Tutorial by Topics: handling

Objects of type Throwable and its subtypes can be sent up the stack with the throw keyword and caught with try…catch statements. void someMethod() throws SomeException { } //method declaration, forces method callers to catch if SomeException is a checked exception type try { someMethod();...

try { … } catch (error) { … } try { … } finally { … } try { … } catch (error) { … } finally { … } throw new Error([message]); throw Error([message]); try allows you to define a block of code to be tested for errors while it is being executed. catch allows you to define a block of code ...

For more information about errors, see The Swift Programming Language.

void (*signal(int sig, void (*func)(int)))(int); ParameterDetailssigThe signal to set the signal handler to, one of SIGABRT, SIGFPE, SIGILL, SIGTERM, SIGINT, SIGSEGV or some implementation defined valuefuncThe signal handler, which is either of the following: SIG_DFL, for the default handler...

In Go, unexpected situations are handled using errors, not exceptions. This approach is more similar to that of C, using errno, than to that of Java or other object-oriented languages, with their try/catch blocks. However, an error is not an integer but an interface. A function that may fail typica...

int readfile ( string $filename [, bool $use_include_path = false [, resource $context ]] ) ParameterDescriptionfilenameThe filename being read.use_include_pathYou can use the optional second parameter and set it to TRUE, if you want to search for the file in the include_path, too.contextA ...

NSAssert(condition, fmtMessage, arg1, arg2, ...) (args in italics are optional) -- Asserts that condition evaluates to a true value. If it doesn't than the assertion will raise an exception (NSAssertionException), with the fmtMessage formatted with the args provided

Rust uses Result<T, E> values to indicate recoverable errors during execution. Unrecoverable errors cause Panics which is a topic of its own. Details of error handling is described in The Rust Programming Language (a.k.a The Book)

window.onerror = function (eventOrMessage, url, lineNumber, colNumber, error) { ... } ParameterDetailseventOrMessageSome browsers will call the event handler with just one argument, an Event object. However, other browsers, especially the older ones and older mobile ones will supply a String...

private void EventName (object sender, EventArgs e); ParameterDetailsobject sendersender refers to the object that invoked the event that fired the event handler. This is useful if you have many objects using the same event handler.EventArgs eEventArgs is something of a dummy base class. In ...

Error Log Locations /var/log/ Typically the system.log and exception.log file will exist in the /var/log/ folder. These contain most of the information you will need. You can check to see if these are enabled and what the names of the exception and system log are by going to System > Conf...

System.IO.File.ReadAllLines(path As String) System.IO.File.ReadAllText(path As String) System.IO.File.WriteAllText(path As String, contents As String) System.IO.File.WriteAllLines(path As String, contents() As String)

#include <errno.h> int errno; /* implementation defined */ #include <string.h> char *strerror(int errnum); #include <stdio.h> void perror(const char *s); Have in mind that errno is not necessarily a variable but that the syntax is only an indication how it might been ...