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What is the colon operator in Ruby?
...what exactly does the : do? I read somewhere about how it's similar to a string, but somehow a symbol.
9 Answers
...
What is the difference between up-casting and down-casting with respect to class variable
...og.
Police Dog - Police Dog extends Pet Dog.
public class Dog{
public String getType () {
System.out.println("NormalDog");
return "NormalDog";
}
}
/**
* Pet Dog has an extra method dogName()
*/
public class PetDog extends Dog{
public String getType () {
System.ou...
How to format a Java string with leading zero?
Here is the String, for example:
21 Answers
21
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How to concatenate strings in django templates?
I want to concatenate a string in a Django template tag, like:
12 Answers
12
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PadLeft function in T-SQL
...
STR() only works on numbers (or numbers in string fields). This code breaks if you are using it on a varchar field that you assume to have a number but one of the records has bad (non-numeric) data. The RIGHT() function won't break in this case.
–...
Allow user to select camera or gallery for image
...+ File.separator + "MyDir" + File.separator);
root.mkdirs();
final String fname = Utils.getUniqueImageFilename();
final File sdImageMainDirectory = new File(root, fname);
outputFileUri = Uri.fromFile(sdImageMainDirectory);
// Camera.
final List<Intent> cameraIntents = ...
Make a link use POST instead of GET
... tab to the url of the href
As the method is POST, we should have no query string in the URL of the target page we load
That page should receive the data in parameters (names and value) by POST
I am using jquery here, but this could be done with native apis (harder and longer of course).
<html...
HTML-encoding lost when attribute read from input field
...ferenced here: Fastest method to replace all instances of a character in a string)
Some performance results here:
http://jsperf.com/htmlencoderegex/25
It gives identical result string to the builtin replace chains above. I'd be very happy if someone could explain why it's faster!?
Update 2015-03-0...
Pass a data.frame column name to a function
...
Is there any way to pass the column name not as a string?
– kmm
Apr 14 '10 at 23:13
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What is ViewModel in MVC?
...c class Employee : IEntity
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public DateTime DateCreated { get; set; }
}
View models differ from domain models in that view models only contain the data (represented by pro...