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If string is empty then return some default value
..., even if the string is not empty.
For example
@user.address.or User.make_a_long_and_painful_SQL_query_here
would make extra work even if address is not empty. Maybe you could update that a bit (sorry about confusing one-liner, trying to keep it short):
class String
def or what = ""
self....
Nodejs send file in response
...tp.createServer(function(request, response) {
var filePath = path.join(__dirname, 'myfile.mp3');
var stat = fileSystem.statSync(filePath);
response.writeHead(200, {
'Content-Type': 'audio/mpeg',
'Content-Length': stat.size
});
var readStream = fileSystem.createR...
Is it possible in SASS to inherit from a class in another file?
...s Default buttons
In your styles.scss file you would have to first import _bootstrap.scss:
@import "_bootstrap.scss";
Then below the import:
button { @extend .btn; }
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improve this answe...
What is “rvalue reference for *this”?
.... Take the following code as a further example:
struct test2{
std::unique_ptr<int[]> heavy_resource;
test2()
: heavy_resource(new int[500]) {}
operator std::unique_ptr<int[]>() const&{
// lvalue object, deep copy
std::unique_ptr<int[]> p(new int[500]);
f...
How can I select rows with most recent timestamp for each key value?
...aster than other answers, at least in my case.
– rain_
Sep 6 '17 at 7:51
@rain_ It really depends on the use case. The...
TypeScript function overloading
... are named apart and called by compiled TypeScript (e.g. createFeatureLayer_1 and createFeatureLayer_2) and createFeatureLayer could then determine which one to call based upon the contents of arguments for interoperation with vanilla JavaScript.
– Thomas S. Trias
...
Dependent DLL is not getting copied to the build output folder in Visual Studio
...
{
private static void Dummy()
{
Action<Type> noop = _ => {};
var dummy = typeof(AbcDll.AnyClass);
noop(dummy);
}
}
This infomation actually costed me hours to figure out, so I thought I share it.
...
Why should I declare a virtual destructor for an abstract class in C++?
...structor when deleting a pointer to a base class.
– j_random_hacker
Feb 10 '09 at 10:10
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...
AngularJS - convert dates in controller
... function(input)
{
if(input == null){ return ""; }
var _date = $filter('date')(new Date(input), 'dd/MM/yyyy');
return _date.toUpperCase();
};
});
view
<span>{{ d.time | date }}</span>
or in controller
var filterdatetime = $filter('date')( yourdate );...
FFmpeg on Android
...e generated in step 1, just add a line similar to this to Android.mk: LOCAL_STATIC_LIBRARIES := libavcodec libavformat libavutil libc libz
Use the ffmpeg-wrapping dynamic library from your java sources. There's enough documentation on JNI out there, you should be fine.
Regarding using ffmpeg for p...