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Right HTTP status code to wrong input
...efined by the response Content-Type.
In my case, I would like to PUT a string, that must be unique, to a database via an API. Before adding it to the database, I am checking that it is not already in the database.
If it is, I will return "Error: The string is already in the database", 409.
I b...
How to format numbers by prepending 0 to single-digit numbers?
... myNumber - dec;
var formattedNumber = ("0" + myNumber).slice(-2) + dec.toString().substr(1);
console.log(formattedNumber);
Lastly, if you're having to deal with the possibility of negative numbers, it's best to store the sign, apply the formatting to the absolute value of the number, and r...
Hashing a dictionary?
...)))
This is much less computationally intensive than generating the JSON string or representation of the dictionary.
UPDATE: Please see the comments below, why this approach might not produce a stable result.
share
...
Convert Enumeration to a Set/List
...m) method.
public class EnumerationToList {
public static void main(String[] args) {
Vector<String> vt = new Vector<String>();
vt.add("java");
vt.add("php");
vt.add("array");
vt.add("string");
vt.add("c");
Enumeration<Str...
Adding IN clause List to a JPA Query
...not an array) of objects. The objects must match the type of the field. .toString() is no substitute for class String
– dube
Mar 21 '14 at 10:47
2
...
Inner class within Interface
... EDITOR("editor"),
VANILLA("regular user");
private String description;
private Role(String description) {
this.description = description;
}
public String getDescription() {
return description;
}
}
public Strin...
Comparing date part only without comparing time in JavaScript
...me zone to Pacific Time (US). In the same browser console type date2.toDateString() and you'll get back Mon Sep 19 2011 rather than Tuesday the 20th!
– Adam
Aug 13 '15 at 21:47
10
...
How to update only one field using Entity Framework?
... DbContext (introduced in EF 4.1):
public void ChangePassword(int userId, string password)
{
var user = new User() { Id = userId, Password = password };
using (var db = new MyEfContextName())
{
db.Users.Attach(user);
db.Entry(user).Property(x => x.Password).IsModified = true;
d...
How to set a Fragment tag by code?
I haven't found something like setTag(String tagName) method in the Fragment class. The only way to set a Fragment tag that I have found is by doing a FragmentTransaction and passing a tag name as parameter.
...
INotifyPropertyChanged vs. DependencyProperty in ViewModel
...erties and cringe at the thought of INotifyPropertyChanged. Apart from the string property names and possible memory leaks due to event subscription, INotifyPropertyChanged is a much more explicit mechanism.
Dependency properties imply "when this, do that" using easily-understood static metadata. I...