Dennis denniszhao

🎯

Focusing

denniszhao / lab6.md

Created September 30, 2015 19:30

CS61B Lab 6

~ number: 6 ~ title: Collections, Iterators, and Meta-iterators

Navigation

denniszhao / YouTube video duration to seconds

Created April 13, 2015 20:56

	/**
	* Converts YouTube formatted duration to seconds.
	*
	* Expects input String of the form "PT#M#S", in which the letters PT indicate
	* that the value specifies a period of time, and the letters M and S refer to
	* length in minutes and seconds, respectively. The # characters preceding the
	* M and S letters are both integers that specify the number of minutes (or
	* seconds) of the video. For example, a value of PT15M51S indicates that the
	* video is 15 minutes and 51 seconds long.
	*/

denniszhao / gist:3faa9ad74383274d004c

Created January 13, 2015 05:41

formatTime

	/**
	* Formats number of seconds to hh:mm:ss format.
	*/
	formatTime: function (seconds) {
	var minutes = Math.floor(seconds / 60),
	hours = Math.floor(minutes / 60),
	h = (hours !== 0) ? hours + ":" : "",
	m = (minutes % 60 !== 0) ? (minutes % 60) + ":" : ((h === "") ? "" : "00:"),
	s = (seconds % 60 !== 0) ? (seconds % 60) : "00";

denniszhao / clever_avg_students_per_section

Created October 8, 2014 05:11

	/**
	*
	* Computes the average number of students per section in the sandbox/demo API.
	*
	*/

	var request = require('request');

	// We know that there's only one district in the dummy data from a call
	// to the `districts` endpoint, ie

denniszhao / gist:7b324b8f8900589ff68f

Created August 15, 2014 20:01

	function isValidUSPhoneNum(number) {
	// Matches valid US numbers of the form
	// xxx (whitespace or -) xxx (whitespace or -) xxxx
	var USPhoneNumRegex = /^(?:$[2-9][0-9]{2}$(?:[\s]\|[-])\|[2-9][0-9]{2}(?:[\s]\|[-]))[0-9]{3}(?:[\s]*\|[-])[0-9]{4}$/;

	// booleanize bitch
	return !!number.match(USPhoneNumRegex);
	}

denniszhao / gist:21c24ee200291fb7a6e6

Created August 15, 2014 19:56

Return true if valid phone number

	function isValidUSPhoneNum(number) {
	var USPhoneNumRegex = /^(?:$[2-9]{3}$(?:[\s]\|[-])\|[2-9]{3}(?:[\s]\|[-]))[0-9]{3}(?:[\s]*\|[-])[0-9]{4}$/;

	// booleanize
	return !!number.match(USPhoneNumRegex);
	}

denniszhao / gist:7bae86328257a6345154

Created August 4, 2014 02:46

Utility script to get department codes and course UIDs for all classes at Cal through the dev api.

	/**
	*
	* Little utility script to get list of all department codes
	*
	*/

	var request = require('request');
	var async = require('async');
	var _ = require('lodash');
	var fs = require('fs');

	function isValidUSPhoneNum(number) {
	var USPhoneNumRegex = /^(?:\([2-9]{3}\)(?:[\s]\|[-])\|[2-9]{3}(?:[\s]\|[-]))[0-9]{3}(?:[\s]*\|[-])[0-9]{4}$/;

	// booleanize
	return !!number.match(USPhoneNumRegex);
	}