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What are Unwind segues for and how do you use them?
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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...
XmlWriter to Write to a String Instead of to a File
.... If you happen to omit the using() and instead declare your XmlWriter normally then make sure to call xw.Flush before you call sw.ToString() or else you may not get all content! (Obviously better to use the using brackets...)
– Ravendarksky
Jul 16 '14 at 10:34...
What is the difference between a framework and a library?
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Actually these terms can mean a lot of different things depending the context they are used.
For example, on Mac OS X frameworks are just libraries, packed into a bundle. Within the bundle you will find an actual dynamic librar...
How to produce a range with step n in bash? (generate a sequence of numbers with increments)
...course seq 0 2 10 will produce the same output on its own).
Note that seq allows floating-point numbers (e.g., seq .5 .25 3.5) but bash's brace expansion only allows integers.
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Detect URLs in text with JavaScript
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Finally a regex that really works in most obvious case! This one deserves a bookmarking. I tested thousands examples from googles search until i find this.
– Ismael
Jan 16 '15 at 15:11
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Is Meyers' implementation of the Singleton pattern thread safe?
...rently while the variable is being initialized, the concurrent execution shall wait for completion of the initialization.
GCC and VS support for the feature (Dynamic Initialization and Destruction with Concurrency, also known as Magic Statics on MSDN) is as follows:
Visual Studio: supported sinc...
Difference between .tagName and .nodeName
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The tagName property is meant specifically for element nodes (type 1 nodes) to get the type of element.
There are several other types of nodes as well (comment, attribute, text, etc.). To get the name of any of the various node types, you can use the nodeName p...
How to remove the arrow from a select element in Firefox
... have done nothing.
I've come up with a simple workaround.
This essentially strips all formatting of the select box in firefox and wraps a span element around the select box with your custom style, but should only apply to firefox.
Say this is your select menu:
<select class='css-select'&...
What's the best way to iterate over two or more containers simultaneously
...wrote this wrapper around boost range: a function with one line of code is all I need. However, I would be interested if the performance of boost ranges is optimal as well.
– SebastianK
Nov 6 '14 at 15:45
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Regular expression for letters, numbers and - _
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To actually cover your pattern, i.e, valid file names according to your rules, I think that you need a little more. Note this doesn't match legal file names from a system perspective. That would be system dependent and more libera...