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No identities are available for signing Xcode 5

...when try to validate my app in Xcode 5. I tried all: Recreate certificates and provisioning profiles, all methods which have been described on this site and another resources; I'm confused, because when I try to distribute my app as Ad-hoc, it successfully create and install on test device an IPA fi...
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passing several arguments to FUN of lapply (and others *apply)

...n the lapply call as an argument, like so: lapply(input, myfun, arg1=6) and lapply, recognizing that arg1 is not an argument it knows what to do with, will automatically pass it on to myfun. All the other apply functions can do the same thing. An addendum: You can use ... when you're writing you...
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How to track down a “double free or corruption” error

...You can set this from gdb by using the set environment MALLOC_CHECK_ 2 command before running your program; the program should abort, with the free() call visible in the backtrace. see the man page for malloc() for more information ...
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Fastest way to determine if record exists

... @Declan_K: seems like my magic sphere failed in this case and a column entitled as id isn't PK. So +1 to your advice. – zerkms Aug 7 '13 at 22:00 4 ...
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How to generate XML file dynamically using PHP?

...ocument in PHP you should instance a DOMDocument class, create child nodes and append these nodes in the correct branch of the document tree. For reference you can read http://it.php.net/manual/en/book.dom.php Now we will take a quick tour of the code below. at line 2 we create an empty xml docu...
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Fastest way to count exact number of rows in a very large table?

...ECT COUNT(*) FROM TABLE_NAME will be slow when the table has lots of rows and lots of columns. 25 Answers ...
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What does 'synchronized' mean?

I have some questions regarding the usage and significance of the synchronized keyword. 17 Answers ...
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How do I create a list of random numbers without duplicates?

I tried using random.randint(0, 100) , but some numbers were the same. Is there a method/module to create a list unique random numbers? ...
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how to split the ng-repeat data with three columns using bootstrap

... The most reliable and technically correct approach is to transform the data in the controller. Here's a simple chunk function and usage. function chunk(arr, size) { var newArr = []; for (var i=0; i<arr.length; i+=size) { newArr.pus...
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Update relationships when saving changes of EF4 POCO objects

Entity Framework 4, POCO objects and ASP.Net MVC2. I have a many to many relationship, lets say between BlogPost and Tag entities. This means that in my T4 generated POCO BlogPost class I have: ...