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How to kill a process running on particular port in Linux?
...TIME_WAIT state after the parent process is killed. The OS will then eventually completely close the port after about 60 seconds. It means that you can't reuse the port for at least 60 seconds (unless you give the reuse option to the socket).
– Mark Lakata
Sep ...
How to download a branch with git?
...set to track the remote branch.
Update: It's been 5 years since I originally posted this question. I've learned a lot and git has improved since then. My usual workflow is a little different now.
If I want to fetch the remote branches, I simply run:
git pull
This will fetch all of the remote ...
Count the number of occurrences of a string in a VARCHAR field?
...rough text that also has words with capitalized letters (like German where all nouns are written with capitalized letter). The REPLACE only replaces exact matches. To consider all words you need to change the replace above to: LENGTH( REPLACE ( LOWER(description), "value", "") ) and make sure that "...
Calculate date from week number
...ives me the 6th of Feb as the start date of the week. The other solutions all gave me the 13th of Feb, which is actually the start date of week #7.
– HaukurHaf
Feb 7 '12 at 9:25
1...
How do I modify the URL without reloading the page?
...
@CHiRiLo check out history.js which provides a fallback for browsers that don't support the HTML5 history API.
– David Murdoch
Sep 19 '12 at 22:21
25
...
Detecting an “invalid date” Date instance in JavaScript
...
Here's how I would do it:
if (Object.prototype.toString.call(d) === "[object Date]") {
// it is a date
if (isNaN(d.getTime())) { // d.valueOf() could also work
// date is not valid
} else {
// date is valid
}
} else {
// not a date
}
Update [2018-05-31]: If you...
How do I implement onchange of with jQuery?
...
Particularly, IE<9 does not support at all.
– dlo
Apr 4 '13 at 0:04
13
...
How to draw vertical lines on a given plot in matplotlib?
...
Calling axvline in a loop, as others have suggested, works, but can be inconvenient because
Each line is a separate plot object, which causes things to be very slow when you have many lines.
When you create the legend each li...
LINQ's Distinct() on a particular property
...m and pick a winner out of the group.
List<Person> distinctPeople = allPeople
.GroupBy(p => p.PersonId)
.Select(g => g.First())
.ToList();
If you want to define groups on multiple properties, here's how:
List<Person> distinctPeople = allPeople
.GroupBy(p => new {p.Pe...
How to check if IEnumerable is null or empty?
... love string.IsNullOrEmpty method. I'd love to have something that would allow the same functionality for IEnumerable. Is there such? Maybe some collection helper class? The reason I am asking is that in if statements the code looks cluttered if the patter is (mylist != null && mylist.A...