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When should I use Lazy?
...revent user latency in high throughput, low latency systems. This is just one of the many reasons to not "always" use Lazy.
– Derrick
Sep 30 '14 at 12:34
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What is the C# version of VB.net's InputDialog?
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To sum it up:
There is none in C#.
You can use the dialog from Visual Basic by adding a reference to Microsoft.VisualBasic:
In Solution Explorer right-click on the References folder.
Select Add Reference...
In the .NET tab (in newer Visual Studi...
Test whether a list contains a specific value in Clojure
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Ah, contains?... supposedly one of the top five FAQs re: Clojure.
It does not check whether a collection contains a value; it checks whether an item could be retrieved with get or, in other words, whether a collection contains a key. This makes sense f...
Android Facebook integration with invalid key hash
In one of my apps I need to get data from Facebook... I am doing this:
25 Answers
25
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How to loop through files matching wildcard in batch file
... batch file (in Windows XP) which goes through all the filenames, for each one it should:
7 Answers
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Generate a Hash from string in Javascript
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This is the same one used in Java. The hash << 5 - hash is the same as hash * 31 + char but a LOT faster. It's nice because it's so fast, and 31 is a small prime. Win win there.
– corsiKa
Sep 30 '1...
Booleans, conditional operators and autoboxing
...rands are Boolean and boolean respectively, so this clause applies:
If one of the second and third operands is of type boolean and the type of the other is of type Boolean, then the type of the conditional expression is boolean.
Since the type of the expression is boolean, the 2nd operand must...
Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?
...results, whatever the version of Python (both existing and, likely, future ones)?
6 Answers
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What exactly are “spin-locks”?
...uld use spinlocks wherever possible?" and I'll try to answer it:
As I mentioned, Spinlocks are only useful in places where anticipated waiting time is shorter than a quantum (read: milliseconds) and preemption doesn't make much sense (e.g. kernel objects aren't available).
If waiting time is unknown...
Python progression path - From apprentice to guru
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One good way to further your Python knowledge is to dig into the source code of the libraries, platforms, and frameworks you use already.
For example if you're building a site on Django, many questions that might stump you c...