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what is the difference between a portlet and a servlet?
...lets are part of JSR-168 standard that regulates portal containers and components. This is different standard from standards for web containers (and servlets). Though there are definitely strong parallels between these two standards they differ in containers, APIs, life cycle, configuration, deploym...
Imitate Facebook hide/show expanding/contracting Navigation Bar
In the new iOS7 Facebook iPhone app, when the user scrolls up the navigationBar gradually hides itself to a point where it completely vanishes. Then when the user scrolls down the navigationBar gradually shows itself.
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WebKit issues with event.layerX and event.layerY
...r than to log a deprecation warning on an event (at least in my opinion). One mousemove handler and your console explodes. :)
Here's a recent jQuery ticket: http://bugs.jquery.com/ticket/10531
UPDATE: This is fixed now if you upgrade to jQuery 1.7.
Please note that if upgrading jQuery doesn't fi...
How to insert a text at the beginning of a file?
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If the file is only one line, you can use:
sed 's/^/insert this /' oldfile > newfile
If it's more than one line. one of:
sed '1s/^/insert this /' oldfile > newfile
sed '1,1s/^/insert this /' oldfile > newfile
I've included the lat...
Check if a string is html or not
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I'm honestly surprised I didn't get more downvotes for the snark.
– zzzzBov
Mar 17 '13 at 17:56
8
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Deciding between HttpClient and WebClient
...y in the form of message handlers for security, etc.
I know mine is only one opinion, but I would only recommend use of HttpClient for any future work. Perhaps there's some way to leverage some of the other pieces coming out of System.Net.Http without using that assembly directly, but I cannot ima...
PHP parse/syntax errors; and how to solve them
Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as:
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On select change, get data attribute value
... As of 2016 find() is much faster than children() even in cases like this one where we only have a tree depth of 2.
– Hafenkranich
Oct 15 '16 at 14:56
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Remove duplicate values from JS array [duplicate]
...item) ? false : (seen[item] = true);
});
}
This is how it's usually done. The idea is to place each element in a hashtable and then check for its presence instantly. This gives us linear time, but has at least two drawbacks:
since hash keys can only be strings or symbols in JavaScript, this ...
What are the First and Second Level caches in Hibernate?
Can anyone explain in simple words what First and Second Level caching in Hibernate are?
7 Answers
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