For syntax errors, you need to enable error display in the php.ini. By default these are turned off because you don’t want a “customer” seeing the error messages. Check this page in the PHP documentation for information on the 2 directives: error_reporting and display_errors. display_errors is probably the one you want to change. If you … Read more
There are a bunch of ways to do it, but the most straightforward is to simply use the Python debugger. Just add following line in to a Django view function: import pdb; pdb.set_trace() or breakpoint() #from Python3.7 If you try to load that page in your browser, the browser will hang and you get a … Read more
On your MaterialApp set debugShowCheckedModeBanner to false. MaterialApp( debugShowCheckedModeBanner: false, ) The debug banner will also automatically be removed on release build.
Add the System.Diagnostics namespace, and then you can use Debug.WriteLine() to quickly print a message to the output window of the IDE. For more details, please refer to these: How to trace and debug in Visual C# A Treatise on Using Debug and Trace classes, including Exception Handling
You can use debugger; within your code. If the developer console is open, execution will break. It works in firebug as well.
What are the syntax errors? PHP belongs to the C-style and imperative programming languages. It has rigid grammar rules, which it cannot recover from when encountering misplaced symbols or identifiers. It can’t guess your coding intentions. Most important tips There are a few basic precautions you can always take: Use proper code indentation, or adopt … Read more
In simple terms, a stack trace is a list of the method calls that the application was in the middle of when an Exception was thrown. Simple Example With the example given in the question, we can determine exactly where the exception was thrown in the application. Let’s have a look at the stack trace: … Read more
This answer describes the process of retrieving the stack trace. Already have the stack trace? Read up on stack traces in “What is a stack trace, and how can I use it to debug my application errors?” The Problem Your application quit because an uncaught RuntimeException was thrown. The most common of these is the … Read more
Manual Process From your device, if it is rooted According to a post on xda-developers, you can enable ADB over Wi-Fi from the device with the commands: su setprop service.adb.tcp.port 5555 stop adbd start adbd And you can disable it and return ADB to listening on USB with setprop service.adb.tcp.port -1 stop adbd start adbd … Read more
Warning: Cannot modify header information – headers already sent Happens when your script tries to send an HTTP header to the client but there already was output before, which resulted in headers to be already sent to the client. This is an E_WARNING and it will not stop the script. A typical example would be … Read more