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Is a GUID unique 100% of the time?
...tal
number of unique keys (2128 or
3.4×1038) is so large that the probability of the same number being
generated twice is very small. For
example, consider the observable
universe, which contains about 5×1022
stars; every star could then have
6.8×1015 universally unique GUIDs.
From Wikipedia.
T...
How to get a list of installed Jenkins plugins with name and version pair
...the information using the Jenkins Script Console which is accessible by visiting http://<jenkins-url>/script. (Given that you are logged in and have the required permissions).
Enter the following Groovy script to iterate over the installed plugins and print out the relevant information:
Je...
Link to reload current page
Is it possible to have a normal link pointing to the current location?
21 Answers
21
...
How to create a custom exception type in Java? [duplicate]
I would like to create a custom exception in Java, how do I do it?
9 Answers
9
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How do I make a redirect in PHP?
Is it possible to redirect a user to a different page through the use of PHP?
30 Answers
...
How to Set a Custom Font in the ActionBar Title?
How (if possible) could I set a custom font in a ActionBar title text(only - not the tab text) with a font in my assets folder? I don't want to use the android:logo option.
...
When to use Task.Delay, when to use Thread.Sleep?
...o block the current thread.
Use Task.Delay when you want a logical delay without blocking the current thread.
Efficiency should not be a paramount concern with these methods. Their primary real-world use is as retry timers for I/O operations, which are on the order of seconds rather than milliseco...
make div's height expand with its content
...ion still gets a fair amount of traffic, so I wanted to update the answer with a modern alternative using a new layout mode in CSS3 called Flexible boxes or Flexbox:
body {
margin: 0;
}
.flex-container {
display: flex;
flex-direction: column;
min-height: 100vh;
}
header {
...
Are C# events synchronous?
...o the event.
I too was curious about the internal mechanism of event and its related operations. So I wrote a simple program and used ildasm to poke around its implementation.
The short answer is
there's no asynchronous operation involved in subscribing or invoking the events.
event is impleme...
Extract hostname name from string
...oot domain (i.e. www.食狮.公司.cn, b.c.kobe.jp, etc.). Read more about it here.
Try:
npm install --save psl
Then with my "extractHostname" implementation run:
let psl = require('psl');
let url = 'http://www.youtube.com/watch?v=ClkQA2Lb_iE';
psl.get(extractHostname(url)); // returns youtube....