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function is_touch_device() {
  return 'ontouchstart' in window // works on most browsers 
      || 'onmsgesturechange' in window; // works on ie10
};

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	/**
	 * Get current URL
	 * 
	 * @return string
	 */
	function current_url(){
		global $wp;

		$current_url = trailingslashit( home_url( $wp->request ) ); 

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/**
 * Removing / Dequeueing All Stylesheets And Scripts on Particular Page
 * 
 * @return void
 */
function fr_dequeue_enqueue_styles_scripts(){
	global $wp_styles, $wp_scripts;
	
	// Note: You may want to add some conditional tag so this will only happen on particular page
	// Let's say you want to do this on contact page

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<pre>
	<?php echo htmlspecialchars( file_get_contents( $url_to_be_copy_pasted ) ); ?>
</pre>

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/**
 * Get YouTube Video ID by YouTube URL
 * 
 * @param string YouTube video URL
 * 
 * @return string YouTube video ID
 */
function get_youtube_id_by_url( $url ){
    // Parse URL
    $parsed_url = parse_url($url);

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<?php
	// Update the date in given condition
	if( isset( $GLOBALS['wp_query'] ) && is_sticky() ){
		$GLOBALS['wp_query']->has_sticky = true;
	}

	if( isset( $GLOBALS['wp_query'] ) && !is_sticky() ){	
		
		// Define date index
		if( !isset( $GLOBALS['wp_query']->opus_date ) ){		

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/**
 * Check if current page is signup page or not
 *
 * @return boolean
 */
function is_signup(){
    global $wp;

    if( 'wp-signup.php' == $wp->request ){
        return true;

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/**
 * Modify URL's query string
 * 
 * @param string url to be modified
 * @param array of query strings
 * 
 * @return string of modified url
 */
function fr_modify_url( $url = '', $query_string_args = array() ){

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/**
 * Modifying excerpt's length
 * 
 * @return int
 */
function yourtheme_excerpt_length(){
	return 20;
}
add_filter( 'excerpt_length', 'yourtheme_excerpt_length' );

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function force_ssl_for_all( $force_ssl, $post_id = 0, $url = '' ){
    return true;
}
add_filter( 'force_ssl', 'force_ssl_for_all', 10, 3 );