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Applications are expected to have a root view controller at the end of application launch
...ad this same problem. Check your main.m. The last argument should be set to the name of the class that implements the UIApplicationDelegate protocol.
retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate");
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What is the difference between syntax and semantics in programming languages?
...pression of an IF statement inside parentheses
group multiple statements into a single statement by enclosing in curly braces
data types and variables must be declared before the first executable statement (this feature has been dropped in C99. C99 and latter allow mixed type declarations.)
Semant...
Git branching: master vs. origin/master vs. remotes/origin/master
I think I'm on the right track to understand the basic concepts of git.
7 Answers
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HTTP vs HTTPS performance
...there any major differences in performance between http and https? I seem to recall reading that HTTPS can be a fifth as fast as HTTP. Is this valid with the current generation webservers/browsers? If so, are there any whitepapers to support it?
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How do I sort an observable collection?
...for the number of collection changed notifications.
I have updated my code to improve performance (thanks to nawfal) and to handle duplicates which no other answers here do at time of writing. The observable is partitioned into a left sorted half and a right unsorted half, where each time the minimu...
Is there hard evidence of the ROI of unit testing?
Unit testing sounds great to me, but I'm not sure I should spend any time really learning it unless I can convince others that is has significant value. I have to convince the other programmers and, more importantly, the bean-counters in management, that all the extra time spent learning the testin...
php $_POST array empty upon form submission
I have a custom CMS i've built that works perfectly on my dev box (Ubuntu/PHP5+/MySQL5+).
27 Answers
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Using Default Arguments in a Function
...ull value means you want the default value for one parameter when you want to override the default value for a parameter that comes after it.
As stated in other answers,
default parameters only work as the last arguments to the function.
If you want to declare the default values in the func...
How to see top processes sorted by actual memory usage?
I have a server with 12G of memory. A fragment of top is shown below:
12 Answers
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Heroku NodeJS http to https ssl forced redirect
...nning on heroku with express on node with https,. How do I identify the protocol to force a redirect to https with nodejs on heroku?
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