try-finally Questions
3
Solved
I'm writing a monitoring script in Powershell using a Try/Finally to log a message should the script end. The script is intended to run indefinitely, so I want a way to track unintended exiting.
E...
Blush asked 14/7, 2017 at 13:41
18
Solved
I am not sure why we need finally in try...except...finally statements. In my opinion, this code block
try:
run_code1()
except TypeError:
run_code2()
other_code()
is the same with this one usi...
Reach asked 18/7, 2012 at 23:44
3
The following cx_Oracle code works fine when the database is up:
#!C:\Python27
import cx_Oracle
try:
conn = cx_Oracle.connect("scott/tiger@oracle")
try:
curs = conn.cursor()
curs.execute("SE...
Spaniel asked 9/3, 2011 at 16:27
7
Solved
Take the following code as a sample:
procedure TForm1.Button1Click(Sender: TObject);
var
Obj: TSomeObject;
begin
Screen.Cursor:= crHourGlass;
Obj:= TSomeObject.Create;
try
// do something
f...
Scharf asked 6/7, 2011 at 18:23
3
Solved
Will the following code:
while True:
try:
print("waiting for 10 seconds...")
continue
print("never show this")
finally:
time.sleep(10)
Always print the message "waiting for 10 seconds...",...
Maneater asked 11/5, 2012 at 3:11
11
Solved
I'm reviewing some new code. The program has a try and a finally block only. Since the catch block is excluded, how does the try block work if it encounters an exception or anything throwable? Does...
Whispering asked 30/12, 2010 at 2:52
1
Solved
I thought that if I use "try" and just "finally" else, without any "except", if the "try" statements couldn't be executed, the "finally" statements should be executed, but after that, an erro...
Elastomer asked 17/4, 2020 at 4:51
6
Solved
Is it possible to tell if there was an exception once you're in the finally clause? Something like:
try:
funky code
finally:
if ???:
print('the funky code raised')
I'm looking to make somethi...
Clavius asked 4/3, 2018 at 19:42
3
Solved
If I try the following code, I see that the normal block return value is not returned, but the finally block return value is:
>>> def f():
... try:
... return "normal"
... finally:
...
Wellrounded asked 15/10, 2019 at 11:27
11
Solved
What's the difference between
try {
fooBar();
} finally {
barFoo();
}
and
try {
fooBar();
} catch(Throwable throwable) {
barFoo(throwable); // Does something with throwable, logs it, or han...
Rayburn asked 18/5, 2010 at 6:15
5
Solved
For some reason within my console application I cannot get my finally block to run. I was writing this code to test how the finally block works so it is very simple:
static void Main()
{
int i = ...
Decuple asked 28/8, 2012 at 15:59
6
Solved
Take a look at the following two methods:
public static void foo() {
try {
foo();
} finally {
foo();
}
}
public static void bar() {
bar();
}
Running bar() clearly results in a StackOver...
Asta asked 15/9, 2012 at 15:49
2
I am trying to understand the mechanism when i use finally inside a while loop.
In the below code. In finally line prints and than the while breaks. I was expecting the code not to reach the...
Sheaff asked 8/2, 2018 at 9:31
1
Solved
In new, third edition of Effective Java Joshua Bloch mentions piece of code from Java Puzzlers (it's about closing resources in try-finally):
For starters, I got it wrong on page 88 of Java Puzz...
Methanol asked 25/1, 2018 at 17:52
1
Solved
In java, it is not recommended to throw exceptions inside finally section in try-chatch block due to hide the propagation of any unhandled throwable which was thrown in the try or catch block. This...
Niven asked 20/12, 2016 at 14:53
2
Solved
Assume I'm going to write a Python script that catches the KeyboardInterrupt exception to be able to get terminated by the user using Ctrl+C safely
However, I can't put all critical actions (like ...
Foppish asked 21/4, 2016 at 6:15
3
Solved
I'm trying to wrap my head around this. According to this page on Using statements:
The using statement ensures that Dispose is called even if an exception occurs while you are calling methods o...
Limitary asked 2/2, 2016 at 19:19
2
Solved
An empty try has some value as explained elsewhere
try{}
finally
{
..some code here
}
However, is there any use for an empty finally such as:
try
{
...some code here
}
finally
{}
EDIT: Not...
Howey asked 18/12, 2015 at 20:30
5
When I try to execute the following function in Java:
public static int myfunc (int x) {
try {
return x;
} finally {
x++;
}
}
public static void main (String args[]) {
int y=5,z;
z =...
U asked 21/7, 2015 at 6:15
2
With the following code:
try {
throw new RuntimeException ("main");
}
finally {
throw new RuntimeException ("finally");
}
I get this result:
Exception in thread "main" java.lang.RuntimeExcept...
Cilicia asked 19/6, 2015 at 9:5
2
Solved
When compiling the following code with a simple try/finally block, the Java Compiler produces the output below (viewed in the ASM Bytecode Viewer):
Code:
try
{
System.out.println("Attempting to ...
Galasyn asked 15/3, 2015 at 14:16
1
Solved
Suppose I have the following routine:
function ReadFile(f : TFilename) : Boolean;
var
fs : TFileStream;
begin
Result := False;
try
fs := TFileStream.Create(f, ...);
try
// read file ...
Res...
Lavalley asked 4/3, 2015 at 19:21
2
Solved
Will the writer.close() method inside the finally { } block run on an Junit Assertion Error?
Assume the following code:
@Test
public void testWriter() {
try {
writer.open();
final List<...
Yalta asked 10/11, 2014 at 15:33
1
Solved
I've been playing around with the Visual Studio 14 CTP 2. This version of C# vNext enables the use of the await keyword inside a finally block.
I am trying to figure out how this was implemented. ...
Hypno asked 21/7, 2014 at 14:31
2
I found a situation when finally block is not called.
To the point:
using System;
using System.Collections.Generic;
using System.Threading;
using System.ComponentModel;
class MainClass{
...
Allwein asked 12/11, 2013 at 13:18
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