davidshq

What is the appeal of dynamically-typed languages?

Kris Nuttycombe asks:

I genuinely wish I understood the appeal of unityped languages better. Can someone who really knows both well-typed and unityped explain?

I think the terms well-typed and unityped are a bit of question-begging here (you might as well say good-typed versus bad-typed), so instead I will say statically-typed and dynamically-typed.

I'm going to approach this article using Scala to stand-in for static typing and Python for dynamic typing. I feel like I am credibly proficient in both languages: I don't currently write a lot of Python, but I still have affection for the language, and have probably written hundreds of thousands of lines of Python code over the years.

davidshq

In this article I'm going to walk you through the process of creating Wordpress plugins. First I'm going to talk about some of the basic concepts in Wordpress plugin development like the actions, hooks, and API's that make up Wordpress. Then we're going to build a plugin where we apply some of the concepts and best practices in developing Wordpress plugins.

Prerequisites

In order to fully benefit from this tutorial:

• You should have a basic knowledge of PHP
• A running instance of WordPress with access to PHP
• Beginner knowledge of HTML, CSS, and JavaScript is helpful but not required

davidshq

<?php
function mytheme_customize_register( $wp_customize ) 
{ 
	$wp_customize->add_panel();
	$wp_customize->get_panel();
	$wp_customize->remove_panel(); 
}
add_action( 'customize_register', 'mytheme_customize_register' );
?>

davidshq

<?php
$wp_customize->add_control( 
  new WP_Customize_Color_Control( 
    $wp_customize, 'color_control', array( 
      'label' => __( 'Accent Color', 'theme_textdomain' ), 'section' => 'media', 
      ) 
    ) );
?>

davidshq

<?php
$wp_customize->add_control( 
  new WP_Customize_Media_Control( 
    $wp_customize, 'image_control', array( 
      'label' => __( 'Featured Home Page Image', 'theme_textdomain' ), 
      'section' => 'media', 
      'mime_type' => 'image', // other options, e.g. audio 
      ) 
  ) );
?>

davidshq

<?php
$wp_customize->add_setting( 'setting_id', array(
  'type' => 'theme_mod', // or 'option'
  'capability' => 'edit_theme_options',
  'theme_supports' => '', // Rarely needed
  'default' => '',
  'transport' => 'refresh', // or postMessage
  'sanitize_callback' => '',
  'sanitize_js_callback' => '', // Essentially converts to JSON
  ) );

davidshq

<?php
$wp_customize->add_setting(
  'custom_theme_css' , array(
  'type'    => 'theme_mod',
) );

$wp_customize->add_setting(
  'custom_plugin_css' , array(
  'type'    => 'option',
) );

davidshq

<?php
function output_css_setting() {
  echo '<style type="text/css" id="custom-theme-css">' . get_theme_mod( 'custom_theme_css', '') . '</style>';
  echo '<style type="text/css" id="custom-plugin-css">' . get_option( 'custom_plugin_css', '' ) . '</style>';
}
add_action( 'wp_head', 'theme_custom_css_output');
?>

davidshq

<?php
$wp_customize->add_control( 'setting_name', array(
  'type' => 'date',
  'priority' => 10, // Within the section.
  'section' => 'colors', // Required, can be either a built-in or custom.
  'label' => __( 'Date' ),
  'description' => __( 'This is a date control with a red border.' ),
  'input_attrs' => array(
    'class' => 'my-custom-class-for-js',
    'style' => 'border: 1px solid #900',

davidshq

<?php
$wp_customize->add_section( 'custom_css', array(
  'title' => __( 'Custom CSS' ),
  'description' => __( 'Add custom CSS here' ),
  'panel' => '', // Not typically needed
  'priority' => 160,
  'capability' => 'edit_theme_options',
  'theme_supports' => '', // Rarely needed
) );
?>