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Eclipse comment/uncomment shortcut?
... to change the shortcuts for Swedish users?
– David Mårtensson
Sep 9 '13 at 22:30
1
@DavidMårte...
On design patterns: When should I use the singleton?
The glorified global variable - becomes a gloried global class. Some say breaking object-oriented design.
19 Answers
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What is the optimal algorithm for the game 2048?
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I developed a 2048 AI using expectimax optimization, instead of the minimax search used by @ovolve's algorithm. The AI simply performs maximization over all possible moves, followed by expectation over all possible tile spawns (weighted by the ...
What is the 'cls' variable used for in Python classes?
...ered Jan 6 '11 at 8:21
Juho VepsäläinenJuho Vepsäläinen
23.9k1111 gold badges7272 silver badges9898 bronze badges
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Convert a list to a string in C#
...d Feb 12 '11 at 23:46
Øyvind BråthenØyvind Bråthen
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How to convert C# nullable int to int
...r are all correct; I just wanted to add one more that's slightly cleaner:
v2 = v1 ?? default(int);
Any Nullable<T> is implicitly convertible to its T, PROVIDED that the entire expression being evaluated can never result in a null assignment to a ValueType. So, the null-coalescing operator ?...
How can I override Bootstrap CSS styles?
...Dec 21 '13 at 17:04
Markus KottländerMarkus Kottländer
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Finding quaternion representing the rotation from one vector to another
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Quaternion q;
vector a = crossproduct(v1, v2);
q.xyz = a;
q.w = sqrt((v1.Length ^ 2) * (v2.Length ^ 2)) + dotproduct(v1, v2);
Don't forget to normalize q.
Richard is right about there not being a unique rotation, but the above should give the "shortest arc," which...
How do I do a case-insensitive string comparison?
...trings in all instances and therefore the normalization needs to be done ('å' vs. 'å'). D145 introduces "canonical caseless matching":
import unicodedata
def NFD(text):
return unicodedata.normalize('NFD', text)
def canonical_caseless(text):
return NFD(NFD(text).casefold())
NFD() is c...
Regular Expressions: Is there an AND operator?
...ed Jan 22 '09 at 18:07
Juha SyrjäläJuha Syrjälä
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