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Execution of Python code with -m option or not
...etween:
python foo/bar/baz.py
and
python -m foo.bar.baz
as in the latter case, foo.bar is imported and relative imports will work correctly with foo.bar as the starting point.
Demo:
$ mkdir -p test/foo/bar
$ touch test/foo/__init__.py
$ touch test/foo/bar/__init__.py
$ cat << EOF > test/f...
Difference between timestamps with/without time zone in PostgreSQL
...greSQL when the data type is WITH TIME ZONE versus WITHOUT TIME ZONE ? Can the differences be illustrated with simple test cases?
...
Writing your own STL Container
...eudo-container I pieced together from § 23.2.1\4 Note that the iterator_category should be one of std::input_iterator_tag, std::output_iterator_tag,std::forward_iterator_tag,std::bidirectional_iterator_tag,std::random_access_iterator_tag. Also note that the below is technically more strict than r...
Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?
...e other references, creating a deep graph of dependencies, like this:
Because the dependency graph is deep, it means that most libraries drag along a lot of other dependencies - e.g. in the diagram, Library C drags along Library H, Library E, Library J, Library M, Library K and Library N. This ma...
How are strings passed in .NET?
...
A reference is passed; however, it's not technically passed by reference. This is a subtle, but very important distinction. Consider the following code:
void DoSomething(string strLocal)
{
strLocal = "local";
}
void Main()
{
string strMain = "main";
DoSomethin...
Regular expressions in C: examples?
...r, "Regex match failed: %s\n", msgbuf);
exit(1);
}
/* Free memory allocated to the pattern buffer by regcomp() */
regfree(&regex);
Alternatively, you may want to check out PCRE, a library for Perl-compatible regular expressions in C. The Perl syntax is pretty much that same syntax used in...
What are type lambdas in Scala and what are their benefits?
... specify one of the types; the other of course is supplied at the time you call point or bind.
The type lambda trick exploits the fact that an empty block in a type position creates an anonymous structural type. We then use the # syntax to get a type member.
In some cases, you may need more sophis...
Catching an exception while using a Python 'with' statement
To my shame, I can't figure out how to handle exception for python 'with' statement. If I have a code:
4 Answers
...
What is the meaning of “non temporal” memory accesses in x86
...-Temporal SSE instructions (MOVNTI, MOVNTQ, etc.), don't follow the normal cache-coherency rules. Therefore non-temporal stores must be followed by an SFENCE instruction in order for their results to be seen by other processors in a timely fashion.
When data is produced and not (immediately) consum...
Redis strings vs Redis hashes to represent JSON: efficiency?
I want to store a JSON payload into redis. There's really 2 ways I can do this:
3 Answers
...