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iOS: How to store username/password within an app?

I have a login-screen in my iOS app. The username and password will be saved in the NSUserDefaults and be loaded into the login-screen again when you enter the app again (of course, NSUserDefaults are permanent). ...
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What do < and > stand for?

I know that the entities < and > are used for < and > , but I am curious what these names stand for. ...
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Difference between == and ===

In swift there seem to be two equality operators: the double equals ( == ) and the triple equals ( === ), what is the difference between the two? ...
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to drawRect or not to drawRect (when should one use drawRect/Core Graphics vs subviews/images and wh

...f this question: I know HOW to create complicated views with both subviews and using drawRect. I'm trying to fully understand the when's and why's to use one over the other. ...
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How exactly does work?

I have a few <script> elements, and the code in some of them depend on code in other <script> elements. I saw the defer attribute can come in handy here as it allows code blocks to be postponed in execution. ...
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How to change the Push and Pop animations in a navigation based app

I have a navigation based application and I want to change the animation of the push and pop animations. How would I do that? ...
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Is recursion ever faster than looping?

I know that recursion is sometimes a lot cleaner than looping, and I'm not asking anything about when I should use recursion over iteration, I know there are lots of questions about that already. ...
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Using sphinx with Markdown instead of RST

...o approach that without developing a parser from scratch: You could cheat and write a "parser" that uses Pandoc to convert markdown to RST and pass that to the RST parser :-). You can use an existing markdown->XML parser and transform the result (using XSLT?) to the docutils schema. You could ...
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Refresh image with a new one at the same url

...ppend the current timestamp automatically when you are creating the image, and it will make the browser look again for the image instead of retrieving the one in the cache. share | improve this answ...
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Differences between TCP sockets and web sockets, one more time [duplicate]

Trying to understand as best as I can the differences between TCP socket and websocket, I've already found a lot of useful information within these questions: ...