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Published on 2010-03-11T09:26:57Z
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2010/03/11
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Hit count: 133
(n >= 3 ) && (n <= 99)
OR
n `elem` [3..99]
Which one is faster and why?
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Trying to learn Haskell. I am trying to write a simple function to remove a number from a list without using built-in function (delete...I think). For the sake of simplicity, let's assume that the input parameter is an Integer and the list is an Integer list. Here is the code I have, Please tell me…
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I'm trying to use Haskells Data.Heap module, but I'm incapable of even using it with integers. The only heap I've been capable of using is "empty", which does not take any arguments.
Later on I'll figure out how to instance for my needs, but for now I'd be glad if I was even able to test it with…
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There has been some intermingling of Scala and Haskell communities, and I have noticed now and then people commenting on stuff that's supposed to be easy in Haskell and hard and Scala. Less often (maybe because I read Scala questions, not Haskell ones), I see someone mentioning that something in Scala…
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I have problems installing ghc-mod on my linux machine. cabal worries about "happy" not being available in versione = 1.17:
$ cabal install ghc-mod
Resolving dependencies...
[1 of 1] Compiling Main ( /tmp/haskell-src-exts-1.14.0-1357/haskell-src-exts-1.14.0/Setup.hs, /tmp/haskell-src-exts-1…
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fibs :: [Int]
fibs = 0 : 1 : [ a + b | (a, b) <- zip fibs (tail fibs)]
This generates the Fibonacci sequence.
I understand the behaviour of the guards, of :, zip and tail, but I don't understand <-. What is it doing here?
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So I've been getting into a bit of assembly lately and I'm a beginner so i was wondering if someone could clarify something. I take it every process has it's own set of registers, and each thread can modify these registers right?. How then do multiple threads use the same registers without causing…
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I'm a beginner learning some assembly, when preserving the ESP register before a function call does it matter if you do it by adding or subtracting? hard to explain, consider the following
mov esi, esp
sub esp, 12 // on 32bit OS this would mean that there are 3 arguments to the function
// push,…
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Sorry if I am not supposed to post beginner level questions here..I am new to this site
Please read the code below first
I am confused about getchar() 's role in the following code.. I mean I know its helping me see the output window which will only be closed when I press enter key
So getchar()…
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Learning new technologies can be daunting. If you’ve never used a Mac before, you’ll probably be a bit baffled at first. But, you’re probably at least coming from a desktop computing background (Windows), so you common frame of reference.
But what if you’re just now learning…
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My brother is just starting out college. He's studying the same thing I am here in Bolivia; Systems Engineer which is the equivalent of what a CS degree is in the US.
Being his big brother and a programmer myself I really want to guide him and give him the right material to learn and become good…
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