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for each loop in Objective-C for accessing NSMutable dictionary
...
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 ...
Best way to check if object exists in Entity Framework?
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Here's an example of how to use it:
if (context.MyEntity.Any(o => o.Id == idToMatch))
{
// Match!
}
And in vb.net
If context.MyEntity.Any(function(o) o.Id = idToMatch) Then
' Match!
End If
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How to replace a hash key with another key
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deep_transform_keys can be used for it :) apidock.com/rails/v4.2.1/Hash/deep_transform_keys
– gayavat
Nov 30 '15 at 6:28
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CSS two divs next to each other
...out 200px; and the left <div> must fill up the rest of the screen width? How can I do this?
13 Answers
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