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  • How do I push `sed` matches to the shell call in the replacement pattern?

    - by rassie
    I need to replace several URLs in a text file with some content dependent on the URL itself. Let's say for simplicity it's the first line of the document at the URL. What I'm trying is this: sed "s/^URL=\(.*\)/TITLE=$(curl -s \1 | head -n 1)/" file.txt This doesn't work, since \1 is not set. However, the shell is getting called. Can I somehow push the sed match variables to that subprocess?

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  • Connect to mercurial via ssh on windows

    - by richzilla
    Can anyone point me in the direction of a simple step by step guide as to how to connect to a mercurial repo via ssh on windows. Im really struggling to get my head around it, and so far i jus keep getting a string of errors. Any help would be appreciated.

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  • json null error help in php

    - by bobby
    I get 'json is null' as error My php file: <?php if (isset($_REQUEST['query'])) { $query = $_REQUEST['query']; $url='https://www.googleapis.com/urlshortener/v1/'; $key='ApiKey'; $result= $url.($query).$key; $ch = curl_init($result); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,1); $resp = curl_exec($ch); curl_close($ch); echo $resp; } ?> My html: <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function(){ // when the user clicks the button $("button").click(function(){ $.getJSON("shortner.php?query="+$('#query').attr("value"),function(json){ $('#results').append('<p>Id : ' + json.id+ '</p>'); $('#results').append('<p>Longurl: ' + json.longurl+ '</p>'); }); }); }); </script> </head> <body> <input type="text" value="Enter a place" id="query" /><button>Get Coordinates</button> <div id="results"></div> Edited : <?php if (isset($_REQUEST['query'])) { $query = $_REQUEST['query']; $url='https://www.googleapis.com/urlshortener/v1/'; $key='Api'; $key2='?key='; $result= $url.$query.$key2.$key; $requestData= json_encode($result); echo var_dump($query); $ch = curl_init($requestData); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,1); $resp = curl_exec($ch); curl_close($ch); echo $resp; } ?>

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  • Can't figure out the color of an svg element

    - by yass
    I have a very simple HTML page, viewable on gh-pages with the following code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link href="style.css" media="screen" rel="stylesheet" type="text/css"> <script src='http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'> </script> </head> <body> <div id="page"> <div id="content"> <div id="heatmap"> <svg style="margin-left: 80px; color: rgb(255, 255, 255);" width="800" height="880"> <g transform="translate(80,80)"> <rect style="color: rgb(255, 255, 255);" height="720" width="720"> </rect> </g> </svg> </div> </div> </div> </body> </html> with the following CSS: body { background-color: #FFFFFF; font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: #FFFFFF; } #wrapper { margin: 0 auto; padding: 0; } #page { width: 1000px; margin: 0 auto; padding: 40px 0px 0px 0px; } #content { float: left; width: 660px; padding: 0px 0px 0px 0px; background: #FFFFFF; } I expect the rectangle, 'svg rect' to be the color #FFFFFF, or white. But it shows up as some other color. I opened it up in firebug, and it shows the computed color to be #FFFFF:

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  • ASP.NET Drop Down list , the button function not firing after the first click

    - by Pinu
    ASP.Net Dropdownlist , on changing the value of drop down list and clicking the button it is not sending an upadted value to the New.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test_DropDown.aspx.cs" Inherits="Test_DropDown" % <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:DropDownList ID="ddl_test" runat="server" OnSelectedIndexChanged="ddl_test_SelectedIndexChanged" AutoPostBack="true"> <asp:ListItem>First Item</asp:ListItem> <asp:ListItem>Second Item</asp:ListItem> <asp:ListItem>Third Item</asp:ListItem> </asp:DropDownList> <asp:HiddenField ID="hdf_ddl" runat="server" /> <asp:Button ID="btn_test" runat="server" Text="Button" OnClick="Button1_Click" /> </div> </form> </body> </html> using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class Test_DropDown : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { string passValue = ddl_test.SelectedValue.ToString(); string val = hdf_ddl.Value.ToString(); btn_test.Attributes.Add("onclick", "window.open('New.aspx?ddlValue=" + val + "', 'OpenPopWindow','left=250,top=100,width=500,height=500,toolbar=1,resizable=0,status=0,menubar=0,scrollbars=1');return false;"); //btn_test.OnClientClick = "window.open('New.aspx?ddlValue=" + val + "', 'OpenPopWindow','left=250,top=100,width=500,height=500,toolbar=1,resizable=0,status=0,menubar=0,scrollbars=1');return false;"; } protected void ddl_test_SelectedIndexChanged(object sender, EventArgs e) { hdf_ddl.Value = ddl_test.SelectedValue.ToString(); } }

