Hadoop Distributed File System (HDFS) is a Java-based file system that provides scalable and reliable data storage that is designed to span large clusters of commodity servers. HDFS, MapReduce, and YARN form the core of Apache™ Hadoop®.
HDFS is designed to be highly fault-tolerant, which is achieve...
So you want to deploy your app to multiple sites? and your project has too many dependencies to install them one-by-one? Npm has a solution just issue the following command:
npm init
In the project's root folder then follow the instructions on screen (type in the desired value then press enter) ...
To detect the endian of the device
var isLittleEndian = true;
(()=>{
var buf = new ArrayBuffer(4);
var buf8 = new Uint8ClampedArray(buf);
var data = new Uint32Array(buf);
data[0] = 0x0F000000;
if(buf8[0] === 0x0f){
isLittleEndian = false;
}
})();
Lit...
C++11 introduces what are known as scoped enums. These are enumerations whose members must be qualified with enumname::membername. Scoped enums are declared using the enum class syntax. For example, to store the colors in a rainbow:
enum class rainbow {
RED,
ORANGE,
YELLOW,
GREE...
Create your RecyclerView in your layout xml file:
<android.support.v7.widget.RecyclerView
android:id="@+id/recycleView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
Create your Model...
Some LINQ methods return a query object. This object does not hold the results of the query; instead, it has all the information needed to generate those results:
var list = new List<int>() {1, 2, 3, 4, 5};
var query = list.Select(x => {
Console.Write($"{x} ");
return ...
Modify your Gemfile to include the Devise gem:
gem 'devise'
Then update your gems with:
$ bundle install
Run the installers in your project:
$ rails generate devise:install
Then create your Devise model (e.g. User) with:
$ rails generate devise User
you'll need to set up the default ...
This is a copy of the advanced function snippet from the Powershell ISE. Basically this is a template for many of the things you can use with advanced functions in Powershell. Key points to note:
get-help integration - the beginning of the function contains a comment block that is set up to be ...
There are times when an include file has to generate different output from the preprocessor depending on whether the compiler is a C compiler or a C++ compiler due to language differences.
For example a function or other external is defined in a C source file but is used in a C++ source file. Since...
The most common mode of using TensorFlow involves first building a dataflow graph of TensorFlow operators (like tf.constant() and tf.matmul(), then running steps by calling the tf.Session.run() method in a loop (e.g. a training loop).
A common source of memory leaks is where the training loop conta...
package com.example.my.package;
The package declaration should not be line wrapped, regardless of whether it exceeds the recommended maximum length of a line.
One variable per declaration (and at most one declaration per line)
Square brackets of arrays should be at the type (String[] args) and not on the variable (String args[]).
Declare a local variable right before it is first used, and initialize it as close to the declaration as possible.
return flag ? "yes" : "no";
String cmp = (flag1 != flag2) ? "not equal" : "equal";
// Don't do this
return (flag ? "yes" : "no");
Redundant grouping parentheses (i.e. parentheses that does not affect evaluation) may be used if t...
An XML document can contain a DTD. DTD stands for Document Type Declaration. A DTD begins with <!DOCTYPE root-element-name > where doc-element-name must match the name of the so-called document element (the one element at the top-level).
<?xml version="1.0"?>
<!DOCTYPE doc...
