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How to automatically generate N “distinct” colors?
...arge the colors can start to look similar. I can also imagine evenly subdividing the RGB cube into a lattice and then drawing points. Does anyone know any other methods? I'm ruling out defining a list and then just cycling through it. I should also say I don't generally care if they clash or don't l...
Knight's Shortest Path on Chessboard
...alt
previous[v] := u
return dist[]
EDIT:
as moron, said using the
http://en.wikipedia.org/wiki/A*_algorithm
can be faster.
the fastest way, is
to pre-calculate all the distances
and save it to a 8x8 full matrix.
well, I would call that cheating,
and works only because the probl...
In SQL Server, when should you use GO and when should you use semi-colon ;?
...SQL, it just tells SSMS to send the SQL statements between each GO in individual batches sequentially.
The ; is a SQL statement delimiter, but for the most part the engine can interpret where your statements are broken up.
The main exception, and place where the ; is used most often is before a Co...
“Diff” an image using ImageMagick
...mpose darken -composite ')' \
-channel RGB -combine diff.png
The idea is follows: convert both file1.png and file2.png to grayscale. Then trat the first as the red channel of the resulting image, the second as the green channel. The blue channel is formed from these two using the darken co...
What does gcc's ffast-math actually do?
... --ffast-math flag can greatly increase speed for float ops, and goes outside of IEEE standards, but I can't seem to find information on what is really happening when it's on. Can anyone please explain some of the details and maybe give a clear example of how something would change if the flag was ...
Master-master vs master-slave database architecture?
...n everybody is out of the water, and if people are remote then may pay horrid communication costs. Bring portable devices, which may need to operate disconnected, into the picture and one copy won't cut it.
Master Slave: consistency is not too difficult because each piece of data has exactly one ow...
Why escape_javascript before rendering a partial?
... javascript. Nothing can prevent that.
– LasagnaAndroid
Feb 23 '15 at 1:31
3
This isn't helpful. ...
Why use Ruby's attr_accessor, attr_reader and attr_writer?
...e
@age
end
Knowing that, here's another way to think about it: If you did not have the attr_... helpers, and had to write the accessors yourself, would you write any more accessors than your class needed? For example, if age only needed to be read, would you also write a method allowing it to b...
Creating instance of type without default constructor in C# using reflection
...
namespace NoConstructorThingy
{
class Program
{
static void Main(string[] args)
{
MyClass myClass = (MyClass)FormatterServices.GetUninitializedObject(typeof(MyClass)); //does not call ctor
myClass.One = 1;
Console.WriteLine(myClass.One); ...
The difference between the 'Local System' account and the 'Network Service' account?
...LocalService
the account has no password (any password information you provide is ignored)
HKCU represents the LocalService user account
has minimal privileges on the local computer
presents anonymous credentials on the network
SID: S-1-5-19
has its own profile under the HKEY_USERS registry key (HKE...