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26. PDB FILES
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    The .NET program database
    @THEADORANWODO
    

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27. MANAGING STATE
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    Inspect state & manipulate it.
    Variable windows: Autos, locals, watches
    Execution state: Call stack, thread & modules
    Registers, Disassembly, memory
    Interactive Windows
    Object IDs
    @THEADORANWODO
    

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28. THE VS DEBUGGER
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    @THEADORANWODO
    

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29. DEBUGGING TIPS TO HELP
    INCREASE PRODUCTIVITY
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    @THEADORANWODO
    

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30. WATCH WINDOW SEARCH
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    @THEADORANWODO
    Image from Microsoft Dev Blog
    

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    @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”
    

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    @THEADORANWODO
    Image from Microsoft Dev Blog
    THE DEBUGGER DISPLAY ATTRIBUTE
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    THE DEBUGGER DISPLAY ATTRIBUTE
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    WRITE EXPRESSIONS IN THE DEBUGGER DISPLAY
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    BREAK
    WHEN
    DATA
    CHANGES
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    HOW DO YOU LOG DATA WHEN DEBUGGING?
    Tracepoints are console logs that studied abroad
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    HOW DO YOU LOG DATA WHEN DEBUGGING?
    Tracepoints are console logs that studied abroad
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    EXPLICITLY WRITING
    TO THE CONSOLE
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    USING
    TRACEPOINTS
    

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    @THEADORANWODO
    Images from Microsoft Dev Blog
    SET
    CONDITIONS IN
    TRACEPOINTS
    

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    aka.ms/watchwindowsearch
    aka.ms/debuggerdisplay
    aka.ms/managedatabreakpoints
    @THEADORANWODO
    

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    @THEADORANWODO
    

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43. THANK YOU!
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    @THEADORANWODO
    

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