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What are Unwind segues for and how do you use them?

... In a Nutshell An unwind segue (sometimes called exit segue) can be used to navigate back through push, modal or popover segues (as if you popped the navigation item from the navigation bar, closed the popover or dismissed the modally presented view controller). On to...
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jQuery `.is(“:visible”)` not working in Chrome

...n appended to a document since it depends on the applicable styles. All option elements are considered hidden, regardless of their selected state. During animations that hide an element, the element is considered visible until the end of the animation. During animations to show an ...
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Is it valid to have a html form inside another html form?

...ible practice. You can do the exact same thing with less hassle submitting all the data to a PHP script and dividing and sending to their own destinations from there. Although, you did answer the question which is great, it's just a bad and pointless practice because you could do it the right way in...
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Does ARC support dispatch queues?

...d as * Objective-C types when building with an Objective-C compiler. This allows * them to participate in ARC, in RR management by the Blocks runtime and in * leaks checking by the static analyzer, and enables them to be added to Cocoa * collections. * * NOTE: this requires explicit cancellati...
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Get Base64 encode file-data from Input Form

...beginning stuff (up to the first ,), but that's no biggie. This would take all the fun out though. The hard way: If you want to try it the hard way (or it doesn't work), look at readAsArrayBuffer(). This will give you a Uint8Array and you can use the method specified. This is probably only useful ...
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Suppress/ print without b' prefix for bytes in Python 3

... If we take a look at the source for bytes.__repr__, it looks as if the b'' is baked into the method. The most obvious workaround is to manually slice off the b'' from the resulting repr(): >>> x = b'\x01\x02\x03\x04' >>> print(repr(x)) b'\x01\x02...
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Is there a Mutex in Java?

...ock; import java.util.concurrent.locks.ReentrantLock; private final Lock _mutex = new ReentrantLock(true); _mutex.lock(); // your protected code here _mutex.unlock(); share | improve this answ...
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Conditional import of modules in Python

...ad of relying on the user; here's pySerial doing it as an example. serial/__init__.py import sys if sys.platform == 'cli': from serial.serialcli import Serial else: import os # chose an implementation, depending on os if os.name == 'nt': # sys.platform == 'win32': from se...
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Bash if statement with multiple conditions throws an error

...ions. tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html Update Actually you could still use && and || with the -eq operation. So your script would be like this: my_error_flag=1 my_error_flag_o=1 if [ $my_error_flag -eq 1 ] || [ $my_error_flag_o -eq 2 ] || ([ $my_error_flag -eq 1 ] ...
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what is the unsigned datatype?

...or unsigned long long int — float — double — long double — _Bool — float _Complex — double _Complex — long double _Complex — atomic type specifier — struct or union specifier — enum specifier — typedef name So in case of unsigned int we can either writ...