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Operator Overloading with C# Extension Methods
...attempting to use extension methods to add an operater overload to the C# StringBuilder class. Specifically, given StringBuilder sb , I'd like sb += "text" to become equivalent to sb.Append("text") .
...
What's the difference between interface and @interface in java?
...f this, you can declare an annotation type
@interface ClassPreamble {
String author();
String date();
int currentRevision() default 1;
String lastModified() default "N/A";
String lastModifiedBy() default "N/A";
// Note use of array
String[] reviewers();
}
which can then anno...
Why is using the JavaScript eval function a bad idea?
...ght be able to agree with you. Jeff pointed out the key: "eval of the same string multiple times can avoid parse overhead". As it is, you are just wrong; #3 holds true for many scenarios.
– Prestaul
Feb 13 '12 at 17:44
...
prevent property from being serialized in web API
...ialization:
public class Foo
{
public int Id { get; set; }
public string Name { get; set; }
[JsonIgnore]
public List<Something> Somethings { get; set; }
}
But, this way does not support XML format. So, in case your application has to support XML format more (or only support...
Traverse all the Nodes of a JSON Object Tree with JavaScript
...rse(value);
});
}
else {
// jsonObj is a number or string
}
}
This should be a good starting point. I highly recommend using modern javascript methods for such things, since they make writing such code much easier.
...
Symfony2 : How to get form validation errors after binding the request to the form
...s($child);
}
}
return $errors;
}
To get all errors as a string:
$string = var_export($this->getErrorMessages($form), true);
Symfony 2.5 / 3.0:
$string = (string) $form->getErrors(true, false);
Docs:
https://github.com/symfony/symfony/blob/master/UPGRADE-2.5.md#form
h...
Java Enum definition
...Name returns a Node so chaining won't work for the City:
class Node {
String name;
Node setName(String name) {
this.name = name;
return this;
}
}
class City extends Node {
int square;
City setSquare(int square) {
this.square = square;
return th...
How to convert Milliseconds to “X mins, x seconds” in Java?
...
Use the java.util.concurrent.TimeUnit class:
String.format("%d min, %d sec",
TimeUnit.MILLISECONDS.toMinutes(millis),
TimeUnit.MILLISECONDS.toSeconds(millis) -
TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))
);
Note: TimeUnit is part ...
Why do we have to specify FromBody and FromUri?
..., bool, double, and so forth), plus TimeSpan, DateTime, Guid, decimal, and string, plus any type with a type converter that can convert from a string.
For complex types, Web API tries to read the value from the message body, using a media-type formatter.
So, if you want to override the above defau...
Django using get_user_model vs settings.AUTH_USER_MODEL
... to spend additional time debugging.
settings.AUTH_USER_MODEL will pass a string as the foreign key model, and if the retrieval of the model class fails at the time this foreign key is imported, the retrieval will be delayed until all model classes are loaded into the cache.
...