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What does addChildViewController actually do?
...of View Controller A, but still have View Controller B manage its view. In order for this to work properly, you need to ensure that View Controller B is getting the system events (read UIViewControllerDelegate callbacks). 'addChildViewController' hooks this up for you, to save you the effort of pass...
Why is whitespace sometimes needed around metacharacters?
...
Although not easily visible in the tatoo font, there's actually a Byte-Order Mark (BOM) between the brace and the colon (you may have been sufficiently intoxicated when you got the tatoo that you didn't notice it, but it's really there). This leaves three obvious possibilities:
You've failed t...
Go to particular revision
...made to patches. checkout the initial commit and then apply the patches in order after reading.
use git format-patch <initial revision> and then git checkout <initial revision>.
you should get a pile of files in your director starting with four digits which are the patches.
when you ...
Design patterns to avoid [closed]
...es come naturally in practice as you need to follow them to some degree in order to create isolated and repeatable unit tests.
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Will the Garbage Collector call IDisposable.Dispose for me?
...managed ones) are cleaned up, then you still want finalization to occur in order to do as much cleanup as possible. Better to move the GC.SuppressFinalize call into the Dispose() method after the call to Dispose(true). See Framework Design Guidelines and this post.
– BitMask777...
Does “display:none” prevent an image from loading?
... by providing some context to it.
And you can still use some CSS magic in order to hide the image on small devices:
<style>
picture { display: none; }
@media (min-width: 600px) {
picture {
display: block;
}
}
</style>
<picture>
<source srcset="the-real-i...
Comprehensive beginner's virtualenv tutorial? [closed]
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iOS start Background Thread
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What values should I use for CFBundleVersion and CFBundleShortVersionString?
...8601 standard format style (YYYYMMDDHHMM). For example, 201606070620. That order of year-month-date-hour-minute renders an ever-increasing number, always the same length due to padding zero, that when sorted alphabetically is also chronological.
I have successfully used this style of version number...
window.onload vs document.onload
...the load event.
A load event is dispatched at the window.
Therefore, the order of execution will be
DOMContentLoaded event listeners of window in the capture phase
DOMContentLoaded event listeners of document
DOMContentLoaded event listeners of window in the bubble phase
load event listeners (in...