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.
Execution abruptly halting if the thread / process is killed makes sense
Why it won't execute cleanup code when I exit the main program normally by clicking the [X] on my terminal window?
I'm still learning the ins-and-outs of multithreaded…
I'm looking for the equivalent semantics to the popular Try-Finally exception cleanup pattern, e.g. Why use try … finally without a catch clause?
The idea is that you have cleanup steps that need to happen regardless of whether the code succeeds or…
I was recently surprised to find that the finally block in this play framework controller action code only got called after an Exception, but never when the call actually succeeded.
try {
InputStream is = getInputStreamMethod();
…
In my project I have an object whose constructor can throw. So the code I'm using all across is as follows:
MyObject obj = null;
try
{
obj = new MyObject();
obj.DoSomething();
}
finally
{
if (obj != null)
obj.Free();
}
As…
In C#.NET, let's take the following example
[WebMethod]
public int TakeAction()
{
try {
//Call method A
Return 1;
} catch (Exception e) {
//Call method B
Return 0;
} finally {
//Call method C
…
According to Java Language Specification, Section §14.20.2
A try statement with a finally block is executed by first executing the try block. Then there is a choice:
If execution of the try block completes normally, then the finally
block…
How to properly dispose graphics context - do I need to use try and finally? Simple example:
public void paint(Graphics g) {
Graphics2D g2d = (Graphics2D) g.create();
try {
g2D.drawLine(0, 0, 10, 0);
} finally {
…
In my real case a Segmentation fault arises in the finally clause which I can't do anything about because it stems from an external library used via ctypes. Actually, I don't care about this segfault because the script is done anyway.
However, the…
Here's the code example :
Try
Throw New FirstException()
Finally
Throw New SecondException()
End Try
I figured out it only throws SecondException out and FirstException just vanishes.
I thought FirstException would be inside InnerException…
Two very basic questions about exception handling in Delphi.
1) When to Try? My guess is that I don't need a Try clause around
strightforward code such as assignments, conditionals and loops
access to my VCL compnents
but that I do need to…
In many places in some Apps which I maintain , I've found code which uses a try/finally or try/except block in a for loop or if sentence avoiding the use of begin/end
Consider the next code (not production code, just a sample)
{$APPTYPE…
Ada 83 was one of the first languages to have exceptions. (I want to say 'the first', but one thing I have learned from looking into the history of technology is that there is almost always an earlier X.)
From the implementation perspective, the…
This question may appear similar to others that have been answered, but I can't find an answer relating to JavaScript.
What is the difference between code in a finally block and code that comes after the entire try ... catch ... finally…
When does it make sense to use finally in the try..except block? Isn't listing statements just after the try..except doing the same?
What's the difference between these two?
try:
result = 100 / 0
except ZeroDivisionError:
print("division by…
I've run into some problems in my code, and so I have narrowed it down to this simple use-case:
function func() {
try {
return true;
}
finally {
return false;
}
}
console.log(func());
To my extreme surprise, the…