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  • Setting background-image with javascript

    - by Mattoe3k
    In chrome, safari, and opera setting the background image to an absolute reference such as: "/images/image.png" changes it to "http://sitepath/images/image.png". It does not do this in firefox. Is there any way to avoid this behavior, or is it written into the browser's javascript engine? Using jquery to set the background-image also does this problem. The problem is that I am posting the HTML to a php script that needs the urls in this specific format. I know that setting the image path relative fixes this, but I can't do that. The only other alternative would be to use a regexp. to convert the urls. Thanks. Test this in firefox, and chrome / webkit browser: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> <div style="height:400px;width:400px;background-image:url(/images/images/logo.gif);"> </div> <br /> <br /> <div id="test" style="height:400px;width:400px;"> </div> <script type="text/javascript" src="/javascripts/jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#test").css('background-image',"url(/images/images/logo.gif)"); alert(document.getElementById('test').style.backgroundImage); }); </script> </body> </html>

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  • php database image show problem

    - by Termedi
    here is the code <?php session_start(); if(!isset($_SESSION['user_name'])) { header('Location: login.php'); } $conn = mysql_connect("localhost", "root", "") or die("Can no connect to Database Server"); ?> <html> <head> </head> <body> <center> <div id="ser"> <form action="" method="post"> <label for="file">Card No:</label> <input type="text" name="card_no" id="card_no" class="fil" onKeyUp="CardNoLength()" onKeyDown="CardNoLength()" onKeyPress="CardNoLength()"/> <input type="submit" name="search" value="Search" class="btn" onClick="return CardNoLengthMIN()"/> </form> </div> </center> <br/><hr style="border: 1px solid #606060 ;" /> <center><a href="index.php">Home</a></center> <br/> <center> <?php if(isset($_POST['card_no'])) { if($conn) { if(mysql_select_db("img_mgmt", $conn)) { $sql = "select * from temp_images where card_no='".trim($_POST['card_no'])."'"; $result = mysql_query($sql); $image = mysql_fetch_array($result); if(isset($image['card_no'])) { //echo "<img src=\"".$image['file_path']."\" alt=\"".$image['card_no']."\" width=\"250\" height=\"280\"/>"; header("Content-type: image/jpeg"); echo $image['img_content']; } else { echo "<p style=\"color:red;\">Sorry, Your search came with no results ! <br/> Try with different card number"; } } else { echo "Database selection error: ".mysql_error(); } } else { echo "Could not connect: ".mysql_error(); } } ?> </center> </body> </html> But it after executing the script it shows: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\img\search.php:61) in C:\xampp\htdocs\img\search.php on line 77

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  • How to write an RDF Schema?

    - by trickdev
    I am trying to get my head around using RDF to describe custom resources. I understand there are xmlns' out there such as Dublin Core and foaf which provide predefined element sets. How do I go about creating my own? I may be barking up the wrong tree of course and should stick to xml + xsd?

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  • mysql insert and buffers, is this possible

    - by Grumpy
    how is this possible first i do insert into table2 select * from table1 where table1.id=1 ( 50k records should be moved 6 indexes has to be updated ) second delete from table1 where id=1 ( 50k records are removed ) How is it possible that only 45k of records are moved? Im scratching my head over this and cant find a right answer Is it possible that the insert is still active and delete already started

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  • Cannot delete a remote branch created unintentionally

    - by Himel
    $ git branch -a * SocialAct master remotes/origin/HEAD -> origin/master remotes/origin/SocialAct remotes/origin/social I want to delete the remote branch "remotes/origin/social", and applied folloing command: $ git branch -d -r origin/social Deleted remote branch origin/social (was 26f6f61). But I have no idea how to bring these changes remotely so that the branches are deleted from origin and everyone can see the changes. I tried git push but that does not work Any help.

