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Proper way to use **kwargs in Python
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pylint flags it as bad form to use kwargs in __init__(). Can someone explain why this is a lint-worthy transgression?
– hughdbrown
Nov 16 '09 at 5:16
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Why does C++ require a user-provided default constructor to default-construct a const object?
...9), the default constructor for T is called (and the initialization is ill-formed if T has no accessible default constructor);
It simply talks about default constructor of T, whether its user-defined or compiler-generated is irrelevant.
If you're clear up to this, then understand what the spec ne...
Validate uniqueness of multiple columns
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What's an appropriate HTTP status code to return by a REST API service for a validation failure?
...I is supposed to have an ISO-8601 date and you find that it's in the wrong format or refers to February 31st, then you would return an HTTP 400. Ditto if you expect well-formed XML in an entity body and it fails to parse.
(1/2016): Over the last five years WebDAV's more specific HTTP 422 (Unproces...
How to change the playing speed of videos in HTML5?
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How to detect if app is being built for device or simulator in Swift
...n avoids warning produced by @WZW's answer.
import Foundation
struct Platform {
static var isSimulator: Bool {
return TARGET_OS_SIMULATOR != 0
}
}
Example usage:
if Platform.isSimulator {
print("Running on Simulator")
}
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DateTime.Now vs. DateTime.UtcNow
...l web audience, and because I'd prefer not to nag every user to fill out a form indicating what timezone they live in.
We also display relative times (2 hours ago, 1 day ago, etc) until the post ages enough that the time is "the same" no matter where on Earth you live.
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The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
... x[[i]]
x[[i, j]]
x$a
x$"a"
For vectors and matrices the [[ forms are rarely used, although they have some slight semantic differences from the [ form (e.g. it drops any names or dimnames attribute, and that partial matching is used for character indices). When indexing multi-dimensio...
How can I divide two integers to get a double?
...e following would work too:
double num3 = (double)num1/num2;
For more information see:
Dot Net Perls
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Anatomy of a “Memory Leak”
...bjects without removing them. An event handler attached to an object is a form of reference to that object, so will prevent collection even after all other references have gone. Always remember to detach event handlers (using the -= syntax in C#).
Does the leak go away when the process exits, and...