Tutorial by Examples: u

The names of modules follow the filesystem's hierarchical structure. With the following file layout: Foo/ ├── Baz/ │ └── Quux.hs └── Bar.hs Foo.hs Bar.hs the module headers would look like this: -- file Foo.hs module Foo where -- file Bar.hs module Bar where -- file Foo/Bar.hs m...

systemd provides a modern implementation of cron. To execute a script periodical a service and a timer file ist needed. The service and timer files should be placed in /etc/systemd/{system,user}. The service file: [Unit] Description=my script or programm does the very best and this is the descri...

Detailed instructions on getting slick set up or installed. http://kenwheeler.github.io/slick/ Slick Slider is easy to use and to customise. It provides good amount of customisation options including responsive options based on breakpoints. To get started with slick, it is not that difficult. Jus...

C# Visual Studio 2015 (latest update) - you can download the community version here for free: www.VisualStudio.com Important: update all VS extensions to their latest versions Tools->Extensions and Updates->Updates Download the Bot Application template from here: Template Dow...

XML Example The below configuration configures two appenders (log output). The first logs to standard system output (console) and the other logs to file. In this example, the location of the file can be set statically in configuration (appender file) or dynamically via maven filtering feature (<...

Recursive functions can get quite expensive. If they are pure functions (functions that always return the same value when called with the same arguments, and that neither depend on nor modify external state), they can be made considerably faster at the expense of memory by storing the values already...

update <SCHEMA_NAME>.<TABLE_NAME_1> AS A SET <COLUMN_1> = True FROM <SCHEMA_NAME>.<TABLE_NAME_2> AS B WHERE A.<COLUMN_2> = B.<COLUMN_2> AND A.<COLUMN_3> = B.<COLUMN_3>

To check the list of loaded packages search() OR (.packages())

Model With EF Core, data access is performed using a model. A model is made up of entity classes and a derived context that represents a session with the database, allowing you to query and save data. You can generate a model from an existing database, hand code a model to match your database, or ...

Standard Version To install the standard version, go to the Plugin section of your WordPress installation. Search for "Advanced Custom Fields" and install/activate. You will now have access to a new area in the WordPress administrative area labeled "Custom Fields" where you can ...

<?php echo get_field('my_field_name', 123); ?> This will echo the value of "my_field_name" from the post with 123 as its ID.

<?php echo get_field('my_field_name', 'option'); ?> This will echo the value of "my_field_name" from the options page created via ACF.

A typical payment flow with Stripe can be divided in two steps: Client-side, in your frontend (HTML + Javascript) code, you collect the customer's payment information using Stripe's prebuilt Checkout form or Elements form field(s). This will return a token that you then send to your server. ...

Fabric.js is just like any other JS library just specific to canvas. Easy to setup and get started. All you need to do is download the fabric.js from HERE and include it in your project just like any other JS library for example the way you do it for jQuery. Then create the html file suppose index.h...

First of all we need to add MEDIA_ROOT and MEDIA_URL to our settings.py file MEDIA_ROOT = os.path.join(BASE_DIR, 'media') MEDIA_URL = '/media/' Also here you will work with ImageField, so remember in such cases install Pillow library (pip install pillow). Otherwise, you will have such error: I...

The setCustomTitle() method of AlertDialog.Builder lets you specify an arbitrary view to be used for the dialog title. One common use for this method is to build an alert dialog that has a long title. AlertDialog.Builder builder = new AlertDialog.Builder(context, Theme_Material_Light_Dialog); buil...

To read an atom's value, simply put the name of the atom, with a @ before it: @counter ; => 0 A bigger example: (def number (atom 3)) (println (inc @number)) ;; This should output 4

There are two commands to change an atom, swap! and reset!. swap! is given commands, and changes the atom based on its current state. reset! changes the atom's value completely, regardless of what the original atom's value was: (swap! counter inc) ; => 1 (reset! counter 0) ; => 0 This e...

Dim copycars(), cars(2), x Redim copycars(0) x = 0 cars(0) = "Ford" cars(1) = "Audi" cars(2) = "Prius" Do Until x = ubound(cars) copycars(ubound(copycars)) = cars(x) redim preserve copycars(ubound(copycars)+1) x = x + 1 Loop redim preserve copycar...

First Execute CREATE EXTENSION DBLINK; Then INSERT INTO <SCHEMA_NAME>.<TABLE_NAME_1> SELECT * FROM DBLINK( 'HOST=<IP-ADDRESS> USER=<USERNAME> PASSWORD=<PASSWORD> DBNAME=<DATABASE>', 'SELECT * FROM <SCHEMA_NAME>.<TABLE_NAME_2...