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Is there a REAL performance difference between INT and VARCHAR primary keys?
Is there a measurable performance difference between using INT vs. VARCHAR as a primary key in MySQL? I'd like to use VARCHAR as the primary key for reference lists (think US States, Country Codes) and a coworker won't budge on the INT AUTO_INCREMENT as a primary key for all tables.
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What is difference between functional and imperative programming languages?
Most of the mainstream languages, including object-oriented programming (OOP) languages such as C#, Visual Basic, C++, and Java were designed to primarily support imperative (procedural) programming, whereas Haskell/gofer like languages are purely functional. Can anybody elaborate on what is the dif...
How do I convert CamelCase into human-readable names in Java?
I'd like to write a method that converts CamelCase into a human-readable name.
12 Answers
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Insert line after first match using sed
For some reason I can't seem to find a straightforward answer to this and I'm on a bit of a time crunch at the moment. How would I go about inserting a choice line of text after the first line matching a specific string using the sed command. I have ...
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What is the difference between loose coupling and tight coupling in the object oriented paradigm?
Can any one describe the exact difference between loose coupling and tight coupling in Object oriented paradigm?
16 Answers...
What is a Python egg?
I'm new to Python and am just trying to understand how its packages work. Presumably "eggs" are some sort of packaging mechanism, but what would be a quick overview of what role they play and may be some information on why they're useful and how to create them?
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Combined area of overlapping circles
I recently came across a problem where I had four circles (midpoints and radius) and had to calculate the area of the union of these circles.
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Implements vs extends: When to use? What's the difference?
Please explain in an easy to understand language or a link to some article.
18 Answers
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Why do we use arrays instead of other data structures?
As I was programming, I haven't seen an instance where an array is better for storing information than another form thereof. I had indeed figured the added "features" in programming languages had improved upon this and by that replaced them. I see now that they aren't replaced but rather given new ...
The difference between sys.stdout.write and print?
Are there situations in which sys.stdout.write() is preferable to print ?
15 Answers
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