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C++11 rvalues and move semantics confusion (return statement)
... This is pretty huge for returning expensive objects like containers & strings by value efficiently from methods.
Now where things get interesting with rvalue references, is that you can also use them as arguments to normal functions. This allows you to write containers that have overloads for...
Should I put the Google Analytics JS in the or at the end of ?
... near the top of the tag and before any other script or CSS tags, and the string 'UA-XXXXX-Y' should be replaced with the property ID (also called the "tracking ID") of the Google Analytics property you wish to track.
<!-- Google Analytics -->
<script>
(function(i,s,o,g,r,a,m){i[...
Why are trailing commas allowed in a list?
...but forgot to add a comma on the previous line
]
and triggering implicit string literal concatenation, producing s = ['manny', 'mo', 'jackroger'] instead of the intended result.
share
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improve th...
Using union and order by clause in mysql
...organize.
But this way has the advantage of being fast, not introducing extra variables, and making it easy to separate out each query including the sort. The ability to add a limit is simply an extra bonus.
And of course feel free to turn the union all into a union and add a sort for the whole...
How to serialize SqlAlchemy result to JSON?
...(db.Integer, primary_key=True, auto_increment=True)
email = db.Column(db.String(200), unique=True)
@app.route('/users/')
def users():
users = User.query.all()
return jsonify(users)
if __name__ == "__main__":
users = User(email="user1@gmail.com"), User(email="user2@gmail.com")
db.crea...
How to dynamically create a class?
... // NOTE: assuming your list contains Field objects with fields FieldName(string) and FieldType(Type)
foreach (var field in yourListOfFields)
CreateProperty(tb, field.FieldName, field.FieldType);
Type objectType = tb.CreateType();
return objectTy...
How does push notification technology work on Android?
...hone, used by all apps: installing a new app that uses GCM doesn't add any extra load.
The first step in GCM is that a third-party server (such as an email server) sends a request to Google's GCM server. This server then sends the message to your device, through that open connection. The Android sy...
Automatically deleting related rows in Laravel (Eloquent ORM)
...record in the DB, but will not run your delete method, so if you are doing extra work on delete (for example - delete files), it will not run
– amosmos
Dec 22 '15 at 13:57
10
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How to skip over an element in .map()?
...d should be skipped. I often come across arrays I want to map 98% of (eg: String.split() leaving a single, empty string at the end, which I don't care about). Thanks for your answer :)
– Alex McMillan
Oct 28 '15 at 2:54
...
How can I play sound in Java?
...y works with .wav format.
public static synchronized void playSound(final String url) {
new Thread(new Runnable() {
// The wrapper thread is unnecessary, unless it blocks on the
// Clip finishing; see comments.
public void run() {
try {
Clip clip = AudioSystem.getClip();
...