try-finally is a clause used to define a block of code which may throw an exception along with instructions to execute regardless of whether an exception occurs or not.
I'm stuck on python2.4, so I can't use a finally clause with generators or yield. Is there any way to work around this?
I can't find any mentions of how to work around this limitation in python 2.4, and I'm not a big fan of the workarounds I've…
I have a simple question an simple part of code, some basic try-finally block:
try {
// Some code which can throw an Exception
} finally {
// Some code which also can throw an Exception
}
My main question would be: Is there any way we can…
Possible Duplicate:
throws Exception in finally blocks
The catch block is only executed if an exception is thrown in the try block.
The finally block is executed always after the try(-catch) block, if an exception is thrown or not.
My question…
I'm looking for a way to ensure that an object that is executed on the heap is ALWAYS deallocated when I'm done with it.
I know that if it's allocated on the stack, I can use RAII to ensure it will be taken care of - unfortunately, this won't work…
JEP 421, being released in the forthcoming Java 18, deprecates finalization. I understand this mean the finalize() method is being deprecated. However, it also mentions the try/finally block and mentions try-with-resources as an alternative, so I'm…
I don't really understand how the instructions flow in the following code.
The body of finally is guaranteed to be executed before the method returns. If so, the return value should be 0 rather than 1.
Could you explain the internal mechanism why…
Can someone enlighten me on handling the database connection (and errors) using try finally ?
What would be the best practice ?
Seen various styles but I wonder what would be the best approach.
Should opening of the tables be put in TRY block or…
Javadoc and some answers(Threads - Why a Lock has to be followed by try and finally) state that:
In most cases, the following idiom should be used:
Lock l = ...;
l.lock();
try {
// access the resource protected by this lock
} finally {
…
I am working on a codebase that has recently migrated from Java 6 to Java 7. I would like to replace constructions like this:
Connection conn = null;
try{
conn = new Connection();
...
} catch(Exception ex){
...
} finally{
if (conn !=…
Looking through the sources of .NET Core, I've found the following piece in ConcurrentQueue source:
//We need do Interlocked.Increment and value/state update in a finally block to ensure that they run
//without interuption. This is to prevent…
This question extends from Try-finally block prevents StackOverflowError.
If I add a catch block, why catch block codes never runs?
public static void foo() {
try {
foo();
} catch(StackOverflowError e) {
…
I have some code which creates a JarFile and a URLClassLoader, both of which I want to close at the end. Naturally, I decided to use the finally block to deal with the cleanup:
JarFile jar = ...;
URLClassLoader loader = ...;
try {
// work ...
}…
I've made a map editor in Python2.7.9 for a small project and I'm looking for ways to preserve the data I edit in the event of some unhandled exception. My editor already has a method for saving out data, and my current solution is to have the main…
Today this interesting piece of python code was posted on Twitter.
def f():
try:
raise KeyError
finally:
return 42
g = f()
When executing it, f() returns 42 and there's no exception bubbling up the stack as I'd expect.…
