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Advantage of switch over if-else statement
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This immediate-constant bitmap is a big win, because there's no cache miss on the bitmap. It works if the "special" error codes are all in a range 64 or less. (or 32 for legacy 32bit code.) The compiler subtracts the smallest case value, if it's non-zero. The t...
WAMP/XAMPP is responding very slow over localhost
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I had the same problem running on Windows 8 running on 64bit. Apache is really slow but when you press F5 many times it goes ok. In the end i after doing many things managed to solve it. Right now it works fast.
Try the following tasks to increase the perfo...
Why does Convert.ToString(null) return a different value if you cast null?
...ase string is more specific than object and hence it will be picked as the winner.
In the null as object you've solidified the type of the expression as object. This means it's no longer compatible with the string overload and the compiler picks the object overload as it's the only compatible on...
What does Serializable mean?
...rder to explain the idea:
Let's say you have a class person like the following:
public class Person implements java.io.Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
public String firstName;
public String lastName;
public int age;
public...
log4net vs. Nlog
...sses up ip address resolution between IPv4/IPv6 for localhost on Vista and Win7 (several unofficial patches are floating around) * Doesn't compile in .Net 4.0 Client Profile
– Tormod Hystad
Jan 13 '11 at 10:28
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Difference between “managed” and “unmanaged”
... consequences of using either of them? Does this distinction exist in .NET/Windows only?
3 Answers
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How are the points in CSS specificity calculated
... = 0100h = 256 0,0,15,0 = 00f0h = 240 256 > 240 so the id selector wins.
– Matthew Wilson
May 11 '10 at 9:08
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python setup.py uninstall
...rgs to do the removal:
xargs rm -rf < files.txt
Or if you're running Windows, use Powershell:
Get-Content files.txt | ForEach-Object {Remove-Item $_ -Recurse -Force}
Then delete also the containing directory, e.g. /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packag...
Hashset vs Treeset
...tation of bubble sort (O(N^2) avg/worst) for 10 elements. Bubble sort will win every time. The point is algorithms classes teach everyone to think about approximations using time-complexity but in the real world the constant factors MATTER frequently.
– Peter Oehlert
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.NET - Dictionary locking vs. ConcurrentDictionary
... Or, what if two customers reaches for the same item at the same time, who wins? Will there be a fight? This is a non-threadsafe-collection. There's plenty of ways to avoid problems, but they all require some kind of locking, or rather explicit access in some way or another.
On the other hand, cons...