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Token Authentication vs. Cookies
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A typical web app is mostly stateless, because of its request/response nature. The HTTP protocol is the best example of a stateless protocol. But since most web apps need state, in order to hold the state between server and client, cookies...
What's the difference between using CGFloat and float?
...it will jump to the CGBase.h header where the typedef is defined. The same approach is used for NSInteger and NSUInteger as well.
These types were introduced to make it easier to write code that works on both 32-bit and 64-bit without modification. However, if all you need is float precision within...
How to explore web-based Google Play in another country?
...gle.com, it automatically recognizes my country and allow me to browse the apps for that country. I can change the language through the dropdown in the footer, or I can add &hl=code in the querystring...but that only changes the language...not the store content (the app lists and rankings remain the...
What are the uses of the exec command in shell scripts? [closed]
...re are some scenarios I have used it;
We want the user to run a specific application program without access to the shell. We could change the sign-in program in /etc/passwd, but maybe we want environment setting to be used from start-up files. So, in (say) .profile, the last statement says somet...
SSL handshake alert: unrecognized_name error since upgrade to Java 1.7.0
...on property. To allow your programs to work without re-compiling, run your app as:
java -Djsse.enableSNIExtension=false yourClass
The property can also be set in the Java code, but it must be set before any SSL actions. Once the SSL library has loaded, you can change the property, but it won't ha...
getExtractedText on inactive InputConnection warning on android
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I ran into a similar issue. My logcat:
W/IInputConnectionWrapper(21214): getTextBeforeCursor on inactive InputConnection
W/IInputConnectionWrapper(21214): getSelectedText on inactive InputConnection
W/IInputConnectionWrapper(21214): getTextBeforeCursor on inactive InputConnection
W/I...
How can I use different certificates on specific connections?
A module I'm adding to our large Java application has to converse with another company's SSL-secured website. The problem is that the site uses a self-signed certificate. I have a copy of the certificate to verify that I'm not encountering a man-in-the-middle attack, and I need to incorporate this...
What exactly does the post method do?
...use a new thread instead of UI thread (main thread)?
UI Thread :
When application is started, Ui Thread is created automatically
it is in charge of dispatching the events to the appropriate widgets
and this includes the drawing events.
It is also the thread you interact with Android widgets wit...
Difference between objectForKey and valueForKey?
...orKey can be intensely slow - it's currently a major bottleneck in my iPad app, so slow that replacing it with a "standard" dictionary made the app noticeably faster. Something very wrong with KVC on iOS, and I'll never use it again - not worth the drop in performance, and having to re-write it the ...
What is the correct way to create a single-instance WPF application?
...her than Windows Forms or console), what is the correct way to create an application that can only be run as a single instance?
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