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Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
...e completely destroyed and recreated.
Separately we have MyTask (extended from AsyncTask) which does all the work. We can't store it in MainFragment because that will be destroyed, and Google has deprecated using anything like setRetainNonInstanceConfiguration(). That isn't always available anyway ...
How to run a command before a Bash script exits?
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From the bash manpage (concerning builtins):
trap [-lp] [[arg] sigspec ...]
The command arg is to be read and executed when the shell
receives signal(s) sigspec.
So, as indicated ...
How to colorize diff on the command line?
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Man pages for diff suggest no solution for colorization from within itself. Please consider using colordiff. It's a wrapper around diff that produces the same output as diff, except that it augments the output using colored syntax highlighting to increase readability:
diff old ne...
Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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The reason for first one working:
From MSDN:
In string concatenation operations,the C# compiler treats a null string the same as an empty string, but it does not convert the value of the original null string.
More information on the + binary operator:
The ...
When should I use Debug.Assert()?
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From Code Complete
8 Defensive Programming
8.2 Assertions
An assertion is code that’s used during development—usually a routine
or macro—that allows a program to check itself as it runs. When an
assertion is true, that...
Dependency injection through constructors or property setters?
...there is a dependency on the persistence layer.
Also, to prevent yourself from having to alter every use of the old constructor, simply apply constructor chaining as a temporary bridge between the old and new constructor.
public class ClassExample
{
public ClassExample(IDependencyOne dependenc...
How to pattern match using regular expression in Scala?
...s an old discussion - I'm probably grave-digging): you can remove the '.*' from the end since it doesn't add any value to the regex. Just "Cat".matches("^[a-cA-C]")
– akauppi
Mar 29 '13 at 14:47
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Unable to load DLL 'SQLite.Interop.dll'
... Well you're right and it is not ideal. I tried to copy the interop dll from the post build event and it doesn't even work. These dll seem to appear in the x86/x64 AFTER the post-build event is called .. somewhat useless.
– DarkUrse
Mar 11 '19 at 9:15
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Difference between the Apache HTTP Server and Apache Tomcat? [closed]
...lass files by the server and executed by the Java virtual machine. - Apart from that, this forum here explains the difference between Apache HTTPD and Tomcat pretty well: coderanch.com/t/85182/Tomcat/…
– Peterino
Jan 19 '12 at 15:44
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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
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Yes, this is how you know that someone learned C from K&R, the way it should be learned. Whenever I see while(TRUE), I suspect the programmer is a C newbie, or learned C from a For Dummies book.
– Kristopher Johnson
May 19 '10 at ...