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Is an empty href valid?
... of the existing answers references the relevant specifications.
An empty string can’t be a URI. However, the href attribute doesn’t only take URIs as value, but also URI references. An empty string may be a URI reference.
HTML 4.01
HTML 4.01 uses RFC 2396, where it says in section 4.2. Same-...
How do you find the current user in a Windows environment?
...
The extra information with all the environment variables makes this a wonderful extended answer.
– bballdave025
May 21 at 19:32
...
Why does the indexing start with zero in 'C'?
...s the operand of the sizeof operator, or the unary & operator, or is a string literal used to initialize an array, an expression that has type "array of type" is converted to an expression with type "pointer to type" that points to the initial element of the array object and is not an lvalue. If...
Ways to implement data versioning in MongoDB
...Mongoid has built in simple versioning
http://mongoid.org/en/mongoid/docs/extras.html#versioning
mongoid-history is a Ruby plugin that provides a significantly more complicated solution with auditing, undo and redo
https://github.com/aq1018/mongoid-history
...
proper way to sudo over ssh
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@nomen your solution is also valid, but requires extra steps. If I have a lot of devices without a passwordless sudo user, I can create an automation script using this solution. Sometimes you work on a system you don't own and you don't want or can't make changes, sometimes...
Calculating arithmetic mean (one type of average) in Python
...tinuous integration systems like Travis CI, installing numpy takes several extra minutes. If quick and light build is valuable to you, and you need only the mean, consider.
– Akseli Palén
Mar 7 '16 at 11:36
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Composer killed while updating
...
DigitalOcean fix that does not require extra memory - activating swap, here is an example for 1gb:
in terminal run below
/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
sudo /sbin/swapon /var/swap.1
The above solution will work un...
How to render a DateTime in a specific format in ASP.NET MVC 3?
...ender it in a specific format - for example in the format which ToLongDateString() returns?
15 Answers
...
Load view from an external xib file in storyboard
...want to reference:
public protocol NibLoadable {
static var nibName: String { get }
}
public extension NibLoadable where Self: UIView {
public static var nibName: String {
return String(describing: Self.self) // defaults to the name of the class implementing this protocol.
}
...
How to scale a UIImageView proportionally?
...ound on the Apple Dev forums.
In a project-wide .h -
@interface UIImage (Extras)
- (UIImage *)imageByScalingProportionallyToSize:(CGSize)targetSize;
@end;
Implementation:
@implementation UIImage (Extras)
- (UIImage *)imageByScalingProportionallyToSize:(CGSize)targetSize {
UIImage *sourceI...