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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
If I have a table
15 Answers
15
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Is it possible to read from a InputStream with a timeout?
Specifically, the problem is to write a method like this:
8 Answers
8
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Equivalent of jQuery .hide() to set visibility: hidden
... return (visibility == 'visible') ? 'hidden' : 'visible';
});
};
If you want to overload the original jQuery toggle(), which I don't recommend...
!(function($) {
var toggle = $.fn.toggle;
$.fn.toggle = function() {
var args = $.makeArray(arguments),
lastArg = a...
How big can a MySQL database get before performance starts to degrade
... against the slaves and the write queries run against the master. However if you are not ready for this yet, you can always tweak your indexes for the queries you are running to speed up the response times. Also there is a lot of tweaking you can do to the network stack and kernel in Linux that wi...
How do you allow spaces to be entered using scanf?
...ection, unless you know for certain that the input will always be of a specific format (and perhaps not even then).
Remember than scanf stands for "scan formatted" and there's precious little less formatted than user-entered data. It's ideal if you have total control of the input data format but ge...
socket.io rooms or namespacing?
... to / joined a nsp / room, i.e. it's not just client-side filtering
The differences:
namespaces are connected to by the client using io.connect(urlAndNsp) (the client will be added to that namespace only if it already exists on the server)
rooms can be joined only on the server side (although cr...
Internet Explorer's CSS rules limits
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just for clarification: would the following line count as one "selector", or two? div.oneclass, div.anotherstyle {color: green};
– anthony
Nov 5 '13 at 15:44
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How to use LINQ to select object with minimum or maximum property value
... do you do the superfluous check curMin == null? curMin could only be null if you were using Aggregate() with a seed that is null.
– Good Night Nerd Pride
May 18 '16 at 13:01
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What is the difference between HTTP status code 200 (cache) vs status code 304?
...e other hand, are the response of the server after the browser has checked if a file was modified since the last version it had cached (the answer being "no").
For most optimal web performance, you're best off setting a far-future Expires: or Cache-Control: max-age header for all assets, and then w...
Which concurrent Queue implementation should I use in Java?
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Basically the difference between them are performance characteristics and blocking behavior.
Taking the easiest first, ArrayBlockingQueue is a queue of a fixed size. So if you set the size at 10, and attempt to insert an 11th element, the ...