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Inheriting constructors
...explicit A(int x) {}
};
class B: public A
{
using A::A;
};
This is all or nothing - you cannot inherit only some constructors, if you write this, you inherit all of them. To inherit only selected ones you need to write the individual constructors manually and call the base constructor as nee...
How do you check whether a number is divisible by another number (Python)?
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answered May 26 '15 at 15:32
Pankaj PrakashPankaj Prakash
1,5961717 silver badges2424 bronze badges
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Nullable type as a generic parameter possible?
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Change the return type to Nullable<T>, and call the method with the non nullable parameter
static void Main(string[] args)
{
int? i = GetValueOrNull<int>(null, string.Empty);
}
public static Nullable<T> GetValueOrNull<T>(DbDataRecord reader, str...
When and why to 'return false' in JavaScript?
...s, such as onsubmit, returning false is a way to tell the event to not actually fire. So, say, in the onsubmit case, this would mean that the form is not submitted.
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performSelector may cause a leak because its selector is unknown
...for the C function pointer for the method corresponding to the controller. All NSObjects respond to methodForSelector:, but you can also use class_getMethodImplementation in the Objective-C runtime (useful if you only have a protocol reference, like id<SomeProto>). These function pointers are ...
How do I configure different environments in Angular.js?
...strict";
angular.module("config", []).constant("ENV", "development");
Finally, I declare the dependency on whatever modules need it:
// the 'config' dependency is generated via grunt
var app = angular.module('myApp', [ 'config' ]);
Now my constants can be dependency injected where needed. E.g.,...
Is there a function to deselect all text using JavaScript?
Is there a function in javascript to just deselect all selected text? I figure it's got to be a simple global function like document.body.deselectAll(); or something.
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Split a collection into `n` parts with LINQ?
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Doing all those modulus operations can get a bit expensive on long lists.
– Jonathan Allen
Mar 17 '09 at 18:11
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How do you get the list of targets in a makefile?
...ed rake a bit (a Ruby make program), and it has an option to get a list of all the available targets, eg
20 Answers
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Finding differences between elements of a list
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Actually simply list(map(operator.sub, t[1:], t[:-1])) will do.
– blhsing
Aug 6 '18 at 15:24
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