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Sending a JSON to server and retrieving a JSON in return, without JQuery
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Sending and receiving data in JSON format using POST method
// Sending and receiving data in JSON format using POST method
//
var xhr = new XMLHttpRequest();
var url = "url";
xhr.open("POST", url, true);
xhr.setRequestHeader("Content-Type", "application/json");
xhr.onreadystat...
Time complexity of Sieve of Eratosthenes algorithm
...-bound is n(1/2 + 1/3 + 1/5 + 1/7 + …), that is sum of reciprocals of primes up to n, which is O(n log log n). (See here or here.)
The "find the next prime number" bit is only O(n) overall, amortized — you will move ahead to find the next number only n times in total, not per step. So this whol...
How do I get the opposite (negation) of a Boolean in Python?
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How to remove a field from params[:something]
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Rails 4/5 - edited answer
(see comments)
Since this question was written newer versions of Rails have added the extract! and except eg:
new_params = params.except[the one I wish to remove]
This is a safer way to 'grab' all the params you need into a copy ...
Bootstrap: Open Another Modal in Modal
...o have them ordered in your Html markup from lowest to highest.
$(document).on('hidden.bs.modal', function (event) {
if ($('.modal:visible').length) {
$('body').addClass('modal-open');
}
});
UPDATE: When you have stacked modals, all the backdrops appear below the lowermost mo...
How to get default gateway in Mac OSX
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You can try with:
route -n get default
It is not the same as GNU/Linux's route -n (or even ip route show) but is useful for checking the default route information.
Also, you can check the route that packages will take to a particular host. E.g.
route -n get www.yahoo.com
The out...
Pass parameter to controller from @Html.ActionLink MVC 4
... // linkText
"BlogReplyCommentAdd", // actionName
"Blog", // routeValues
new { // htmlAttributes
b...
How To: Best way to draw table in console app (C#)
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You could do something like the following:
static int tableWidth = 73;
static void Main(string[] args)
{
Console.Clear();
PrintLine();
PrintRow("Column 1", "Column 2", "Column 3", "Column 4");
PrintLine();
PrintRow("",...
Java packages com and org
What are the meaning of the packages org and com in Java?
4 Answers
4
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How to Create Deterministic Guids
... in the file changes, the guid value for the attribute should remain the same.
5 Answers
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