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What are the basic rules and idioms for operator overloading?
...::ios::failbit);
return is;
}
When implementing operator>>, manually setting the stream’s state is only necessary when the reading itself succeeded, but the result is not what would be expected.
Function call operator
The function call operator, used to create function objects, also k...
Algorithm to detect intersection of two rectangles?
... if you can find a line that separates the two objects. e.g. the objects / all points of an object are on different sides of the line.
The fun thing is, that it's sufficient to just check all edges of the two rectangles. If the rectangles don't overlap one of the edges will be the separating axis....
How do I convert a double into a string in C++?
...
The boost (tm) way:
std::string str = boost::lexical_cast<std::string>(dbl);
The Standard C++ way:
std::ostringstream strs;
strs << dbl;
std::string str = strs.str();
Note: Don't forget #include <sstream>
...
How can I merge properties of two JavaScript objects dynamically?
...Later properties overwrite earlier properties with the same name. */
const allRules = {...obj1, ...obj2, ...obj3};
Here is also the MDN documentation for this syntax. If you're using babel you'll need the babel-plugin-transform-object-rest-spread plugin for it to work.
ECMAScript 2015 (ES6) Stand...
When should I use uuid.uuid1() vs. uuid.uuid4() in python?
...d4() generates, as you said, a random UUID. The chance of a collision is really, really, really small. Small enough, that you shouldn't worry about it. The problem is, that a bad random-number generator makes it more likely to have collisions.
This excellent answer by Bob Aman sums it up nicely. (I...
How to detect if a variable is an array
...ng() (this is guaranteed to work by ECMA-262):
Object.prototype.toString.call(obj) === '[object Array]'
Both methods will only work for actual arrays and not array-like objects like the arguments object or node lists. As all array-like objects must have a numeric length property, I'd check for th...
Interop type cannot be embedded
...
.NET 4.0 allows primary interop assemblies (or rather, the bits of it that you need) to be embedded into your assembly so that you don't need to deploy them alongside your application.
For whatever reason, this assembly can't be embe...
Sending an Intent to browser to open specific URL [duplicate]
... this line in try/catch block to prevent app crash. This could happen if really no browser app installed on target device (yeah, shoot happens) also it could be that your app was forbidden to start a browser using restrict profiles.
– Stan
Jun 12 '15 at 18:10
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“Collection was mutated while being enumerated” on executeFetchRequest
...nator:[self.managedObjectContext persistentStoreCoordinator]];
...in the _importData method (just before to register the controller as observer for the notification) solves the problem.
Thanks for your help, Peter. And thanks to Fred McCann's for its valuable blog post !
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Is there a way to only install the mysql client (Linux)?
...ll the server component as it will try to install mariadb: mariadb.x86_64 : A community developed branch of MySQL
– berniey
May 18 '16 at 21:08
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