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Detect browser or tab closing
...Chrome, and Firefox) after basing off the approach by this answer.
First, start a countdown timer on the server in the beforeunload event handler in JS. The ajax calls need to be synchronous for IE and Edge to work properly. You also need to use return; to prevent the confirmation dialog from showi...
How to overlay one div over another div
...Position the .navi element to span all columns
*/
.navi {
grid-column-start: 1;
grid-column-end: span var(--columns);
grid-row-start: 1;
grid-row-end: 2;
/*
* Styling only, the below can be changed or removed
* depending on your use case
*/
background-color: #eaeae...
Why use deflate instead of gzip for text files served by Apache?
...y various web servers made the same mistake.
So, over the years browsers started implementing a fuzzy logic deflate implementation, they try for zlib header and adler checksum, if that fails they try for payload.
The result of having complex logic like that is that it is often broken. Verve Studi...
How to format a duration in java? (e.g format H:MM:SS)
...
@TimBüthe: No, I'd start using java.time in that case. (Although I can't immediately find an equivalent of PeriodFormatter...)
– Jon Skeet
Aug 4 '14 at 17:27
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How to load images dynamically (or lazily) when users scrolls them into view
...t is visible.
jQuery Sonar
Dave talks about Sonar in these slides. Sonar starts on slide 46, while the overall "load on demand" discussion starts on slide 33.
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How can I extract a predetermined range of lines from a text file on Unix?
...he data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want.
...
Breadth First Vs Depth First
...pth-first search algorithm acts as if it wants to get as far away
from the starting point as quickly as possible.
It generally uses a Stack to remember where it should go when it reaches a dead end.
Rules to follow: Push first vertex A on to the Stack
If possible, visit an adjacent unvisited verte...
What happens to a declared, uninitialized variable in C? Does it have a value?
...ardless of what standards say, in real life, each stack page actually does start off as zero, but when your program looks at any auto storage class values, it sees whatever was left behind by your own program when it last used those stack addresses. If you allocate a lot of auto arrays you will see ...
How does a hash table work?
...e library and a lot of work when you fill up the library.
Instead of just starting to fill up the library from one end to the other, you devise a clever little method. You take the title of the book, run it through a small computer program, which spits out a shelf number and a slot number on that s...
Can you explain the HttpURLConnection connection process?
...very simple timing code around the entire connection block, like so:
long start = System.currentTimeMillis();
log.info("Time so far = " + new Long(System.currentTimeMillis() - start) );
// run the above example code here
log.info("Total time to send/receive data = " + new Long(System.currentTimeMi...