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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable
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I think most postings missed the main point. Even if you use empty array or empty list, those are objects and they are stored in memory. Than Garbage Collector has to take care of them. If you are dealing with high throughput application, it could be noticeable imp...
How should I escape strings in JSON?
...ilt on JS, so it uses \uXXXX, where XXXX is a UTF-16 code unit. For code points outside the BMP, this means encoding surrogate pairs, which can get a bit hairy. (Or, you can just output the character directly, since JSON's encoded for is Unicode text, and allows these particular characters.)
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Case insensitive string as HashMap key
...ns. Algorithms are adaptations of those in Cormen, Leiserson, and Rivest's Introduction to Algorithms."
– James Schek
Feb 14 '15 at 0:25
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Handle ModelState Validation in ASP.NET Web API
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It's worth pointing out that the error response returned is controlled by the IncludeErrorDetailPolicy. By default the response to a remote request contains only a generic "An error has occurred" message, but setting this to IncludeErro...
How to export/import PuTTy sessions list?
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How do you import it into a different Putty on a different machine?
– Pete
Mar 10 '15 at 13:55
5
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SQL Joins Vs SQL Subqueries (Performance)?
...frastructure. We have a kind of query optimization engine underneath which converts the IN (...) clauses to join (if it was possible). But when you have a Group by on a well indexed column (based on its cardinality) then it will be much faster. So it really depends on the situation.
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mmap() vs. reading blocks
...r if you know you can share it with other processes (MAP_SHARED isn't very interesting if there is no actual sharing). Read files normally if you access data sequentially or discard it after reading. And if either method makes your program less complex, do that. For many real world cases there's ...
What is the difference between ExecuteScalar, ExecuteReader and ExecuteNonQuery?
...e,Delete).
Returns the count of rows effected by the Query.
Return type is int
Return value is optional and can be assigned to an integer variable.
ExecuteReader():
will work with Action and Non-Action Queries (Select)
Returns the collection of rows selected by the Query.
Return type is DataRead...
How do I get time of a Python program's execution?
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Yes, it gives a number of seconds. You can convert to min:seconds if you want. Look at Paul McGuire's answer and its secondsToStr() function.
– steveha
Dec 19 '13 at 6:48
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Xcode 5 & Asset Catalog: How to reference the LaunchImage?
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- (NSString *)splashImageNameForOrientation:(UIInterfaceOrientation)orientation {
CGSize viewSize = self.view.bounds.size;
NSString* viewOrientation = @"Portrait";
if (UIDeviceOrientationIsLandscape(orientation)) {
viewSize = CGSizeMake(viewSize.height...