Tutorial by Examples: all

A try-except block may be nested inside a try-finally block. AcquireResource; try UseResource1; try UseResource2; except on E: EResourceUsageError do begin HandleResourceErrors; end; end; UseResource3; finally ReleaseResource; end; If an EResourceUsageE...

Run the following command, replacing username with the username, to clone all of the GitHub repositories for that user to the current directory. curl "https://api.github.com/users/username/repos?page=1&per_page=100" | grep -e 'git_url*' | cut -d \" -f 4 | xargs -L1 git clone T...

Testing without installing For new users who wish to start testing Coq without installing it on their machine, there is an online IDE called JsCoq (presentation here). The package sub-window allows testing various well-known additional packages. Installation The download page contains installers ...

The best way to get started with Salesforce is to get your own Developer Edition. Developer Edition (often referred to as a "DE org") is a fully-featured development environment with limits on data and users. Developer Edition is where you can get familiar with the environment, try out st...

In order to use libraries in CodeIgniter, you need to create a library. class Pro { function show_hello_world() { return 'Hello World'; } } In this library, which is called is pro.php, this file must be added to the following path. Path: \xampp\htdocs\project\application\librarie...

[timer fire]; Calling the fire method causes an NSTimer to perform the task it would have usually performed on a schedule. In a non-repeating timer, this will automatically invalidate the timer. That is, calling fire before the time interval is up will result in only one invocation. In a repeat...

Syntax $this->load->model('model_name'); $this->model_name->method_name(); Practice $this->load->model('home_model'); $this->home_model->get_data();

Go to https://www.arduino.cc/en/Main/Software Click the "Windows Installer" link Follow the instructions

Open a terminal and run: sudo dnf install arduino Open the Arduino application, or type arduino into the terminal

Open a terminal and run: sudo apt-get install arduino Open the Arduino application, or type arduino into the terminal

zf{motion} creates a fold that covers the text that "motion" would cover. {count}zF creates a fold that covers "count" lines. {range}fo[ld] creates a fold for the lines in the provided range. All three commands are valid only when foldmethod is set to manual or marker. In ...

Applying css intuitively doesn't produce the desired results because vertical-align:middle isn't applicable to block-level elements margin-top:auto and margin-bottom:auto used values would compute as zero margin-top:-50% percentage-based margin values are calculated relative to the width of ...

A VHDL program can be simulated or synthesized. Simulation is what resembles most the execution in other programming languages. Synthesis translates a VHDL program into a network of logic gates. Many VHDL simulation and synthesis tools are parts of commercial Electronic Design Automation (EDA) s...

import Test.Tasty import Test.Tasty.SmallCheck as SC import Test.Tasty.QuickCheck as QC import Test.Tasty.HUnit main :: IO () main = defaultMain tests tests :: TestTree tests = testGroup "Tests" [smallCheckTests, quickCheckTests, unitTests] smallCheckTests :: TestTree smal...

First, Install Java SE Development Kit This can be as simple as downloading, double-clicking on the downloaded file, and following the installation instructions. For install Java SE Development Kit download it from official web site. Java SE Development Kit. Downloads After JDK install is complete...

Prerequisite steps: Install Java at your machine Visit neo4j website and click the link "Download Community Edition" or visit directly the download link. Unzip the .tar downloaded file in your home directory Start Neo4j from console (headless, without web server) Visit the sub-d...

If you get an error like this: Fatal error: Call to a member function fetch_assoc() on boolean in C:\xampp\htdocs\stack\index.php on line 7 Other variations include something along the lines of: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given... These errors mean that t...

This will only install PHP. If you wish to serve a PHP file to the web you will also need to install a web-server such as Apache, Nginx, or use PHP's built in web-server (php version 5.4+). If you are in a Ubuntu version below 16.04 and want to use PHP 7 anyway, you can add Ondrej's PPA repo...

My first Wicket setup, app showing Hello World on home screen: import org.apache.wicket.protocol.http.WebApplication; public class HelloWorldApplication extends WebApplication { public HelloWorldApplication() { } @Override public Class getHomePage() { retur...

It's easier to implement some UDFs on the worksheet if full column references can be passed in as parameters. However, due to the explicit nature of coding, any loop involving these ranges may be processing hundreds of thousands of cells that are completely empty. This reduces your VBA project (and ...