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Can enums be subclassed to add new elements?
...have a base class called e.g. IntEnum, that looks like this: stackoverflow.com/questions/1681976/enum-with-int-value-in-java/…. Then all my enums could extend it...in this case just benefitting from inheritance and thus I wouldn't have to duplicate this "int-based enum" code frequently. I am new...
How do I install pip on macOS or OS X?
...):
easy_install has been deprecated. Please use get-pip.py instead:
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
Old answer:
easy_install pip
If you need admin privileges to run this, try:
sudo easy_install pip
...
How to automate createsuperuser on django?
... get_user_model(); User.objects.create_superuser('admin', 'admin@myproject.com', 'password')" | python manage.py shell
ORIGINAL ANSWER
Here there is a simple version of the script to create a superuser:
echo "from django.contrib.auth.models import User; User.objects.create_superuser('admin', 'ad...
In Java, what is the best way to determine the size of an object?
...
You can use the java.lang.instrument package
Compile and put this class in a JAR:
import java.lang.instrument.Instrumentation;
public class ObjectSizeFetcher {
private static Instrumentation instrumentation;
public static void premain(String args, Instrumenta...
Factory pattern in C#: How to ensure an object instance can only be created by a factory class?
...class BusinessObjectFactory
{
private Func<string, BusinessObject> _ctorCaller;
public BusinessObjectFactory (Func<string, BusinessObject> ctorCaller)
{
_ctorCaller = ctorCaller;
}
public BusinessObject CreateBusinessObject(string myProperty)
{
if (...)
return...
How do I test a private function or a class that has private methods, fields or inner classes?
...value;
This way your code remains type-safe and readable. No design compromises, no overexposing methods and fields for the sake of tests.
If you have somewhat of a legacy Java application, and you're not allowed to change the visibility of your methods, the best way to test private methods...
Default implementation for Object.GetHashCode()
...
That documentation quote must have come from a very early version. It is no longer written like this in current MSDN articles, probably because it is quite wrong.
– Hans Passant
Jul 21 '10 at 18:43
...
Uploading both data and files in one form using Ajax?
...pload data and files with one form using ajax.
PHP + HTML
<?php
print_r($_POST);
print_r($_FILES);
?>
<form id="data" method="post" enctype="multipart/form-data">
<input type="text" name="first" value="Bob" />
<input type="text" name="middle" value="James" />
...
How do I replace a git submodule with another repo?
...f <submodule>
Run git submodule sync
Run git submodule update
More complete info can be found elsewhere:
Changing remote repository for a git submodule
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...
Difference between Property and Field in C# 3.0+
... in several ways. For example:
class Person: IPerson
{
private string _name;
public string FirstName
{
get
{
return _name ?? string.Empty;
}
set
{
if (value == null)
throw new System.ArgumentNullException("v...