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When and how should I use a ThreadLocal variable?
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One possible (and common) use is when you have some object that is not thread-safe, but you want to avoid synchronizing access to that object (I'm looking at you, SimpleDateFormat). Instead, give each thread its own instance of the object...
Non-static variable cannot be referenced from a static context
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You must understand the difference between a class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with t...
SQL Server: Get data for only the past year
...ode - which I'm posting here for any others who have the same need as mine and who may come across this page in searching for a solution.
SELECT .... FROM .... WHERE year(*your date column*) = year(DATEADD(year,-1,getdate()))
Thanks to those above whose solutions helped me arrive at what I needed...
Async call with await in HttpClient never returns
... C# metro application on the Win8 CP; this call simply hits a web service and returns JSON data.
3 Answers
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Remove Select arrow on IE
...ve the arrow, then i can add other icon..
i can do that for Firefox Safari and Chrome,
but this didn't work on IE9 .
3 Ans...
Rails migration for change column
...yan: as far as I know, the only magical words in migration names are "add" and "remove".
– Alex Korban
May 10 '10 at 22:57
1
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UIDevice uniqueIdentifier deprecated - What to do now?
...ght that the UIDevice uniqueIdentifier property is deprecated in iOS 5 and unavailable in iOS 7 and above. No alternative method or property appears to be available or forthcoming.
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Moving and vanishing lines of code; trouble with Eclipse's XML Editor
...now available in ADT 21 Preview 9, posted a few minutes ago, here: https://android-review.googlesource.com/#/c/44936/1
The reason you get weird visual artifacts is that if a file contains broken DOS line endings (multiple carriage returns without a newline for each carriage return), Eclipse gets ve...
How can I initialize base class member variables in derived class constructor?
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You can't initialize a and b in B because they are not members of B. They are members of A, therefore only A can initialize them. You can make them public, then do assignment in B, but that is not a recommended option since it would destroy encapsu...
How do I measure request and response times at once using cURL?
... have a web service that receives data in JSON format, processes the data, and then returns the result to the requester.
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