simplify

问题 I have a full list of timezones in a select menu like so: <option value="Pacific/Kosrae"> Pacific/Kosrae( +11:00 GMT ) </option> <option value="Pacific/Kwajalein"> Pacific/Kwajalein( +12:00 GMT ) </option> <option value="Pacific/Majuro"> Pacific/Majuro( +12:00 GMT ) </option> <option value="Pacific/Marquesas"> Pacific/Marquesas( -09:30 GMT ) </option> <option value="Pacific/Midway"> Pacific/Midway( -11:00 GMT ) </option> the list goes on forever. I want to change each of the options into this

问题 I am making a site and this code lets me have several pages in 1 .html file. Can the iterative-ness of this code be avoided? Can it be simplified? <script type="text/javascript"> var x = 300; $(function() { $("#indexLink").click(function() { $("#content>div").not("#start").hide(x); $("#index").show(x); $('nav>ul>li').removeClass('active'); $('#indexLink').addClass('active'); }); $("#leerlingLink").click(function() { $("#content>div").not("#start").hide(x); $("#leerling").show(x); $('nav>ul>li

问题 I've got this code but it's a bit repeating itself, is there a way to make it shorter? jQuery(document).ready(function() { var allTabs = jQuery('#front, #blog, #portfolio, #pages, #colors, #fonts'); allTabs.hide(); jQuery('#front-show').click(function() { event.preventDefault(); allTabs.hide(); jQuery('#front').show(); }); jQuery('#blog-show').click(function() { event.preventDefault(); allTabs.hide(); jQuery('#blog').show(); }); jQuery('#portfolio-show').click(function() { event

问题 I have a super class, that 40 other clases inherit, at this point I would like to simplify the diagram, to be exact all the inheritance relations (40 relations point to a single class) all these "arrows" just make the diagram a complete mess, Is it posible to simplify this? 回答1: There is no direct way to simplify such case in UML Specs, but really 40 classes to inherit from one class? I think you may need to re-consider your design again. In general, you can omit attributes and methods from

问题 I'm creating a rather dense GraphicsPath by following the MouseMove event. Besides filtering during the movement, is there a routine to simplify the GraphicsPath after the fact? I also want to implement a 'vector-based flood fill' now and this will create another really dense path. I guess I will have to step through it and compare the directions of each line until it changes more than a limit or until the changes add up to this limit. Or I could simply erase every other point. Rather crude.

问题 I'm coding a worksheet app for a printer company. I'm getting flood of forms. For every single input field I have to check if the $_POST variables are set, and if, so echo back the value. (In case of some error, for example after a validation error, the user shouldn't retype the whole form) Sample code: if(isset($_POST['time'])&&!empty($_POST['time'])){echo $_POST['time'];} I had to implement this about a hundred times. So I tried to figure out some kind of function to make this simple and

问题 I am writing some code for a website that uses 4 list items to show/hide 4 different divs at a different place on the page. Here is a rough example of what I am doing: <ul> <li id="first">One</li> <li id="second">Two</li> <li id="third">Three</li> <li id="fourth">Four</li> </ul> <div id="one">This is the first div</div> <div id="two">This is the second div</div> <div id="three">This is the third div</div> <div id="four">This is the four div</div> And I've got some ugly arse JS code going on,

问题 please help me with simplifying this one. I am a bit new to these.. (A'BC') + (A'B'C) + (A'BC) + (AB'C) the book i use shows and answer, which is, Answer = A'B + B'C I tried simplifying, but I get stucked with two eXors, my simplification so far goes like this... (A'BC') + (A'B'C) + (A'BC) + (AB'C) A (BC' + B'C) + C (A'B + AB') This doesn't seem to be a write way, Please someone help me simplify this, and please show step by step, as I am sort of new.. Also I don't get how to simplify eXor

问题 I have these two tables: CITY TABLE CLUB TABLE What I'm trying to do, is to select with the same query all cities that contain published clubs ( published field set to 1) and the total of clubs published in that city. At the moment, I am doing it with two steps, but I would like to improve performance by merging these in just one query. SELECT c.id, c.name, c.slug FROM city c, club cl WHERE c.id = cl.city_id AND ( SELECT COUNT(*) FROM club cl, city c WHERE cl.city_id = c.id AND cl.published =

问题 I'm pretty sure there is a way to shorten this, but I don't know how. img[1] = $('#img1').attr('src'); img[2] = $('#img2').attr('src'); img[3] = $('#img3').attr('src'); img[4] = $('#img4').attr('src'); title[1] = $('#title1').text(); title[2] = $('#title2').text(); title[3] = $('#title3').text(); title[4] = $('#title4').text(); desc[1] = $('#description1').attr('value'); desc[2] = $('#description2').attr('value'); desc[3] = $('#description3').attr('value'); desc[4] = $('#description4').attr(