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What is a Windows Handle?
...at is managed by the Windows kernel. A handle can be to a window, a file, etc.
Handles are simply a way of identifying a particulate resource that you want to work with using the Win32 APIs.
So for instance, if you want to create a Window, and show it on the screen you could do the following:
//...
What is the real overhead of try/catch in C#?
...
When an exception is thrown in addition to the stack unwinding operations etc that take place which others have mentioned you should be aware that a whole bunch of runtime/reflection related stuff happens in order to populate the members of the exception class such as the stack trace object and the...
Iterate all files in a directory using a 'for' loop
...*) do ( something_here )
In my case I also wanted the file content, name, etc.
This lead to a few issues and I thought my use case might help. Here is a loop that reads info from each '.txt' file in a directory and allows you do do something with it (setx for instance).
@ECHO OFF
setlocal enable...
Is using a lot of static methods a bad thing?
...ons this isn't possible (e.g., regular class code generation from XSD/WSDL/etc), or it will make the class very long, and transformation methods can often be a real pain for complex objects and you just want them in their own separate class. So yeah, I have static methods in utility classes.
...
Storing money in a decimal column - what precision and scale?
...or domain expert about accounting rules which may be applicable: GAAP, EU, etc. I vaguely recall some EU intra-state transfers with explicit rules for rounding to five decimal places, therefore using DECIMAL(p, 6) for storage. Accountants generally seem to favour four decimal places.
PS Avoid SQL...
Why fragments, and when to use fragments instead of activities?
...tures like the ActionBar, with tabs, overflow, split action bar, viewpager etc.
Bonus 2
The best way to communicate between fragments are intents. When you press something in a Fragment you would typically call StartActivity() with data on it. The intent is passed on to all fragments of the a...
Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
...tp://d36cz9buwru1tt.cloudfront.net/AWS_NoSQL_MongoDB.pdf
Mongodb path in /etc/mongodb.conf was set to /var/lib/mongodb (primary install location and working). When I changed to /data/db (EBS volume) I was getting 'errno:13 Permission denied'.
First I ran sudo service mongodb stop.
Then I used ls ...
How do you automate Javascript minification for your Java web applications?
...ros for Google Closure compiler
wro4j (Maven, servlet filters, plain Java, etc)
ant-yui-compressor (ant task for compressing JS+CSS)
JAWR
Minify Maven Plugin
humpty
Ant exec task using Terser
share
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...
htaccess Access-Control-Allow-Origin
... headers
of course after any changes in Apache you have to restart it:
/etc/init.d/apache2 restart
Then you can use
<IfModule mod_headers.c>
Header set Access-Control-Allow-Origin "*"
</IfModule>
And if mod_headers is not active, this line will do nothing at all. You can try ...
Error-Handling in Swift-Language
...eyword) which let you achieve the same effect as finally blocks in Java/C#/etc
guard statement (using guard keyword) which let you write little less if/else code than in normal error checking/signaling code.
Swift 1
Runtime errors:
As Leandros suggests for handling runtime errors (like network...