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Is if(items != null) superfluous before foreach(T item in items)?
...roduces less memory pressure. Enumerable.Empty<string> would be even more preferable because it caches the empty array it generates and re-uses it.
– Eric Lippert
Jun 23 '11 at 14:23
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Using Node.js only vs. using Node.js with Apache/Nginx
...t scenarios, but this is unlikely to be the norm). On top of files serving more efficiently, you won't have to worry about handling eTags or cache control headers the way you would if you were servings things out of Node. Some frameworks may handle this for you, but you would want to be sure. Regard...
How do I get the current date and time in PHP?
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OP never asked about timezone. A simpler and more correct answer would simply show server time.
– AyexeM
Feb 21 '14 at 16:38
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Handling a colon in an element ID in a CSS selector [duplicate]
...See mothereffingcssescapes.com/#search_form%3Aexpression and my answer for more information.
– Mathias Bynens
Jul 6 '11 at 5:32
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How do I get the current GPS location programmatically in Android?
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I've heard people say getLastKnownLocation() is a more "stale" location -- why is this? Does calling getLastKnownLocation() not get the latest GPS read of phone's GPS?
– Don Cheadle
Aug 23 '15 at 0:20
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ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller
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Advantages of Binary Search Trees over Hash Tables
...y Search Trees (reference-based) are memory-efficient. They do not reserve more memory than they need to.
For instance, if a hash function has a range R(h) = 0...100, then you need to allocate an array of 100 (pointers-to) elements, even if you are just hashing 20 elements. If you were to use a bin...
ImportError: No module named Crypto.Cipher
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Just to add to this a little more, in my case this wasn't working as I had multiple versions of Python interpreters on my machine and I was installing the libraries in different versions. What I did was moved into the virtual environment and it worked as...
How to map a composite key with JPA and Hibernate?
...l point of view, there are no differences
@EmbeddedId somehow communicates more clearly that the key is a composite key and IMO makes sense when the combined pk is either a meaningful entity itself or it reused in your code.
@IdClass is useful to specify that some combination of fields is unique but...
Detect whether there is an Internet connection available on Android [duplicate]
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