Tutorial by Examples: a

Multi-Tables Query

This query will join three tables: Customer, Order and Orderline. The use of the OF statement as in childtable OF parenttable assumes that indexes are constructed in a specific way. That is the case in the sports2000-database. DEFINE QUERY q1 FOR Customer, Order, Orderline. OPEN QUERY q1 FOR EA...

progress-4gl • Queries

Using informats to read data

Informats are used to tell SAS how to read in the data and are identified with an informat statement. data test; infile test.csv; informat id $6. date mmddyy10. cost comma10.2 ; input @1 id @7 date @20 cost ; run; Informats and Format...

sas • SAS Formats

Installation and Setup

Keras is a high-level neural networks library, written in Python and capable of running on top of either TensorFlow or Theano. It was developed with a focus on enabling fast experimentation. Being able to go from idea to result with the least possible delay is key to doing good research. Use Keras ...

keras • Getting started with keras

Accessing variables

In Twig templates variables can be accessed using double curly braces notation {{ variableName }}. Basic example of greeting user <!DOCTYPE html> <html> <body> <span>Hello {{ name }}</span> </body> </html> Accessing array elements Twig as ...

twig • Basic template syntax

Find a PowerShell module using a pattern

To find a module that ends with DSC Find-Module -Name *DSC

PowerShell • Package management

Create the default PowerShell Module Reposity

If for some reason, the default PowerShell module repository PSGallery gets removed. You will need to create it. This is the command. Register-PSRepository -Default

PowerShell • Package management

Find a module by name

Find-Module -Name <Name>

PowerShell • Package management

Install a Module by name

Install-Module -Name <name>

PowerShell • Package management

Uninstall a module my name and version

Uninstall-Module -Name <Name> -RequiredVersion <Version>

PowerShell • Package management

Update a module by name

Update-Module -Name <Name>

PowerShell • Package management

log_message()

This function lets you write messages to your log files. You must supply one of three "levels" in the first parameter, indicating what type of message it is (debug, error, info), with the message itself in the second parameter. Example: if ($some_var == "") { log_message('...

codeigniter • Error Handling

Basic spring security with annotation, SQL datasource

@Configuration public class AppSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired DataSource dataSource; @Autowired public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception { auth.jdbcAuthentication().dataSource(dataSource) .pa...

spring-security • Spring Security config with java (not XML)

What is Selenium Grid?

Selenium-Grid is a configuration of Hub & Node which allows you to run your tests on different machines against different browser combinations in parallel. That is, running multiple tests at the same time against different machines running different browsers on different operating systems. In ot...

selenium-grid • Getting started with selenium-grid

What is a Hub & Node?

The Hub The Hub is the main engine/central point of the entire configuration, point where all the nodes are connected. Hub should run only on a single machine. There should only be 1 hub running where all the tests are loaded. Tests will be run on the machines where hub is running, but you can...

selenium-grid • Getting started with selenium-grid

Installation or Setup

Before setting up a Selenium grid you need to make sure you have Java installed and configured in your computer’s environment path. Configure the Hub Download latest stable Selenium Server version. Start the command prompt and navigate to the location in which you placed the Selenium server jar...

selenium-grid • Selenium Grid Configuration

Cache Using APC Cache

The Alternative PHP Cache (APC) is a free and open opcode cache for PHP. Its goal is to provide a free, open, and robust framework for caching and optimizing PHP intermediate code. installation sudo apt-get install php-apc sudo /etc/init.d/apache2 restart Add Cache: apc_add ($key, $value , $t...

PHP • Cache

Basic implementation

Person Microdata <section itemscope itemtype="http://schema.org/Person"> Hello, my name is <span itemprop="name">John Doe</span>, I am a <span itemprop="jobTitle">Graduate research assistant</span> at the <span itempr...

schema.org • Getting started with schema.org

Scalar Types

Integers Signed: i8, i16, i32, i64, isize Unsigned: u8, u16, u32, u64, usize The type of an integer literal, say 45, will be automatically inferred from context. But to force it, we add a suffix: 45u8 (without space) will be typed u8. Note: Size of isize and usize depend on the architecture. On ...

Rust • Primitive Data Types

Anti-Patterns and gotchas

Locking on an stack-allocated / local variable One of the fallacies while using lock is the usage of local objects as locker in a function. Since these local object instances will differ on each call of the function, lock will not perform as expected. List<string> stringList = new List<st...

C# Language • Lock Statement

Installation or Setup

Detailed instructions on getting data-warehouse set up or installed.

data-warehouse • Getting started with data-warehouse

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