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How does the Amazon Recommendation feature work?
...ile of you
Demographic information (your shipping address, etc.) - they know what is popular in your general area for your kids, yourself, your spouse, etc.
user segmentation = did you buy 3 books in separate months for a toddler? likely have a kid or more.. etc.
Direct marketing click throug...
clear javascript console in Google Chrome
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Update: As of November 6, 2012, console.clear() is now available in Chrome Canary.
If you type clear() into the console it clears it.
I don't think there is a way to programmatically do it, as it could be misused. (console is cleared by some web page, end user can't acce...
How can I change an element's class with JavaScript?
... Wow, three years and 183 upvotes and nobody spotted that until now. Thanks jinglesthula, I've corrected the regex so it wont incorrectly remove parts of class names. // I guess this is a good example of why a Framework (like jQuery) is worth using - bugs like this are caught and fixed so...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...on is [A] rather than [+A]).
Note that there is another type of variance known as contravariance. This is very important as it explains why covariance can cause some issues. Contravariance is literally the opposite of covariance: parameters vary upward with subtyping. It is a lot less common par...
How can I convert an Integer to localized month name in Java?
...here is an easier way to make a monthed calendar though, I do this in code now and I'm not so sure.
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
public String formatMonth(int month, Locale locale) {
DateFormat f...
Group vs role (Any real difference?)
... between group and role? I've been trying to figure this out for some time now and the more information I read, the more I get the sense that this is brought up just to confuse people and there is no real difference. Both can do the other's job. I've always used a group to manage users and their acc...
Is it possible to implement dynamic getters/setters in JavaScript?
... how to create getters and setters for properties whose names one already knows, by doing something like this:
4 Answers
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How to find if directory exists in Python
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@CamilStaps This question was viewed 354000 times (by now). Answers here are not only for OP, they are for anyone who could come here for whatever reason. aganders3's answer is pertinent even if it does not directly resolve OP's problem.
– Gabriel
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Read/write to Windows registry using Java
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I know this question is old, but it is the first search result on google to "java read/write to registry". Recently I found this amazing piece of code which:
Can read/write to ANY part of the registry.
DOES NOT USE JNI.
DOES...
How to use shared memory with Linux in C
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Haha I know what you mean, but it's actually because we're not used to reading manpages. When I learned to read them and got used to them, they became even more useful than lousy tutorials with particular demonstrations. I remember I...