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Code Golf: Lasers
...t; 160 chars.
Solution had 166 strokes when this contest ended, but A. Rem>x m> has found a couple ways to shave off 6 more characters:
s!.!$t{$s++}=$&!ge,$s=$r+=99for<>;%d='>.^1<2v3'=~/./g;($r)=grep$d|=$d{$t{$_}},%t;
{$_=$t{$r+=(1,-99,-1,99)[$d^=3*/\\/+m</>]};/[\/\\ ]/&&...
Applicatives compose, monads don't
... values. This really bites. Compare
miffy :: Monad m => m Bool -> m m>x m> -> m m>x m> -> m m>x m>
miffy mb mt mf = do
b <- mb
if b then mt else mf
which uses the result of some effect to decide between two computations (e.g. launching missiles and signing an armistice), whereas
iffy :: Appl...
Create code first, many to many, with additional fields in association table
... you now want to find all comments of members with LastName = "Smith" for em>x m>ample you can write a query like this:
var commentsOfMembers = contem>x m>t.Members
.Where(m => m.LastName == "Smith")
.SelectMany(m => m.MemberComments.Select(mc => mc.Comment))
.ToList();
... or ...
var...
Modular multiplicative inverse function in Python
...te modular multiplicative inverse of a number, i.e. a number y = invmod(m>x m>, p) such that m>x m>*y == 1 (mod p) ? Google doesn't seem to give any good hints on this.
...
How do you match only valid roman numerals with a regular em>x m>pression?
...hinking about my other problem , i decided I can't even create a regular em>x m>pression that will match roman numerals (let alone a contem>x m>t-free grammar that will generate them)
...
What integer hash function are good that accepts an integer hash key?
...uld pick a multiplier that is in the order of your hash size (2^32 in the em>x m>ample) and has no common factors with it. This way the hash function covers all your hash space uniformly.
Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if your integers are all ...
Why is it slower to iterate over a small string than a small list?
...doing the same operation on a list of small single character strings. Any em>x m>planation? It's almost 1.35 times as much time.
...
How to find list of possible words from a letter matrim>x m> [Boggle Solver]
...know this game as Boggle. Essentially, when the game starts you get a matrim>x m> of letters like so:
35 Answers
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How do I declare a 2d array in C++ using new?
...f T" and be an incomplete type, while T[][] would be an invalid type (all em>x m>cept the last dimensions must have a known size). T[N][M] is "array [N] of array[M] of T", while yours, T[sizem>X m>] is "array [sizem>X m>] of T" where T is a pointer to an int. Creating a dynamically 2d array works like this: new in...
What are free monads?
... some time, but everyone just seems to use/discuss them without giving an em>x m>planation of what they are. So: what are free monads? (I'd say I'm familiar with monads and the Haskell basics, but have only a very rough knowledge of category theory.)
...