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How do I find Waldo with Mathematica?
...need to be played around with before you can get a positive. To see what I mean, try your packaged function as is on "http://www.findwaldo.com/fankit/graphics/IntlManOfLiterature/Scenes/AtTheBeach.jpg" It's harder with this one.
– abcd
Dec 12 '11 at 19:57
...
WHERE vs HAVING
...level aliases in GROUP BY, ORDER BY and HAVING.
And are there any downsides instead of doing "WHERE 1" (writing the whole definition instead of a column name)
If your calculated expression does not contain any aggregates, putting it into the WHERE clause will most probably be more efficient.
...
How do I use the conditional operator (? :) in Ruby?
...some extra junk after it), but they are not required in the last case as said issue does not arise.
You can use the "long-if" form for readability on multiple lines:
question = if question.size > 20 then
question.slice(0, 20) + "..."
else
question
end
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The Concept of 'Hold space' and 'Pattern space' in sed
...ommands here: 1!G, h and $p. 1!G has an address, 1 (first line), but the ! means that the command will be executed everywhere but on the first line. $p on the other hand will only be executed on the last line. So what happens is this:
first line is read and inserted automatically into the pattern ...
What is the difference between include and require in Ruby?
... file but can be anywhere, like in class or even a method definition. This means you can do mixin in C++ by writting some methods in a file and include it in the code of a class, exactly has you would do in ruby. So they are not that far, even though it's indeed not a common practice in C's.
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How to navigate through a vector using iterators? (C++)
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Vector's iterators are random access iterators which means they look and feel like plain pointers.
You can access the nth element by adding n to the iterator returned from the container's begin() method, or you can use operator [].
std::vector<int> vec(10);
std::vector<...
How does “this” keyword work within a function?
...richard: Except in strict mode, and this has nothing to do with scope. You mean the global object.
– T.J. Crowder
Jul 18 '16 at 13:45
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Is it possible to deserialize XML into List?
...c List<User> Items {get;set;}
}
public class User
{
[XmlElement("id")]
public Int32 Id { get; set; }
[XmlElement("name")]
public String Name { get; set; }
}
static class Program
{
static void Main()
{
XmlSerializer ser= new XmlSerializer(typeof(UserList));
...
The tilde operator in Python
...sentation of the integer are reversed (as in b <- b XOR 1 for each individual bit), and the result interpreted again as a twos-complement integer. So for integers, ~x is equivalent to (-x) - 1.
The reified form of the ~ operator is provided as operator.invert. To support this operator in your ...