Tutorial by Examples: at

Counting combinations of a specified length

Without replacement choose(length(LETTERS), 5) [1] 65780 With replacement length(letters)^5 [1] 11881376

R Language • Combinatorics

Setting behaviour of FloatingActionButton

You can set the behavior of the FAB in XML. For example: <android.support.design.widget.FloatingActionButton app:layout_behavior=".MyBehavior" /> Or you can set programmatically using: CoordinatorLayout.LayoutParams p = (CoordinatorLayout.LayoutParams) fab.getLayoutPara...

Android • FloatingActionButton

Concatenating strings

Using variables in a string You can concatenate strings using variables inside a double-quoted string. This does not work with properties. $string1 = "Power" $string2 = "Shell" "Greetings from $string1$string2" Using the + operator You can also join strings usin...

PowerShell • Strings

Importing and Authenticating

from py2neo import authenticate, Graph, Node, Relationship authenticate("localhost:7474", "neo4j", "<pass>") graph = Graph() You have to make sure your Neo4j Database exists at localhost:7474 with the appropriate credentials. the graph object is your interfa...

Python Language • Neo4j and Cypher using Py2Neo

Adding Relationships to Neo4j Graph

results = News.objects.todays_news() for r in results: article = graph.merge_one("NewsArticle", "news_id", r) if 'LOCATION' in results[r].keys(): for loc in results[r]['LOCATION']: loc = graph.merge_one("Location", "name", loc)...

Python Language • Neo4j and Cypher using Py2Neo

Query 2 : Get News Articles by Location on a particular date

def search_news_by_entity(location,timestamp): query = """ MATCH (n)-[]->(l) where l.name='%s' and n.timestamp='%s' RETURN n.news_id limit 10 """ query = query % (location,timestamp) news_ids = [] for res in graph.cypher.e...

Python Language • Neo4j and Cypher using Py2Neo

Installation or Setup

Detailed instructions on getting sorting set up or installed.

sorting • Getting started with sorting

Installation and Setup

Installation Installation of Log4j2 is as simple as putting log4j2 jar in application classpath. Though you might want to customize logs output through additional config file Configuration maven To add log4j to project in maven, add it's dependency: In pom.xml add following dependency: <dep...

log4j • Getting started with log4j

Installation

Castle Windsor is available via NuGet Use the "Manage NuGet Packages" and search for "castle windsor" To download for Visual Studio 2015 To download for previous versions Use Package Manager Console to execute: Install-Package Castle.Windsor Now you can us...

castle-windsor • Getting started with castle-windsor

Basic Invocation Example

import curses import traceback try: # -- Initialize -- stdscr = curses.initscr() # initialize curses screen curses.noecho() # turn off auto echoing of keypress on to screen curses.cbreak() # enter break mode where pressing Enter key ...

Python Language • Basic Curses with Python

Populate a select field depending on the value another.

This is an example to show how to change the allowed choices on a subCategory select field depending on the value of the category select field. To do that you have to make your subCategory choices dynamical for both client and server side. 1. Make the form dynamic on the client side for display / ...

symfony3 • Dynamic Forms

Create a Basic Post

$basic_post_args = array( 'post_title' => 'My Basic Post', 'post_content' => 'This is a basic content', 'post_status' => 'publish', 'post_author' => 1, 'post_category' => array(8, 59) ); wp_insert_post( $basic_post_args );

WordPress • Create a Post Programmatically

Create a Basic Page

$basic_page_args = array( 'post_title' => 'My Basic Page', 'post_content' => 'This is a basic content', 'post_type' => 'page', 'post_status' => 'publish', 'post_author' => 1 ); wp_insert_post( $basic_page_args );

WordPress • Create a Post Programmatically

Getting Bundle by Path

Locating a Cocoa bundle using its path To obtain the bundle at a specific path using Cocoa, call the bundleWithPath: class method of the NSBundle NSBundle *myBundle; // obtain a reference to a loadable bundle myBundle = [NSBundle bundleWithPath:@"/Library/MyBundle.bundle...

iOS • NSBundle

Docker stats all running containers

sudo docker stats $(sudo docker inspect -f "{{ .Name }}" $(sudo docker ps -q)) Shows live CPU usage of all running containers.

Docker • Docker stats all running containers

Iterating over nodes

The NodeIterator interface provides methods for iterating over nodes in a DOM tree. Given a document like this one: <html> <body> <section class="main"> <ul> <li>List Item</li> <li>List Item</li> <li>Li...

DOM • Traversal

Prototype Pattern (C++)

class IPrototype { public: virtual ~IPrototype() = default; auto Clone() const { return std::unique_ptr<IPrototype>{DoClone()}; } auto Create() const { return std::unique_ptr<IPrototype>{DoCreate()}; } private: virtual IPrototype* DoClone() const = 0; virt...

Design patterns • Prototype Pattern

Rationale

The correct invocation of helper modules and functions can be intimidating because these are generated dynamically (e.g., when creating a new project or adding a new resource) they are not documented explicitly (e.g., MyApp.ErrorHelpers.error_tag) the documentation does not cover all examples (...

phoenix-framework • Generate project documentation

Automatically reload vimrc upon save

To automatically reload vimrc upon save, add the following to your vimrc: if has('autocmd') " ignore this section if your vim does not support autocommands augroup reload_vimrc autocmd! autocmd! BufWritePost $MYVIMRC,$MYGVIMRC nested source % augroup END endif a...

vim • Tips and tricks to boost productivity

Create an empty dataset based on an existing dataset

Method 1: proc sql; create table foo like sashelp.class; quit; Method 2: proc sql; create table bar as select * from sashelp.class (obs=0); quit; Method 1 should be the preferred option

sas • Proc SQL