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Most efficient way to store thousand telephone numbers
...ers" for the data structure: the first is a constant for the first five digits (17 bits); so from here on, each phone number has only the remaining five digits left. We view these remaining five digits as 17-bit binary integers and store k of those bits using one method and 17 - k = m with a differe...
How do I calculate square root in Python?
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So you're computing x(1/2) in the first instance, x(0) in the second.
So it's not wrong, it's the right answer to a different question.
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Java8 Lambdas vs Anonymous classes
Since Java8 has been recently released and its brand new lambda expressions looks to be really cool, I was wondering if this means the demise of the Anonymous classes that we were so used to.
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Differences between cookies and sessions?
...t JSP & Servlets . I have some knowledge of HttpSession - I have used it in some of my sample projects.
9 Answers
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JavaScript Nested function
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Functions are another type of variable in JavaScript (with some nuances of course). Creating a function within another function changes the scope of the function in the same way it would change the scope of a variable. This is especially important for use with closures to reduce ...
Non-CRUD operations in a RESTful service
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Think about purchase as a business entity or a resource in RESTful dictionary. That being said, making a purchase is actually creating a new resource. So:
POST /api/purchase
will place a new order. The details (user, car, etc.) should be referenced by id (or U...
What is the maven-shade-plugin used for, and why would you want to relocate Java packages?
... a Maven n00b) so I tried to understand the reason for using this and what it does.
4 Answers
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How to execute Python scripts in Windows?
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When you execute a script without typing "python" in front, you need to know two things about how Windows invokes the program. First is to find out what kind of file Windows thinks it is:
C:\>assoc .py
.py=Python.File
Next, you need to...
Get cursor position (in characters) within a text Input field
How can I get the caret position from within an input field?
9 Answers
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Open file dialog box in JavaScript
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Here is a nice one
Fine Uploader demo
It is an <input type='file' /> control itself. But a div is placed over that and css styles are applied to get that feel. Opacity of the file control is set to 0 so that it appears that the dialog window is opened when ...