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Does Java have a HashMap with reverse lookup?
...ch class in the Java API. The Apache Commons class you want is going to be one of the implementations of BidiMap.
As a mathematician, I would call this kind of structure a bijection.
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improv...
JUnit test with dynamic number of tests
... testEveryFileInDirectory method in the TestCase this shows up as only one test that may fail or succeed. But I am interested in the results on each individual file. How can I write a TestCase / TestSuite such that each file shows up as a separate test e.g. in the graphical TestRunner of Ecl...
Can enums be subclassed to add new elements?
... with numbers, with no automatic validation or anything. IMO enums are the one bit of Java which is actually better than C#.
– Jon Skeet
Nov 13 '10 at 13:21
21
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Design Patterns: Factory vs Factory method vs Abstract Factory
...uit: Apple and Orange.
Factory
Factory is "fixed", in that you have just one implementation with no subclassing. In this case, you will have a class like this:
class FruitFactory {
public Apple makeApple() {
// Code for creating an Apple here.
}
public Orange makeOrange() {
// Cod...
How do I find the PublicKeyToken for a particular dll?
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Thanks! your method is the only one that worked for me sn -T dllname.dll would only show help text when I ran it
– Vdex
Sep 24 '14 at 8:52
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What are the differences between “=” and “
...vel (e.g.,
in the complete expression typed at the command prompt) or as one
of the subexpressions in a braced list of expressions.
Let’s not put too fine a point on it: the R documentation is (subtly) wrong [1]. This is easy to show: we just need to find a counter-example of the = operator ...
How do I contribute to other's code in GitHub? [closed]
...
Ideally you:
Fork the project
Make one or more well commented and clean commits to the repository. You can make a new branch here if you are modifying more than one part or feature.
Perform a pull request in github's web interface.
if it is a new Feature req...
Is it possible to modify variable in python that is in outer, but not global, scope?
...ave two python tips that are simple, but very helpful: yours is the second one :) Thanks @kindall!
– swdev
Sep 22 '14 at 23:35
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file_get_contents(“php://input”) or $HTTP_RAW_POST_DATA, which one is better to get the body of JSON
file_get_contents("php://input") or $HTTP_RAW_POST_DATA - which one is better to get the body of JSON request?
6 Answers...
Linux: compute a single hash for a given folder & contents?
...
One possible way would be:
sha1sum path/to/folder/* | sha1sum
If there is a whole directory tree, you're probably better off using find and xargs. One possible command would be
find path/to/folder -type f -print0 | sort -...