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Difference between Big-O and Little-O Notation
What is the difference between Big-O notation O(n) and Little-O notation o(n) ?
4 Answers
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Is 'switch' faster than 'if'?
Is a switch statement actually faster than an if statement?
12 Answers
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Why is require_once so bad to use?
...ce but if you're still getting redefine errors, you could something like this:
if (!defined('MyIncludeName')) {
require('MyIncludeName');
define('MyIncludeName', 1);
}
I'll personally stick with the *_once statements but on silly million-pass benchmark, you can see a difference between t...
Which timestamp type should I choose in a PostgreSQL database?
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First off, PostgreSQL’s time handling and arithmetic is fantastic and Option 3 is fine in the general case. It is, however, an incomplete view of time and timezones and can be supplemented:
Store the name of a user’s time zone as a user preference (e.g. America/Los_Angeles,...
Abusing the algebra of algebraic data types - why does this work?
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Disclaimer: A lot of this doesn't really work quite right when you account for ⊥, so I'm going to blatantly disregard that for the sake of simplicity.
A few initial points:
Note that "union" is probably not the best term...
Why does typeof NaN return 'number'?
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It means Not a Number. It is not a peculiarity of javascript but common computer science principle.
From http://en.wikipedia.org/wiki/NaN:
There are three kinds of operation
which return NaN:
Operations with a NaN as at least one operand
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Is it possible to “decompile” a Windows .exe? Or at least view the Assembly?
... debugger you can step through the program assembly interactively.
With a disassembler, you can view the program assembly in more detail.
With a decompiler, you can turn a program back into partial source code, assuming you know what it was written in (which you can find out with free tools such as ...
A type for Date only in C# - why is there no Date type?
...t we have the need for representing a date without a time. I know of the existence of the DateTime, however, it incorporates a time of day as well. I want to make explicit that certain variables and method-arguments are date-based . Hence I can't use the DateTime.Date property
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What are the key differences between Scala and Groovy? [closed]
...roperate with Java. Other than that, they're extremely different.
Groovy is a "dynamic" language in not only the sense that it is dynamically typed but that it supports dynamic meta-programming.
Scala is a "static" language in that it is statically typed and has virtually no dynamic meta-programm...
What is the best way to implement constants in Java? [closed]
I've seen examples like this:
28 Answers
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