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How many database indexes is too many?
...nds on the operations that occur on the table.
If there's lots of SELECTs and very few changes, index all you like.... these will (potentially) speed the SELECT statements up.
If the table is heavily hit by UPDATEs, INSERTs + DELETEs ... these will be very slow with lots of indexes since they all ...
How to calculate moving average without keeping the count and data-total?
...d a way to calculate a moving cumulative average without storing the count and total data that is received so far.
8 Answer...
Intelli J IDEA takes forever to update indices
... to update indices for a project? I just installed Intelli J on my machine and imported a rather large Maven project (13k+ files).
...
Smallest data URI image possible for a transparent image
...a transparent 1x1 image with a background image, to be able to use sprites and still provide alternative text for some icons.
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Build a simple HTTP server in C [closed]
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Or use inetd and skip the networking part.
– jrockway
Dec 30 '09 at 7:21
22
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How to initialize a struct in accordance with C programming language standards
I want to initialize a struct element, split in declaration and initialization. This is what I have:
15 Answers
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What does the unary plus operator do?
... plus operator do? There are several definitions that I have found ( here and here ) but I still have no idea what it would be used for. It seems like it doesn't do anything but there has be a reason for it, right?
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What is the use of making constructor private in a class?
... answered Jan 14 '10 at 6:33
nandananda
23.5k1212 gold badges6565 silver badges8989 bronze badges
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How to loop through a plain JavaScript object with the objects as members?
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Under ECMAScript 5, you can combine Object.keys() and Array.prototype.forEach():
var obj = {
first: "John",
last: "Doe"
};
//
// Visit non-inherited enumerable keys
//
Object.keys(obj).forEach(function(key) {
console.log(key, obj[key]);
});
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How to use Sublime over SSH
...trying to use Sublime Text 2 as an editor when I SSH in to my work server, and I'm stumped. I found this http://urbangiraffe.com/2011/08/13/remote-editing-with-sublime-text-2/ (among many other posts) that looks like it might help, but I don't follow it exactly, particularly with what values I sh...