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Polymorphism: Why use “List list = new ArrayList” instead of “ArrayList list = new ArrayList”? [dupl
...e like this:
List list = new ArrayList();
the rest of your code only knows that data is of type List, which is preferable because it allows you to switch between different implementations of the List interface with ease.
For instance, say you were writing a fairly large 3rd party library, and ...
Why no generics in Go?
Disclaimer: I've only played with Go for one day now, so there's a good chance I've missed a lot.
6 Answers
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string to string array conversion in java
... i want an array where each character of the string will be now itself a string. like char 'n' will be now string "n" stored in an array
– riyana
Aug 5 '10 at 10:05
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C# HttpClient 4.5 multipart/form-data upload
Does anyone know how to use the HttpClient in .Net 4.5 with multipart/form-data upload?
10 Answers
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Nested or Inner Class in PHP
...(method_exists($this, $method)) {
/* The method exists so now we want to know if the
* caller is a child of our Package class. If not we throw an exception
* Note: This is a kind of a dirty way of finding out who's
* calling the me...
Performance surprise with “as” and nullable types
...a few machine code instructions. The cast is also easy, the JIT compiler knows the location of the value bits in the object and uses them directly. No copying or conversion occurs, all machine code is inline and takes but about a dozen instructions. This needed to be really efficient back in .NET...
Is it possible to hide extension resources in the Chrome web inspector network tab?
...e solution I was after (I'd have preferred a global setting), but there is now a way to filter out requests from extensions, as mentioned by a commenter on the issue I originally opened.
In the network tab filter box, enter the string -scheme:chrome-extension (as shown below):
This is case-sensi...
How to run functions in parallel?
... print(f'{seconds} has been processed')
secs_list = [2,4, 6, 8, 10, 12]
Now, if your operation is IO bound, then you can use the ThreadPoolExecutor as such:
with ThreadPoolExecutor() as executor:
results = executor.map(sleep_secs, secs_list)
Note how map is used here to map your function to ...
Ignoring an already checked-in directory's contents?
...n several projects. They are all in one directory without sub-directories. Now I just created a script to copy these assets over from another, structured directory, with several levels of sub-directories.
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Can I incorporate both SignalR and a RESTful API?
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@davids.s: I know, that I'm a little late, but thanks for the link. I've added an excerpt for further readers.
– Dennis
Aug 21 '15 at 7:18
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