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Easiest way to toggle 2 classes in jQuery
If I have class .A and class .B and want to switch in between on button click, what's a nice solution for that in jQuery? I still don't understand how toggleClass() works.
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How to work offline with TFS
Our TFS server has some temporary connectivity issues right now, and as such VS has gone unresponsive, leaving 50+ developers unable to work!
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Handling very large numbers in Python
I've been considering fast poker hand evaluation in Python. It occurred to me that one way to speed the process up would be to represent all the card faces and suits as prime numbers and multiply them together to represent the hands. To whit:
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What are queues in jQuery?
...d the jQuery.com document on queue() / dequeue() is too simple to understand. What exactly are queues in jQuery? How should I use them?
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How do I force Postgres to use a particular index?
...s a conscious decision made by the PostgreSQL team. A good overview of why and what you can do instead can be found here. The reasons are basically that it's a performance hack that tends to cause more problems later down the line as your data changes, whereas PostgreSQL's optimizer can re-evaluate ...
PHP DOMDocument loadHTML not encoding UTF-8 correctly
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Still in 2017 this answer is relevant and worked for me too. I had my database, multibyte, html meta tag and DOM encoding all set to utf8 and still had bad encoding on importing node from one DOC to another. php.net/manual/en/function.mb-convert-encoding.php was ...
Why can I add named properties to an array as if it were an object?
...you call a "bug" can as well be an awesome "feature". You can add a tittle and description to arrays without affecting their contents or length and without having to wrap them in objects with title, description and items properties. It all depends on how well you know the language and how you use it...
c# open file with default application and parameters
...t or Reader, you can't open the file in the specified page.
On the other hand, if you are Ok with specifying Acrobat or Reader, keep reading:
You can do it without telling the full Acrobat path, like this:
Process myProcess = new Process();
myProcess.StartInfo.FileName = "acroRd32.exe"; //n...
How do you query for “is not null” in Mongo?
...rue}});
This will return all documents with both a key called "IMAGE URL" and a non-null value.
db.mycollection.find({"IMAGE URL":{$ne:null}});
Also, according to the docs, $exists currently can't use an index, but $ne can.
Edit: Adding some examples due to interest in this answer
Given these inse...
Remove URL parameters without refreshing page
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TL;DR
1- To modify current URL and add / inject it (the new modified URL) as a new URL entry to history list, use pushState:
window.history.pushState({}, document.title, "/" + "my-new-url.html");
2- To replace current URL without adding it to history en...