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How to get name of exception that was caught in Python?
..._
return module + '.' + obj.__class__.__name__
Example:
try:
# <do something with sqlalchemy that angers the database>
except sqlalchemy.exc.SQLAlchemyError as e:
print(get_full_class_name(e))
# sqlalchemy.exc.IntegrityError
...
What is meant by Scala's path-dependent types?
..., height: Int) {
case class Coordinate(x: Int, y: Int) {
require(0 <= x && x < length && 0 <= y && y < height)
}
val occupied = scala.collection.mutable.Set[Coordinate]()
}
val b1 = Board(20, 20)
val b2 = Board(30, 30)
val c1 = b1.Coordinate(15, 15)
v...
What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
...ectory, you can type:
http-server [path] [options]
Path is optional, defaulting to ./public if it exists, otherwise ./.
Options are [defaults]:
-p The port number to listen on [8080]
-a The host address to bind to [localhost]
-i Display directory index pages [True]
-s or --silent Silent mode won't...
File name? Path name? Base name? Naming standard for pieces of a path
...------ --------------- ---------------
Root name c: <empty>
Root directory \ /
Root path c:\ /
Relative path foo\bar\baa.txt foo/bar/baa.txt
Parent path c:\foo\bar /foo/bar
Filename baa.txt baa.txt
Stem ...
What is the advantage to using bloom filters?
I am reading up on bloom filters and they just seem silly. Anything you can accomplish with a bloom filter, you could accomplish in less space, more efficiently, using a single hash function rather than multiple, or that's what it seems. Why would you use a bloom filter and how is it useful?
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Advantage of switch over if-else statement
...eudo-recursive if-else chains in template meta programming, and the difficulty of generating switch case chains, that mapping may become more important. (and yes, ancient comment, but the web is forever, or at least until next tuesday)
– Yakk - Adam Nevraumont
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How to create duplicate allowed attributes
... attribute onto your Attribute class (yep, that's mouthful) and set AllowMultiple to true:
[AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
public sealed class MyCustomAttribute: Attribute
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lock(new object()) — Cargo cult or some crazy “language special case”?
I'm reviewing some code written by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet:
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
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The proper function is int fileno(FILE *stream). It can be found in <stdio.h>, and is a POSIX standard but not standard C.
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Has anyone actually implemented a Fibonacci-Heap efficiently?
...mpare Fibonacci heaps and binary heaps. (In the line typedef relaxed_heap<Vertex, IndirectCmp, IndexMap> MutableQueue, change relaxed to fibonacci.) I first forgot to compile with optimizations, in which case Fibonacci and binary heaps perform about the same, with Fibonacci heaps usually out...