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When to use wrapper class and primitive type
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Others have mentioned that certain constructs such as Collections require objects and that objects have more overhead than their primitive counterparts (memory & boxing).
Another consideration is:
It can be handy to initialize Objects to null or send ...
Is it possible to make the -init method private in Objective-C?
I need to hide (make private) the -init method of my class in Objective-C.
9 Answers
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Entity framework code-first null foreign key
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You must make your foreign key nullable:
public class User
{
public int Id { get; set; }
public int? CountryId { get; set; }
public virtual Country Country { get; set; }
}
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im...
Understanding :source option of has_one/has_many through of Rails
Please help me in understanding the :source option of has_one/has_many :through association. The Rails API explanation makes very little sense to me.
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SQL update query using joins
I have to update a field with a value which is returned by a join of 3 tables.
11 Answers
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Difference between .tagName and .nodeName
... any of the various node types, you can use the nodeName property.
When using nodeName against an element node, you'll get its tag name, so either could really be used, though you'll get better consistency between browsers when using nodeName.
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JQuery Event for user pressing enter in a textbox?
Is there any event in Jquery that's triggered only if the user hits the enter button in a textbox? Or any plugin that can be added to include this? If not, how would I write a quick plugin that would do this?
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Android-java- How to sort a list of objects by a certain value within the object
Im trying to sort through an arraylist of objects by a particular value within the object. What would be the best approach to do such a thing. Should I use Collections.sort() with some kind of comparator?
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Remove the bottom divider of an android ListView
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This seems to no longer work starting with 4.4.2. I can run literally the same app across my many test devices (ranging from 2.3.7 all the way up until 4.4.2) and KitKat is the only one where this seems to have no effect... Any ideas? I'm not adding a footer ...
How can I rotate an HTML 90 degrees?
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You need CSS to achieve this, e.g.:
#container_2 {
-webkit-transform: rotate(90deg);
-moz-transform: rotate(90deg);
-o-transform: rotate(90deg);
-ms-transform: rotate(90deg);
transform: rotate(90deg);
}
Demo:
#container_2 {
width: 100px...