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How does python numpy.where() work?

I am playing with numpy and digging through documentation and I have come across some magic. Namely I am talking about numpy.where() : ...
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How to directly initialize a HashMap (in a literal way)?

Is there some way of initializing a Java HashMap like this?: 14 Answers 14 ...
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When and how should I use a ThreadLocal variable?

When should I use a ThreadLocal variable? 25 Answers 25 ...
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Is it worth hashing passwords on the client side

When I want to put a login system in place, I always compare the MD5 of the given password with its value in the users table on the server side. ...
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How to Truncate a string in PHP to the word closest to a certain number of characters?

I have a code snippet written in PHP that pulls a block of text from a database and sends it out to a widget on a webpage. The original block of text can be a lengthy article or a short sentence or two; but for this widget I can't display more than, say, 200 characters. I could use substr() to cho...
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sql primary key and index

Say I have an ID row (int) in a database set as the primary key. If I query off the ID often do I also need to index it? Or does it being a primary key mean it's already indexed? ...
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Do spurious wakeups in Java actually happen?

Seeing various locking related question and (almost) always finding the 'loop because of spurious wakeups' terms 1 I wonder, has anyone experienced such kind of a wakeup (assuming a decent hardware/software environment for example)? ...
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Sorted collection in Java

I'm a beginner in Java. Please suggest which collection(s) can/should be used for maintaining a sorted list in Java. I have tried Map and Set , but they weren't what I was looking for. ...
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Create a table without a header in Markdown

Is it possible to create a table without a header in Markdown? 11 Answers 11 ...
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Why does Decimal.Divide(int, int) work, but not (int / int)?

How come dividing two 32 bit int numbers as ( int / int ) returns to me 0 , but if I use Decimal.Divide() I get the correct answer? I'm by no means a c# guy. ...