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How random is JavaScript's Math.random?

For 6 years I've had a random number generator page on my website. For a long time, it was the first or second result on Google for "random number generator" and has been used to decide dozens, if not hundreds of contests and drawings on discussion forums and blogs (I know because I see the referr...
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Declaring variables inside or outside of a loop

...that str absolutely ought to be declared within the while loop. No ifs, no ands, no buts. The only case where this rule might be violated is if for some reason it is of vital importance that every clock cycle must be squeezed out of the code, in which case you might want to consider instantiating s...
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Python multiprocessing PicklingError: Can't pickle

I am sorry that I can't reproduce the error with a simpler example, and my code is too complicated to post. If I run the program in IPython shell instead of the regular Python, things work out well. ...
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How does a Java HashMap handle different objects with the same hash code?

As per my understanding I think: 14 Answers 14 ...
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Difference between a User and a Login in SQL Server

...ly don't mess with. One of them that has me confused is the area of Logins and Users. Seems like it should be a pretty simple topic... ...
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Difference between >>> and >>

What is the difference between >>> and >> operators in Java? 7 Answers ...
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MySQL 'create schema' and 'create database' - Is there any difference

Taking a peak into the information_schema database and peaking at the metadata for one of my pet projects, I'm having a hard time understanding what (if any) differences there are between the create schema command and the create database command for MySQL. ...
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How to lock compiled Java classes to prevent decompilation?

... also scramble your code flow in a way that makes it really hard to follow and works as an excellent code optimizer... Also many of the obfuscators are also able to scramble your string constants and remove unused code. Another possible solution (not necessarily excluding the obfuscation) is to us...
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Database Design for Revisions?

...tribute. This just causes problems down the line, requires surrogate keys and all sorts of other problems. Design 2 does have problems with schema changes. If you change the Employees table you have to change the EmployeeHistories table and all the related sprocs that go with it. Potentially doub...
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What does the git index contain EXACTLY?

What does the Git index exactly contain, and what command can I use to view the content of the index? 5 Answers ...