The export tool exports a set of files from HDFS back to an RDBMS. The target table must already exist in the database. The input files are read and parsed into a set of records according to the user-specified delimiters.
Example :
sqoop export \
--connect="jdbc:<databaseconnector>&quo...
First, ensure you have installed mongodb and express via npm. Then, in a file conventionally titled db.js, use the following code:
var MongoClient = require('mongodb').MongoClient
var state = {
db: null,
}
exports.connect = function(url, done) {
if (state.db) return done()
M...
In this iText 5 example, we'll create a text field and we'll add it to a PDF:
public void manipulatePdf(String src, String dest) throws DocumentException, IOException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
T...
In this iText 7 example, we'll create a text field and we'll add it to a PDF:
public void manipulatePdf(String src, String dest) throws IOException {
PdfReader reader = new PdfReader(src);
PdfDocument pdf = new PdfDocument(reader, new PdfWriter(dest));
PdfAcroForm form = PdfAcroFor...
In this iText 5 example, we'll change the properties and the value of a text field:
public void manipulatePdf(String src, String dest) throws DocumentException, IOException {
PdfReader reader = new PdfReader(src);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
...
In this iText 7 example, we'll change the properties and the value of a text field:
public void manipulatePdf(String src, String dest) throws IOException {
PdfReader reader = new PdfReader(src);
PdfDocument pdf = new PdfDocument(reader, new PdfWriter(dest));
PdfAcroForm form = PdfA...
Instead of running intensive tasks into JavaFX Thread that should be done into a Service.So what basically is a Service?
A Service is a class which is creating a new Thread every time you are starting it and is passing a Task to it to do some work.The Service can return or not a value.
Below is ...
You shouldn't throw raw values as exceptions, instead use one of the standard exception classes or make your own.
Having your own exception class inherited from std::exception is a good way to go about it. Here's a custom exception class which directly inherits from std::exception:
#include <ex...
You should have a plain CMake project myproject, and we are going to make an Eclipse workspace outside of it:
myproject/
.git/
CMakeLists.txt
src/
main.cpp
workspace/
myproject/
Release/
Debug/
Qt (optional)
Get latest Eclipse ...
A very handy way to subset Time Series is to use partial string indexing. It permits to select range of dates with a clear syntax.
Getting Data
We are using the dataset in the Creating Time Series example
Displaying head and tail to see the boundaries
se.head(2).append(se.tail(2))
# 2016-09-2...
When you need to find the bounding rectangle of a quadratic bezier curve you can use the following performant method.
// This method was discovered by Blindman67 and solves by first normalising the control point thereby reducing the algorithm complexity
// x1,y1, x2,y2, x3,y3 Start, Control, and ...
We will present some examples to show how to apply happens-before reasoning to check that writes are visible to subsequent reads.
Single-threaded code
As you would expect, writes are always visible to subsequent reads in a single-threaded program.
public class SingleThreadExample {
public in...
If you have an elixir file; a script or a module and want to load it into the current IEx session, you can use the c/1 method:
iex(1)> c "lib/utils.ex"
iex(2)> Utils.some_method
This will compile and load the module in IEx, and you'll be able to call all of it's public methods.
...
Package Control - Download/Install this plugin to install and manage all your other plugins in sublime.
Git - Keeps track of your git versioning system. Also enables you to execute some git commands from ST itself.
GitGutter - With GitGutter, you can see which lines have been added, deleted or m...
OS: Mac OS X 10.11 (Should work on Windows / Linux since we are using Vagrant)
Vagrant 1.8.4 Installed
Directory Structure on Host OS (Mac OS):
/path/to/project
/provision
/packages
Note: If you use different vesions, be sure to update
Variables at top of provision.sh script b...
This Example assumes you setup as explained in Example: Setting Up Environment for aurelia-cli Explained of this document.
Creating a new project
In main host os, open terminal (Mac OS in my case)
$cd /path/to/project/vagrant
$vagrant up (Launches VM GUI)
Log into VM via UI
U...
Environment
This Example assumes you setup as explained in Example: Setting Up Environment for Aurelia-cli Explained of this document.
Summary of setup:
On Mac OS X with Vagrant 1.8.4
$cd /path/to/project/vagrant
$vagrant up
Log into VM via UI as User:vagrant / PW:vagrant
$cd /home/vagrant/...
Func<int, int> add1 = i => i + 1;
Func<int, int, int> add = (i, j) => i + j;
// Behaviourally equivalent to:
int Add1(int i)
{
return i + 1;
}
int Add(int i, int j)
{
return i + j;
}
...
Console.WriteLine(add1(42)); //43
Console.WriteLine(Add1(42));...
