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How do you convert a byte array to a hexadecimal string, and vice versa?

...t a String. String myValue = 10.ToString("X"); myValue is "A" not "0A". Now go read that string back into bytes, oops you broke it. – 00jt Jan 30 '13 at 19:25 ...
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Undefined reference to `pow' and `floor'

... an error, but pow, floor, and printf functions have undefined references, now if I will try to link this to executable: $ gcc fib.o fib.o: In function `fibo': fib.c:(.text+0x57): undefined reference to `pow' fib.c:(.text+0x84): undefined reference to `floor' collect2: error: ld returned 1 exit sta...
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Can I mix MySQL APIs in PHP?

...with these different APIs? Am I the ignorant one here? This being for the "now deleted" question stackoverflow.com/q/34209127 only viewable by 10K+ members should anyone wonder. This in relation to $stmt3->execute(array('classID' => $_POST['class'],'studentID' => mysql_real_escape_string($s...
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Xcode stuck at “Your application is being uploaded”

...file. And that's it !! You can easily upload your binary file to App store now. If the above methods still doesn't help then follow this fourth method: Regenerate your certificate Goto iOS developer portal (https://developer.apple.com/membercenter). Revoke current certificate which is used by yo...
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Get to UIViewController from UIView?

... there a built-in way to get from a UIView to its UIViewController ? I know you can get from UIViewController to its UIView via [self view] but I was wondering if there is a reverse reference? ...
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In Scala how do I remove duplicates from a list?

... scala.collection.immutable.List now has a .distinct method. So calling dirty.distinct is now possible without converting to a Set or Seq. share | improve ...
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Linux - Install redis-cli only

... now it isn't working http://security.ubuntu.com/ubuntu bionic-updates/universe amd64 redis-tools amd64 5:4.0.9-1ubuntu0.1 returns 404 Not Found – Andrew Sneck Nov 25 '19 at 9:28 ...
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Why aren't pointers initialized with NULL by default?

...ion point was he/she needed to perform some operation and then assign. So now we have the situation that the compiler has added an extra instruction to the code that initializes the variable to NULL then later the developer code is added to do the correct initialization. Or under other conditions t...
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Python decorators in classes

... Thanks Michael, only now saw that this is what I wanted. – hcvst Jan 18 '11 at 16:05 2 ...
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Having Django serve downloadable files

...e all headers are encoded to ascii format before sending. Only way that I know of to circumvent this problem is to reduce X-sendfile filenames to ones that consists only ascii. – Ciantic May 31 '10 at 16:13 ...