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The order of keys in dictionaries
...as a simplified example; it may or may not have any relation to how he actually plans to use it. I have previously encountered people who expected OrderedDict to return arbitrary insertions in sorted order, and so I felt I should point this out.
– Hugh Bothwell
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In Postgresql, force unique on combination of two columns
...I like the suggestion of a primary key over unique here, because we do not allow NULL values in this case. From the PostgeSQL docs: "Note that a unique constraint does not, by itself, provide a unique identifier because it does not exclude null values.)" postgresql.org/docs/8.1/static/ddl-constraint...
Easiest way to detect Internet connection on iOS?
... connection to the specific host is routable. That doesn't mean you're actually able to connect. Example: you connect your iPhone's wifi to your camera's wifi. Wifi is connected with a default gateway: all hosts will report reachable. But they are actually not -- the camera is a dead-end connection....
Performance - Date.now() vs Date.getTime()
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These things are the same (edit semantically; performance is a little better with .now()):
var t1 = Date.now();
var t2 = new Date().getTime();
However, the time value from any already-created Date instance is frozen at the time of its construction (or at whateve...
Effective way to find any file's Encoding
... == 0xff) return new UTF32Encoding(true, true); //UTF-32BE
// We actually have no idea what the encoding is if we reach this point, so
// you may wish to return null instead of defaulting to ASCII
return Encoding.ASCII;
}
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Can anybody find the TFS “Unshelve” option in Visual Studio 2012?
..."Find Shelvesets", then right click on the shelve you want to unshelve, finally "Unshelve".
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Commit changes to a different branch than the currently checked out branch with subversion
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I recommend not to choose the root folder with all the irrelevant sub-folders which are not subject to be modified in the branch. Later it will be easier to merge the (smaller) branch back to trunk.
– J Pollack
Mar 5 '15 at 9:24
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How to manually deprecate members
...ike Objective-C, Swift has no preprocessor, so is there still a way to manually deprecate members of a class?
4 Answers
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In C#, how can I create a TextReader object from a string (without writing to disk)
...text into a webpage. The Fast CSV reader requires a TextReader object, and all I have is a string. What's the best way to convert a string into a TextReader object on the fly?
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Stop handler.postDelayed()
I call multiple Handlers by new Handler().postDelayed(new Runnable().....
How can I stop it when I click on back?
4 Answer...