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Is HttpClient safe to use concurrently?
In all the examples I can find of usages of HttpClient , it is used for one off calls. But what if I have a persistent client situation, where several requests can be made concurrently? Basically, is it safe to call client.PostAsync on 2 threads at once against the same instance of HttpClient .
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In what cases do I use malloc and/or new?
...careful though this is not correct:
//This is incorrect - may delete only one element, may corrupt the heap, or worse...
delete pBuffer;
Instead you should do this when deleting an array of data:
//This deletes all items in the array
delete[] pBuffer;
The new keyword is the C++ way of doing it...
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
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One easy trick that can help with most deadlocks is sorting the operations in a specific order.
You get a deadlock when two transactions are trying to lock two locks at opposite orders, ie:
connection 1: locks key(1), locks ...
What are unit tests, integration tests, smoke tests, and regression tests?
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Unit test: Specify and test one point of the contract of single method of a class. This should have a very narrow and well defined scope. Complex dependencies and interactions to the outside world are stubbed or mocked.
Integration test: Test the correc...
XPath OR operator for different nodes
...//cd" means among all child nodes and descendant of the root node find all ones named 'book' then find also all named 'cd'. If in the descendance of the root node there are only book nodes,your node-set will contain book nodes only. If in the descendance of the root node there are only cd nodes,yo...
C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?
... (SingleOrDefault), ToList will retrieve all entries first and then select one
– Sander Rijken
Sep 8 '11 at 13:51
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jQuery first child of “this”
...the children() function, which is very similar to find() but only searches one level deep in the hierarchy (which is all you need...):
element.children(":first").toggleClass("redClass");
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URL encoding in Android
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I'm going to add one suggestion here. You can do this which avoids having to get any external libraries.
Give this a try:
String urlStr = "http://abc.dev.domain.com/0007AC/ads/800x480 15sec h.264.mp4";
URL url = new URL(urlStr);
URI uri ...
Test or check if sheet exists
...ination workbook to the sheet with the same name as the currently iterated one in the origin workbook.
22 Answers
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Rubymine: How to make Git ignore .idea files created by Rubymine
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It is a bad practice to commit IDE specific files. One reason is that different developers may use different tools. Another one is that those files may contain user specific configuration which will get conflict all the time.
– Jordan Silva
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