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How can I listen for a click-and-hold in jQuery?
...tartTrigger(e) {
var $elem = $(this);
$elem.data('mouseheld_timeout', setTimeout(function() {
$elem.trigger('mouseheld');
}, e.data));
}
function stopTrigger() {
var $elem = $(this);
clearTimeout($elem.data('mouseheld_timeout'));
}
...
Creating a blocking Queue in .NET?
...ublic class BlockingQueue<T>
{
private readonly Subject<T> _queue;
private readonly IEnumerator<T> _enumerator;
private readonly object _sync = new object();
public BlockingQueue()
{
_queue = new Subject<T>();
_enumerator = _queue.GetEnume...
How to search a specific value in all tables (PostgreSQL)?
...
How about dumping the contents of the database, then using grep?
$ pg_dump --data-only --inserts -U postgres your-db-name > a.tmp
$ grep United a.tmp
INSERT INTO countries VALUES ('US', 'United States');
INSERT INTO countries VALUES ('GB', 'United Kingdom');
The same utility, pg_dump, can...
Tree data structure in C#
...eate a method with the signature of delegate ie for a tree of ints: void my_visitor_impl(int datum) - make it static if you need, instantiate a delgate: TreeVisitor<int> my_visitor = my_visitor_impl; and then invoke on the root node or NTree class if u make it static: NTree<int>.traverse...
How to run a python script from IDLE interactive shell?
...s.call(['python', 'helloworld.py']) # Just run the program
subprocess.check_output(['python', 'helloworld.py']) # Also gets you the stdout
With arguments:
subprocess.call(['python', 'helloworld.py', 'arg'])
Read the docs for details :-)
Tested with this basic helloworld.py:
import sys
if le...
Check if a Windows service exists and delete in PowerShell
...ee Remove-Service doc)
For example:
$service = Get-WmiObject -Class Win32_Service -Filter "Name='servicename'"
$service.delete()
Or with the sc.exe tool:
sc.exe delete ServiceName
Finally, if you do have access to PowerShell 6.0:
Remove-Service -Name ServiceName
...
Javascript how to split newline
...t(`Current method: ${example.replace(/\r/g, "").split("\n")}`);
output("________");
});
function output(txt) {
console.log(txt.replace(/\n/g, "\\n").replace(/\r/g, "\\r"));
}
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Javascript - Open a given URL in a new tab by clicking a button
...
In javascript you can do:
window.open(url, "_blank");
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How can I check if a Perl array contains a particular value?
...
Simply turn the array into a hash:
my %params = map { $_ => 1 } @badparams;
if(exists($params{$someparam})) { ... }
You can also add more (unique) params to the list:
$params{$newparam} = 1;
And later get a list of (unique) params back:
@badparams = keys %params;
...
Why shouldn't I use “Hungarian Notation”?
...moot.
– Plumenator
Mar 10 '12 at 10:06
It's just a trick to help productivity. Just like IDE autocomplete. There is no...