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Why doesn't Dijkstra's algorithm work for negative weight edges?
...idea of it is: If we have a vertex in open such that its cost is minimal - by adding any positive number to any vertex - the minimality will never change.
Without the constraint on positive numbers - the above assumption is not true.
Since we do "know" each vertex which was "closed" is minimal - we...
Bootstrap 3 offset on right not left
...answer the question, all that has happened here is the col-xs-3 is wrapped by a row, which is why no further content has landed on that same line/row. if there was another col-xs-3 then it would be right next to the 1st col-xs-3 on the same row, so this answer does not answer the question. The answe...
How to request Administrator access inside a batch file
... If you know how many params there could be, you can pass parameters by including them after am_admin if not "%1"=="am_admin" (powershell start -verb runas '%0' 'am_admin "%~1" "%~2"' & exit) The params will be one above where they were
– Tony Brix
O...
Build vs new in Rails 3
...ship. This is the same effect that calling .new on a class would have in Ruby. That is to say that the documentation is clarifying that calling build on an association is the same is creating a new object (calling .new) and passing the foreign keys to that object. These commands are all equivalent:
...
How to pull remote branch from somebody else's repo
.../reponame.git HEAD:theirbranch
If working in detached state worries you, by all means create a branch using :ournameforbranch and replace FETCH_HEAD and HEAD above with ournameforbranch.
share
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i...
What characters are forbidden in Windows and Linux directory names?
...intable characters then there is more to check for.
Linux/Unix:
0 (NULL byte)
Windows:
0-31 (ASCII control characters)
Note: While it is legal under Linux/Unix file systems to create files with control characters in the filename, it might be a nightmare for the users to deal with such files....
Error: Can't set headers after they are sent to the client
...d', function(req, res) {
const { companyId } = req.params;
Company.findById(companyId).exec((err, company) => {
if (err) {
res.status(500).json(err);
} else if (!company) {
res.status(404).json(); // This runs.
}
res.status(200).json(company); // T...
Using AES encryption in C#
...ael.GenerateIV();
// Encrypt the string to an array of bytes.
byte[] encrypted = EncryptStringToBytes(original, myRijndael.Key, myRijndael.IV);
// Decrypt the bytes to a string.
string roundtrip = DecryptStringFromByt...
Is it good style to explicitly return in Ruby?
...honic" way) when it comes to style, I'm wondering if the same exists for Ruby. I've been using my own style guidelines but I'm thinking about releasing my source code, and I'd like it to adhere to any unwritten rules that might exist.
...
How to understand Locality Sensitive Hashing?
...ce between the two hashed value is 1, because their signatures only differ by 1 bit.
Considering the length of the signature, we can calculate their angular similarity as shown in the graph.
I have some sample code (just 50 lines) in python here which is using cosine similarity.
https://gist.gith...