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Advantage of creating a generic repository vs. specific repository for each object?
...f.
A pattern I often use is to have specific repository interfaces, but a base class for the implementations. For example, using LINQ to SQL, you could do:
public abstract class Repository<TEntity>
{
private DataContext _dataContext;
protected Repository(DataContext dataContext)
...
How does Spring autowire by name when more than one matching bean is found?
...
You can use the @Qualifier annotation
From here
Fine-tuning annotation-based autowiring with qualifiers
Since autowiring by type may lead to multiple candidates, it is often necessary to have more control over the selection process. One way to accomplish this is with Spring's @Qualifier annotat...
How to manage REST API versioning with spring?
... the current request.
Implement a VersionRangeRequestMappingHandlerMapping based on the annotation and request condition (as described in the post How to implement @RequestMapping custom properties
).
Configure spring to evaluate your VersionRangeRequestMappingHandlerMapping before using the default...
Qt events and signal/slots
... virtual function in a Qt class, which you're expected to reimplement in a base class of yours if you want to handle the event. It's related to the Template Method pattern.
Note how I used the word "handle". Indeed, here's a basic difference between the intent of signals and events:
You "handle" ...
When is the thread pool used?
...s use of native C++ and libuv is likely to use the thread pool (think: database access)
libuv has a default thread pool size of 4, and uses a queue to manage access to the thread pool - the upshot is that if you have 5 long-running DB queries all going at the same time, one of them (and any other as...
How to convert numbers between hexadecimal and decimal
... @ColeJohnson int.Parse doesn't have an option for you to specify the base as an int, just as one of a few valid NumberStyles. For base 16, either is just fine, but as a general solution, it's good to know how both work.
– Tim S.
Oct 21 '13 at 20:44
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I can't install python-ldap
...
The python-ldap is based on OpenLDAP, so you need to have the development files (headers) in order to compile the Python module. If you're on Ubuntu, the package is called libldap2-dev.
Debian/Ubuntu:
sudo apt-get install libsasl2-dev python-...
How to replace all occurrences of a string?
...al standard method on the String built-in prototype.
Regular Expression Based Implementation
String.prototype.replaceAll = function(search, replacement) {
var target = this;
return target.replace(new RegExp(search, 'g'), replacement);
};
Split and Join (Functional) Implementation
Stri...
Interface defining a constructor signature?
... I would chip in here - specifically to show how you could use an abstract base class in tandem with your existing Interface and maybe cut down on the amount of refactoring needed in the future for similar situations. This concept has already been hinted at in some of the comments but I thought it ...
Git Cherry-pick vs Merge Workflow
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Both rebase (and cherry-pick) and merge have their advantages and disadvantages. I argue for merge here, but it's worth understanding both. (Look here for an alternate, well-argued answer enumerating cases where rebase is preferre...