Tutorial by Examples: in

Setting up an HTTPS server

Once you have node.js installed on your system, just follow the procedure below to get a basic web server running with support for both HTTP and HTTPS! Step 1 : Build a Certificate Authority create the folder where you want to store your key & certificate : mkdir conf go to tha...

Node.js • Securing Node.js applications

Edit row details using sub-element

This example uses a separate element to edit bound data to the row-detail template. Working jsBin <!DOCTYPE html> <html> <head> <base href="https://polygit.org/polymer+:master/iron-data-table+Saulis+:master/components/"> <link rel="import&q...

polymer • iron-data-table

Accessing query results

Once you have a query, you can do more with it than just iterating the results in a for loop. Setup: from datetime import date class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) name = Column(Text, nullable=False) birthday = Column(Date) # ...

sqlalchemy • The ORM

Reading commands from a script file

Octave commands can be saved in a file and evaluated by loading the file using source. For instance, let hello.m be the text file containing two lines (the first line is a comment) # my first Octave program disp('Hello, World!') If you type source hello.m at an Octave command prompt you will g...

octave • Getting started with octave

Alternative async tracking snippet

While the JavaScript tracking snippet described above ensures the script will be loaded and executed asynchronously on all browsers, it has the disadvantage of not allowing modern browsers to preload the script. The alternative async tracking snippet below adds support for preloading, which will pr...

google-analytics • Getting started with google-analytics

Using Plugins

Plugins are scripts that enhance the functionality of analytics.js to aid in measuring user interaction. Plugins are typically specific to a set of features that may not be required by all Google Analytics users, such as ecommerce or cross-domain tracking, and are therefore not included in analytics...

google-analytics • Getting started with google-analytics

What data does the tracking snippet capture?

When you add either of these tracking snippets to your website, you send a pageview for each page your users visit. Google Analytics processes this data and can infer a great deal of information including: The total time a user spends on your site. The time a user spends on each page and in what o...

google-analytics • Getting started with google-analytics

using GNU coreutils

So the GNU coreutils should be avaialable on all linux based systems (please correct me if I am wrong here). If you do not know what system you are using you may not be able to directly jump to one of the examples above, hence this may be your first port of call. `$ uname -a On my system this giv...

GNU/Linux • Detecting Linux distribution name and version

Setup Codecommit for git command line

AWS Codecommit can be used as storage for private GIT repositories. The setup involves a few steps, assuming you have a valid AWS account already. Sign up for AWS Codecommit. Currently only region us-east-1 is available. Create a IAM user who will have access to the repositories, eg codecommit-u...

aws-cli • aws-codecommit for local git

Install SBT on Linux

Full instructions can be found here. Install the JDK. Set the Java Environment variable. export JAVA_HOME=/usr/local/java/jdk1.8.0_102 echo $JAVA_HOME /usr/local/java/jdk1.8.0_102 export PATH=$PATH:$JAVA_HOME/bin/ echo $PATH ...:/usr/local/java/jdk1.8.0_102/bin/ Install Scala....

sbt • Getting started with sbt

Adding more than one google auto complete activity.

public static final int PLACE_AUTOCOMPLETE_FROM_PLACE_REQUEST_CODE=1; public static final int PLACE_AUTOCOMPLETE_TO_PLACE_REQUEST_CODE=2; fromPlaceEdit.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { ...

Android • Android Places API

Using cfquery within a Function

<cffunction name="getUserById" access="public" returntype="query"> <cfargument name="userId" type="numeric" required="yes" hint="The ID of the user"> <cfquery name="local.qryGetUser" datasource...

coldfusion • cfquery

Inspecting Meteor Objects on the Client

Since Nightwatch has access to the browser console, it's possible to inspect client side objects using the .execute() API. In the following example, we're checking the Session object for a particular session variable. First, we begin by creating the file ./tests/nightwatch/api/meteor/checkSession...

meteor • Acceptance Testing (with Nightwatch)

Forms & Input Types

To upload a file, you'll first need to create a /data directory, and add the file you'll want to upload. tests/nightwatch/data/IM-0001-1001.dcm Your form will need an input with type of file. (Some people don't like the styling options this input provides; and a common pattern is to make this in...

meteor • Acceptance Testing (with Nightwatch)

Calling C Function From Go

Cgo enables the creation of Go packages that call C code. To use cgo write normal Go code that imports a pseudo-package "C". The Go code can then refer to types such as C.int, or functions such as C.Add. The import of "C" is immediately preceded by a comment, that comment, call...

Go • cgo

Appending a new row to DataFrame

In [1]: import pandas as pd In [2]: df = pd.DataFrame(columns = ['A', 'B', 'C']) In [3]: df Out[3]: Empty DataFrame Columns: [A, B, C] Index: [] Appending a row by a single column value: In [4]: df.loc[0, 'A'] = 1 In [5]: df Out[5]: A B C 0 1 NaN NaN Appending a ...

pandas • Appending to DataFrame

Symfony validation using annotations

Enable validation using annotations in app/config/config.yml file framework: validation: { enable_annotations: true } Create an Entity in AppBundle/Entity directory. The validations are made with @Assert annotations. <?php # AppBundle/Entity/Car.php namespace AppBundle\Ent...

symfony3 • Validation

Symfony validation using YAML

Create an Entity in AppBundle/Entity directory. You can do this manually, or by using Symfony's command php bin/console doctrine:generate:entity and filling in the required information in each step. You must specify yml option at Configuration format (yml, xml, php or annotation) step. <?php...

symfony3 • Validation

installing via composer (github)

1 cd my/project/dir 2 git clone git://github.com/zendframework/ZendSkeletonApplication.git 3 cd ZendSkeletonApplication 4 php composer.phar self-update 5 php composer.phar install

zend-framework2 • Installation

Getting Started with OpenCV 3.1 on Windows

We install OpenCV 3.1.0 on Windows and get started. There are two ways to install OpenCV on windows. One is to download the installer and run it. Other is to build from source. This is the easiest way to install OpenCV and get started. OpenCV gives pre-build binaries to install on Windows here. Aft...

opencv • Getting started with opencv