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What does “program to interfaces, not implementations” mean?
...ng sort as long as the interface does not change.
Libraries like the Java API and the .NET Framework make heavy use of interfaces because millions of programmers use the objects provided. The creators of these libraries have to be very careful that they do not change the interface to the classes in...
Finding current executable's path without /proc/self/exe
...ry by Gregory Pakosz implements this for a variety of platforms, using the APIs mentioned in mark4o's post. This is most interesting if you "just" need a solution that works for a portable project and are not interested in the peculiarities of the various platforms.
At the time of writing, supported...
When should I use RequestFactory vs GWT-RPC?
...proach, your service implementations would tend to be more general-purpose APIs that are not tightly coupled to one specific application. Your service definitions would likely directly access databases through JDBC or Hibernate or even files in the server's file system. For many applications, this v...
How to handle both a single item and an array for the same property using JSON.net
...m having some trouble with the inconsistent treatment of categories in the API.
7 Answers
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How to change the background color of the options menu?
...olor/overflow_background</item>
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</style>
Tested from API 4.2 to 5.0.
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Spring @Transactional - isolation, propagation
...Default is REQUIRED. (docs.spring.io/spring-framework/docs/current/javadoc-api/org/…)
– ihebiheb
Dec 31 '17 at 13:18
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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
...lasses in argument types and return types optional in imported Objective-C APIs. Before you use an Objective-C object, you should check to ensure that it is not missing.
In some cases, you might be absolutely certain that an Objective-C method or property never returns a nil object reference. T...
MPICH vs OpenMPI
... support many of the same networks. However, libfabric is a multi-faceted API, so not every network may be supported the same in both (e.g. MPICH has an OFI-based IBM Blue Gene/Q implementation, but I'm not aware of equivalent support in Open-MPI). However, the OFI-based implementations of both MP...
Running Bash commands in Python
... It is basically equivalent to subprocess.run(...).returncode
High-level API vs subprocess.Popen()
The refactored and extended subprocess.run() is more logical and more versatile than the older legacy functions it replaces. It returns a CompletedProcess object which has various methods which all...
Why is exception handling bad?
...ol, if possible.
There are pages of notes on the benefits of exceptions (API consistency, choice of location of error handling code, improved robustness, etc.) There's a section on performance that includes several patterns (Tester-Doer, Try-Parse).
Exceptions and exception handling are not bad. ...