Tutorial by Examples: debugger

Adding the DebuggerDisplay Attribute will change the way the debugger displays the class when it is hovered over. Expressions that are wrapped in {} will be evaluated by the debugger. This can be a simple property like in the following sample or more complex logic. [DebuggerDisplay("{StringPr...
The Python Standard Library includes an interactive debugging library called pdb. pdb has extensive capabilities, the most commonly used being the ability to 'step-through' a program. To immediately enter into step-through debugging use: python -m pdb <my_file.py> This will start the debu...
The Locals window provides easy access to the current value of variables and objects within the scope of the function or subroutine you are running. It is an essential tool to debugging your code and stepping through changes in order to find issues. It also allows you to explore properties you might...
Both Chrome and Safari have built in debuggers. With Chrome, all you have to do is right-click on a web page and 'Inspect Element'. With Safari, you'll have to go into Preferences > Advanced and click on 'Show Develop menu in menu bar'. With Firefox, you'll need to install Firebug
You'll need to add debugger statements to your code: Meteor.methods({ doSomethingUself: function(){ debugger; niftyFunction(); } });
0.170.18.0 At the time of writing (July 2016) elm-reactor has been temporarily stripped of its time traveling functionality. It's possible to get it, though, using the jinjor/elm-time-travel package. It's usage mirrors Html.App or Navigation modules' program* functions, for example instead of: im...
Let's say your launch activity is called MainActivity, in your app com.example.myapp. In the manifest: <activity android:name=".MainActivity" > <intent-filter> <action android:name="android.intent.action.MAIN"/> ...
Some times you need to debug python code which is executed by another process and and in this cases rpdb comes in handy. rpdb is a wrapper around pdb that re-routes stdin and stdout to a socket handler. By default it opens the debugger on port 4444 Usage: # In the Python file you want to debu...
You can use browser.debugger() to stop the execution. You can insert it any place in your code and it will stop the execution after that line until you don't command to continue. Note: To run the tests in debugger mode you have to issue command like this: `protractor debug <configuration.fi...
Most debugging happens in the terminal or in the Chrome or Safari develop tools, which are plenty sophisticated enough for 99% of your needs. However, if you want to debug on Firefox or need extra server debugging functionality, there are a few extra utilities you can use. Firefox - Firebug Nod...
WinDbg is often used as an abbreviation of "Debugging tools for Windows". It contains different debuggers: DebuggerDescriptionWinDbgthe debugger with a graphical user interfaceCDBconsole debugger, user mode debugger which runs in the currently open consoleNTSDnew terminal symbolic debugge...
Most basic Django debugging tool is pdb, a part of Python standard library. Init view script Let's examine a simple views.py script: from django.http import HttpResponse def index(request): foo = 1 bar = 0 bug = foo/bar return HttpResponse("%d goes here." % ...
Using core debugger Node.js provides a build in non graphical debugging utility. To start the build in the debugger, start the application with this command: node debug filename.js Consider the following simple Node.js application contained in the debugDemo.js 'use strict'; function addTwoN...
$perl -d:MOD script.pl runs the program under the control of a debugging, profiling, or tracing module installed as Devel::MOD. For example, -d:NYTProf executes the program using the Devel::NYTProf profiler. See all available Devel modules here Recommended modules: Devel::NYTProf -- Powerful ...
Official Apex Debugger Realtime debugging Force.com IDE requires special licensing from salesforce Welkin Suit Log replay debugging Stand alone IDE Subscription required Illuminated Cloud: Log replay debugging JetBrains Extension Subscription required Salesfor...
Debugging takes time and effort. Instead of chasing bugs with a debugger, consider spending more time on making your code better by: Write and run Tests. Python and Django have great builtin testing frameworks - that can be used to test your code much faster than manually with a debugger. Writ...

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