Tutorial by Examples: x

When mapping many-to-many relationships in JPA, configuration for the table used for the joining foreign-keys can be provided using the @JoinTable annotation: @Entity public class EntityA { @Id @Column(name="id") private long id; [...] @ManyToMany @JoinTable(name=...

Our UserProfile class Create a UserProfile model class with the relationship of OneToOne to the default User model: from django.db import models from django.contrib.auth.models import User from django.db.models.signals import post_save class UserProfile(models.Model): user = models.OneTo...

using System.Diagnostics.Contracts; public int DivideNumbers(int numerator, int denominator) { Contract.Requires<ArgumentOutOfRangeException>(denominator != 0); return numerator / denominator; }

Using Android Studio 2.2 and higher Native Development Kit (NDK) you can use to compile C and C++ code. You can use NDK by manually downloading NDK and build it or through CMake . Here I will give process flow for manually install NDK and an example code, Based on your System OS you can download ...

By default Sitecore adds all versions of the item to the sitecore_master_index. The drawback of that is that if users are using workflows and adding lots of versions all of them will be added to the search results in the content editor. Configuration: <event name="item:versionAdded" &...

By default, the full indexed document is returned as part of all searches. This is referred to as the source (_source field in the search hits). If we don’t want the entire source document returned, we have the ability to request only a few fields from within source to be returned, or we can set _so...

By default, a Docker container won't be able to run a GUI application. Before that, the X11 socket must be forwarded first to the container, so it can be used directly. The DISPLAY environment variable must be forwarded as well: docker run -v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY=unix$DISPLAY &...

<div> The time is now <%= DateTime.Now.ToString() %> </div>

Docs file (Input File) Mary had a little lamb its fleece was white as snow and everywhere that Mary went the lamb was sure to go. Hive Query CREATE TABLE FILES (line STRING); LOAD DATA INPATH 'docs' OVERWRITE INTO TABLE FILES; CREATE TABLE word_counts AS SELECT word, count(1) AS count F...

Amazon Linux is a RHEL variant, so the Red Hat instructions should work for the most part. There is, however, at least one discrepancy. There was an instance where the python27-devel package, as opposed to python-devel, was explicitly necessary. Here, we will install from source. sudo yum -y upd...

There are many fine ways to get this done, which others have already suggested. Following along the "get Excel data via SQL track", here are some pointers. Excel has the "Data Connection Wizard" which allows you to import or link from another data source or even within the very ...

Sometimes it is necessary to assert when an exception is thrown. Different unit testing frameworks have different conventions for asserting that an exception was thrown, (like NUnit's Assert.Throws method). This example does not use any framework specific methods, just built in exception handling. ...

AWK is string manipulation language, used largely in UNIX systems. The idea behind AWK was to create a versatile language to use when working on files, which wasn't too complex to understand. AWK has some other variants, but the main concept is the same, just with additional features. These other v...

To track so called "virtual pageviews", use the ga('send') method right after your asynchronous request: Syntax: ga('send', 'pageview', 'path to your virtual page'); Example (Simple Link): <a href="http://example.com/my.pdf" onClick="ga('send', 'pageview', '/virtu...

import tkinter as tk root = tk.Tk() rbvar = StringVar() rbvar.set(" ") rb1 = tk.Radiobutton(root, text="Option 1", variable=rbvar, value='a', indicatoron=0) rb1.pack() rb2 = tk.Radiobutton(root, text="Option 2", variable=rbvar, value='b', indicatoron=0) rb2...

<UserControl x:Class="Example.View" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"...

When you have entered something into IEx which expects a completion, such as a multiline string, IEx will change the prompt to indicate that it is waiting for you finish by changing the prompt to have an ellipsis (...) rather than iex. If you find that IEx is waiting for you to finish an expression...

<ul class="list-group"> <li class="list-group-item">Cras justo odio</li> <li class="list-group-item">Dapibus ac facilisis in</li> <li class="list-group-item">Morbi leo risus</li> <li class="list-gro...

<ul class="list-group"> <li class="list-group-item list-group-item-success">Dapibus ac facilisis in</li> <li class="list-group-item list-group-item-info">Cras sit amet nibh libero</li> <li class="list-group-item list-group-...

$title = sanitize_text_field( $_POST['title'] );