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The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
... was written 11 years ago, but now there are far better options to do this more cleanly in a single line, both using only Java built-in classes or using a utility library. See other answers below.
Since strings are immutable, you may want to use the StringBuilder class if you're going to alter th...
Xml configuration versus Annotation based configuration [closed]
...ing to persisted in one way, then inlined meta-data (i.e. annotations) are more compact and readable.
If, however, your object model was reused in different applications in such a way that each application wanted to persist the model in different ways, then externalising the meta-data (i.e. XML des...
How to “properly” create a custom object in JavaScript?
...otype's this.x and this.y. If the constructor function were doing anything more complicated, it would fall flat on its face.
So what we need to do is find a way to create a prototype object which contains the methods and other members we want at a class level, without calling the base class's const...
What's the point of NSAssert, actually?
...obust enough to carry on in an expected manner after their occurrence. The more practical approach is to crash the app and fix the bug found from the crash report and release a new version. Having said that, it is important to make sure that there is no data loss in any such situation. This has to b...
Enum type constraints in C# [duplicate]
... this work rather than one of the hundreds of other features that are much more frequently requested, or have more compelling and farther-reaching usage cases. (If we're going to muck with this code, I'd personally prioritize delegate constraints way, way above enum constraints.)
...
How do I redirect in expressjs while passing some context?
...assedVariable = req.query.valid;
// Do something with variable
});
For more dynamic way you can use the url core module to generate the query string for you:
const url = require('url');
app.get('/category', function(req, res) {
res.redirect(url.format({
pathname:"/",
query...
How can I know if a branch has been already merged into master?
...
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In C#, What is a monad?
...t a; b is basically again a computation that can be combined together with more stuff.
This is a simple monad, it is a way of combing small computations to bigger ones. The ; says "do the thing on the left, then do the thing on the right".
Another thing that can be seen as a monad in object oriente...
What are the primary differences between TDD and BDD? [closed]
...
I understand BDD to be more about specification than testing. It is linked to Domain Driven Design (don't you love these *DD acronyms?).
It is linked with a certain way to write user stories, including high-level tests. An example by Tom ten Thij...
Clear a terminal screen for real
...;c which is the VT100 escape code for resetting the terminal. Here is some more information on terminal escape codes.
Edit
Here are a few other ways of doing it...
printf "\ec" #\e is ESC in bash
echo -en "\ec" #thanks @Jonathon Reinhart.
# -e Enable interpretation of of backslash escapes
# -n...