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Dynamic type languages versus static type languages
What are the advantages and limitations of dynamic type languages compared to static type languages?
9 Answers
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Extracting bits with a single multiplication
...art: turning that into ab.......
A multiplication is a bunch of shift-and-add operations. The key is to allow overflow to "shift away" the bits we don't need and put the ones we want in the right place.
Multiplication by 4 (00000100) would shift everything left by 2 and get you to a00b0000 . To g...
How can we match a^n b^n with Java regex?
...tainly write a Java regex pattern to match anbn. It uses a positive lookahead for assertion, and one nested reference for "counting".
Rather than immediately giving out the pattern, this answer will guide readers through the process of deriving it. Various hints are given as the solution is slowly c...
Perforce for Git users? [closed]
...e from the Perforce web site. It does need to be installed by the Perforce administrator, but if you install it you will find that its repository slicing feature can be quite handy as a Git user.
If you can't convince your admin to install Git Fusion, Git itself comes with a Perforce binding called...
How are msys, msys2, and msysgit related to each other?
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Disclaimer: I am an MSYS2 developer
While MSYS isn't dead, I would say it's not looking very healthy either. It is a project started by the MinGW team many years ago as a fork of Cygwin that never kept up with Cygwin.
msysgit is a fork of a slightly older version of MSYS with so...
Load RSA public key from file
...vate_key.pem 2048
Convert private Key to PKCS#8 format (so Java can read it)
$ openssl pkcs8 -topk8 -inform PEM -outform DER -in private_key.pem -out private_key.der -nocrypt
Output public key portion in DER format (so Java can read it)
$ openssl rsa -in private_key.pem -pubout...
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 probability of the tiles, i.e. 10% for ...
Using Java with Nvidia GPUs (CUDA)
...lel. The first one refers, roughly speaking, to problems where several threads are working on their own tasks, more or less independently. The second one refers to problems where many threads are all doing the same - but on different parts of the data.
The latter is the kind of problem that GPUs a...
Python str vs unicode types
Working with Python 2.7, I'm wondering what real advantage there is in using the type unicode instead of str , as both of them seem to be able to hold Unicode strings. Is there any special reason apart from being able to set Unicode codes in unicode strings using the escape char \ ?:
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Is MATLAB OOP slow or am I doing something wrong?
...e great to be able to do things like a + b , a == b , a.find( b ) instead
of strcat( a b ) , strcmp( a, b ) , retrieve first element of strfind( a, b ) , etc.
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