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Why must we define both == and != in C#?
...he C# compiler requires that whenever a custom type defines operator == , it must also define != (see here ).
13 Answer...
What's the purpose of using braces (i.e. {}) for a single-line if or loop?
... j++;
i++;
Oh no! Coming from Python, this looks ok, but in fact it isn't, as it's equivalent to:
int j = 0;
for (int i = 0 ; i < 100 ; ++i)
if (i % 2 == 0)
j++;
i++;
Of course, this is a silly mistake, but one that even an experienced programmer could make.
Another very...
When should I use Inline vs. External Javascript?
I would like to know when I should include external scripts or write them inline with the html code, in terms of performance and ease of maintenance.
...
Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
I have a requirements.txt file that I'm using with Travis-CI. It seems silly to duplicate the requirements in both requirements.txt and setup.py , so I was hoping to pass a file handle to the install_requires kwarg in setuptools.setup .
...
Fastest Way to Serve a File Using PHP
...ying to put together a function that receives a file path, identifies what it is, sets the appropriate headers, and serves it just like Apache would.
...
Google Maps Android API v2 - Interactive InfoWindow (like in original android google maps)
I am trying to a make custom InfoWindow after a click on a marker with the new Google Maps API v2. I want it to look like in the original maps application by Google. Like this:
...
Visual Studio 2010 isn't building before a run when there are code changes
I've been using using F5 (Start Debugging) for years to build the code (if its out of date), and then debug. This was working on VS 2010 also, however today it just start debugging without a build. Say I do a clean on the project, and then hit F5 instead of building it so it can run it throws an err...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
...le extensions).
Wikipedia entries for each of the formats will give you quite a bit of information:
JPEG (or JPG, for the file extension; Joint Photographic Experts Group)
PNG (Portable Network Graphics)
BMP (Bitmap)
GIF (Graphics Interchange Format)
TIFF (or TIF, for the file extension; Tagged I...
What is the best open-source java charting library? (other than jfreechart) [closed]
...nly successful opensource project in this area seems to be jfreechart, and it doesn't even have any documentation or examples available.
...
Reflecting parameter name: abuse of C# lambda expressions or syntax brilliance?
...blic static void Foo(Func<object, string> f)
{
Console.WriteLine(f.Method.GetParameters()[0].Name);
}
}
F#:
Class1.Foo(fun yadda -> "hello")
Result:
"arg" is printed (not "yadda").
As a result, library designers should either avoid these kinds of 'abuses', or else at ...