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Java packages com and org
...ges should be namespaced according to the inverse of your domain name, and then followed by whatever you see fit. Most companies or organisations have a .com, or .org domain name, and hence most packages start with com. or org.. To quote from the Sun Code Conventions:
The prefix of a unique package...
Why is '+' not understood by Python sets?
... the numbers 1 and 2, but any two different "things" would do the job) and then take the union of the two resulting sets. In the above example, I have used 'U' for set union to make it more similar to the usual mathematical notation; below I use the Python notation, i.e. '|' for union, and '&' f...
How do I check which version of NumPy I'm using?
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If you're using NumPy from the Anaconda distribution, then you can just do:
$ conda list | grep numpy
numpy 1.11.3 py35_0
This gives the Python version as well.
If you want something fancy, then use numexpr
It gives lot of information as you can see below:
In [692]: im...
When is assembly faster than C?
...directly: they recognize that when you cast 32-bit arguments to 64-bit and then multiply them, it doesn't need to do a full 64-bit multiply, but that a 32x32 -> 64 will do just fine. I checked and all of clang, gcc and MSVC in their current version get this right. This isn't new - I remember look...
The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity mem
...eTimeStart < tomorrow);
If future dates are not possible in your app, then >= x.DateTimeStart >= currentDateTime.Date is sufficient.
if you have more complex date comparisons, then check Canonical functions
and if you have EF6+ DB functions
More Generally - For people searching for issu...
Ruby: How to post a file via HTTP as multipart/form-data?
...t::Post.prepare_query("title" => my_string, "document" => my_file)
Then you just do a normal POST with Net::HTTP:
http = Net::HTTP.new(upload_uri.host, upload_uri.port)
res = http.start {|con| con.post(upload_uri.path, data, headers) }
Or however else you want to do the POST. The point i...
How do you match only valid roman numerals with a regular expression?
...... Remember English spellings were not formalized until the 1700s. Until then, as long as the reader could figure it out, it was good enough).
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Why doesn't Java Map extend Collection?
... exist is to simplify traversal so you don't have to traverse the keys and then do a lookup of the key. Don't take it as prima facie evidence that a Map should be a Set of entries (imho).
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Declaring variables inside a switch statement [duplicate]
... Generally, if the variable is used only within the single case, then enclosing the case section in { } will be better form (it avoids it being accidently reused later). If the variable is used againlater, then it really makes more sense to declare it before the start of the switch statem...
Good scalaz introduction [closed]
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I wrote a series of posts on my blog on this topic, and then compiled it together:
learning Scalaz
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