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Strings as Primary Keys in SQL Database [closed]
... in the right place in the page. When the page is full, a page split will happen, with half of the rows on the page going to one page, and half going on the other. The pages are then relinked into the linked list of pages that comprise a tables data that has the clustered index. At most, you will en...
Padding is invalid and cannot be removed?
... to my program but can't seem to find a solution or the reason why it's happening to my specific program. I have been using the example provided my msdn for encrypting and decrypting an XmlDocument using the Rijndael algorithm. The encryption works fine but when I try to decrypt, I get the followi...
What does status=canceled for a resource mean in Chrome Developer Tools?
...he source to find all the places where requests could get cancelled, and slapped breakpoints on all of them to debug. From memory, the only places where Chrome will cancel a request:
The DOM element that caused the request to be made got deleted (i.e. an IMG is being loaded, but before the load ha...
Why is auto_ptr being deprecated?
...wnership of *ap, leaving ap set to a nullptr, and the problem is that can happen too easily, without the programmer having thought through its safety.
For example, if a class/struct has a std::auto_ptr member, then making a copy of an instance will release the pointer from the instance being copied...
What do 'statically linked' and 'dynamically linked' mean?
...es responsible for the dreaded "DLL hell" that some people mention in that applications can be broken if you replace a dynamically linked library with one that's not compatible (developers who do this should expect to be hunted down and punished severely, by the way).
As an example, let's look at...
In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
...ng get_readonly_fields.
Usually you should declare something like this in app/admin.py:
class ItemAdmin(admin.ModelAdmin):
...
readonly_fields = ('url',)
I've adapted in this way:
# In the admin.py file
class ItemAdmin(admin.ModelAdmin):
...
def get_readonly_fields(self, request...
How to set JVM parameters for Junit Unit Tests?
...to run - i.e. 1G. (They test memory-intensive functionality for a webstart app that will only run with sufficient heap-space, and will be run internally on Win 7 64-bit machines - so redesigning the tests isn't a practical suggestion.)
...
Moving Files into a Real Folder in Xcode
When I started my project I was happy to use Groups in Xcode rather than literal folders: Since I'm using the browser in Xcode to access everything, stuff was nicely organized and I was happy.
...
What is the difference between sigaction and signal?
I was about to add an extra signal handler to an app we have here and I noticed that the author had used sigaction() to set up the other signal handlers. I was going to use signal() . To follow convention I should use sigaction() but if I was writing from scratch, which should I choose?
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How can I get the latest JRE / JDK as a zip file rather than EXE or MSI installer? [closed]
...
You can download a Java Portable from PortableApps.com. It will not change your system settings. You can put it on your USB stick.
UPD: for those who needs JDK there's an open-source project OpenJDK Portable
UPD2: there is also a JDK Portable (Oracle)
Some people migh...