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Django ManyToMany filter()
...e underscore (__) syntax is used all over the place when working with querysets.
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Mongoose populate after save
... This worked for me although I had some problems when I tried to set the reference to null just before I saved. After the save, calling Book.populate incorrectly populated the field with the previous reference value and I can't work out why. The DB successfully contains the null.
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Passing multiple error classes to ruby's rescue clause in a DRY fashion
...ne statement. I made another exception class called FileLoadError and then set up the above three exceptions to inherit from it. I then rescued only FileLoadError.
Like this:
class FileLoadError < StandardError
end
class FileNamesMissingError < FileLoadError
end
class InputFileMissingError...
How to put an image in div with CSS?
...n image has been loaded, get width and height
dynamically create a div and set width, height and background
remove the original img
$(document).ready(function() {
var image = $("<img>");
var div = $("<div>")
image.load(function() {
div.css({
"width": this.wid...
C# - Multiple generic types in one list
...{
get { return Data; }
}
public TData Data { get; private set; }
}
You could derive a version targeting value types:
public interface IValueTypeMetadata : IMetadata
{
}
public interface IValueTypeMetadata<TData> : IMetadata<TData>, IValueTypeMetadata where TData : s...
How to make my layout able to scroll down?
...
If you even did not get scroll after doing what is written above .....
Set the android:layout_height="250dp"or you can say xdp where x can be any numerical value.
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Use the XmlInclude or SoapInclude attribute to specify types that are not known statically
...c object[] Items
{
get
{
return this.itemsField;
}
set
{
this.itemsField = value;
}
}
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Performance of static methods vs instance methods
...he register used for some reason) and hence there is no action required to set the this to what it needs to be set to. This applies to a certain extent to e.g. the first two parameters to the method being the first two parameters of a call it makes.
Since it'll be clear that this isn't null, this ma...
How to easily initialize a list of Tuples?
...ections used to be done.
public class Hold
{
public int Id { get; set; }
public string Name { get; set; }
}
//In some method or main console app:
var holds = new List<Hold> { new Hold { Id = 1, Name = "Me" }, new Hold { Id = 2, Name = "You" } };
var anonymousProjections = holds.S...
pandas read_csv and filter columns with usecols
... easier, but it's also massively slower. When you're working on large data-sets (I'm currently working with a single 13 GB CSV file myself), not having to wait hours for the file to load becomes much more important.
– Fake Name
Dec 18 '13 at 2:32
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