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“Single-page” JS websites and SEO
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While #2 might be "easier" for you as a developer, it only provides search engine crawling. And yes, if Google finds out your serving different content, you might be penalized (I'm not an expert on that, but I have heard of it happening).
Both SEO and accessibility (not just for disable...
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.
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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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for each loop in Objective-C for accessing NSMutable dictionary
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for (NSString* key in xyz) {
id value = xyz[key];
// do stuff
}
This works for every class that conforms to the NSFastEnumeration protocol (available on 10.5+ and iOS), though NSDictionary is one of the few collections which lets you enumerate keys...
Canvas width and height in HTML5
Is it possible to fix the width and height of an HTML5 canvas element?
4 Answers
4
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Is it possible to use argsort in descending order?
Consider the following code:
9 Answers
9
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Why would an Enum implement an Interface?
...ple here is wrong, since Enum already implements that. You can't even override it.
A better example is having an interface that defines, let's say, a data type. You can have an enum to implement the simple types, and have normal classes to implement complicated types:
interface DataType {
// met...
Rails 3 migrations: Adding reference column?
...gration AddUserRefToProducts user:references
like you can see on rails guides
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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));
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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 ...