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Colorized grep — viewing the entire file with highlighted matches
...r=always flag to be tremendously useful. However, grep only prints lines with matches (unless you ask for context lines). Given that each line it prints has a match, the highlighting doesn't add as much capability as it could.
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How to find serial number of Android device?
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TelephonyManager tManager = (TelephonyManager)myActivity.getSystemService(Context.TELEPHONY_SERVICE);
String uid = tManager.getDeviceId();
getSystemService is a method from the Activity class. getDeviceID() will return the MDN or MEID of the device depending on which radio t...
Why can't an anonymous method be assigned to var?
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Others have already pointed out that there are infinitely many possible delegate types that you could have meant; what is so special about Func that it deserves to be the default instead of Predicate or Action or any other possibility? And, for lambdas, why is it obvious that ...
Should import statements always be at the top of a module?
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Module importing is quite fast, but not instant. This means that:
Putting the imports at the top of the module is fine, because it's a trivial cost that's only paid once.
Putting the imports within a function will cause calls to that function to...
How far can memory leaks go?
... memory is cleaned up at least when the program terminates. Are there any situations where leaked memory won't be collected when the program terminates, or crashes?
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Storing Images in DB - Yea or Nay?
...is? I'm more of a type to store the location in the filesystem, than store it directly in the DB.
56 Answers
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WKWebView in Interface Builder
It seems that the IB object templates in XCode 6 beta are still creating old-style objects (UIWebView for iOS and WebView for OSX). Hopefully Apple will update them for the modern WebKit, but until then, what is the best way to create WKWebViews in Interface Builder? Should I create a basic view (...
Why are floating point numbers inaccurate?
...s, floating point numbers are represented a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason...
How to use Namespaces in Swift?
The documentation only mentions nested types, but it's not clear if they can be used as namespaces. I haven't found any explicit mentioning of namespaces.
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What does MissingManifestResourceException mean and how to fix it?
The situation:
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