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  • javascript div movement not working

    - by William
    For some reason I can't move this div at all. Can anyone help me out with why this won't work? <!DOCTYPE html> <html lang="en"> <head> <title>Move Div Test</title> <meta charset="utf-8" /> <link href="/bms/style.css" rel="stylesheet" /> <style> body { text-align: center; background-color: #ffffff;} #box { position: absolute; left: 610px; top: 80px; height: 50px; width: 50px; background-color: #ff0000;} </style> <script type="text/javascript"> document.onkeydown=function(event){keyDown(event)}; document.onkeyup=function(event){keyUp(event)}; var box = document.getElementById('box'); var speed = 5; var keys = new Array(256); var i = 0; for (i = 0;i <= 256; i++){ keys[i] = false; } function keyDown(event){ if(!event){ //for IE event = window.event; } keys[event.keyCode] = true; } function keyUp(event){ if(!event){ //for IE event = window.event; } keys[event.keyCode] = false; } function update(){ if(keys[37]) box.style.left = parseInt(box.style.left) - speed + "px"; if(keys[39]) box.style.left = parseInt(box.style.left) + speed + "px"; if(keys[38]) box.style.top = parseInt(box.style.top) - speed + "px"; if(keys[40]) box.style.top = parseInt(box.style.top) + speed + "px"; } setInterval('update();', 1000/60); </script> </head> <body> <div id="box">blah</div> </body> </html>

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  • Issue with blocking the UI during a onchange request - prevents other event from firing.

    - by jfrobishow
    I am having issues with jQuery blockUI plugins and firing two events that are (I think, unless I am loosing it) unrelated. Basically I have textboxes with onchange events bound to them. The event is responsible for blocking the UI, doing the ajax call and on success unblocking the UI. The ajax is saving the text in memory. The other control is a button with on onclick event which also block the UI, fire an ajax request saving what's in memory to the database and on success unblock the UI. Both of these work fine separately. The issue arise when I trigger the onchange by clicking on the button. Then only the onchange is fired and the onclick is ignored. I can change the text in the checkbox, click on the link and IF jQuery.blockUI() is present the onchange alone is fired and the save is never called. If I remove the blockUI both function are called. Here's a fully working example where you can see the issue. Please note the setTimeout are there when I was trying to simulate the ajax delay but the issue is happening without it. <html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script src="http://github.com/malsup/blockui/raw/master/jquery.blockUI.js?v2.31"></script> <script> function doSomething(){ $.blockUI(); alert("doing something"); //setTimeout(function(){ $.unblockUI(); //},500); } function save(){ $.blockUI(); //setTimeout(function(){ alert("saving"); $.unblockUI(); //}, 1000); } </script> </head> <body> <input type="text" onchange="doSomething();"> <a href="#" onclick="save()">save</a> </body> </html>

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  • Unexpected space between DIV elements

    - by jon
    my code for the php page displaying the divs <?php session_start(); require_once("classlib/mainspace.php"); if (isset($_SESSION['username'])==FALSE) { header("location:login.php"); } $user = new User($_SESSION['username']); ?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="style/style.css" /> <title>SimpleTask - Home</title> </head> <body> <div id="main"> <div id="menu"> <div id="items"> <ul> <li><a href="home.php">home</a></li> <li>&bull;</li> <li><a href="projects.php">my projects</a></li> <li>&bull;</li> <li><a href="comments.php">my comments</a></li> </ul> </div> <div id="user"> <p>Welcome, <?php echo $user->GetRealName(); ?><br/><a href="editprofile.php">edit profile</a> &bull; <a href="logout.php">logout</a></p> </div> </div> <div id="content"> <h1>HOME</h1> </div> <div id="footer"> <p>footer text goes here here here here</p> </div> </div> </body> </html> and you can find my CSS here http://tasker.efficaxdevelopment.com/style/style.css and to view the live page go here http://tasker.efficaxdevelopment.com/login.php username:admin password:password

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  • change maxlength depending of the option selected

    - by tuner3000
    I've seen similar questions posted and tried to change them to meet my needs but I don't know enough about javascript to do it. I need that when a user change the dropdown select, the "titre text field" maxlength is dynamically changed a, b c and d max maxlength should be 40 and e maxlength should be 2 my code is below, I don't know why but it is not working correctly: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>title page</title> </head> <body> <script type="text/javascript"> function changeValue(dropdown) { var option = dropdown.options[dropdown.selectedIndex].value, field = document.getElementById('titre'); if (option == 'a' || option == 'b' || option == 'c' || option == 'd') { field.maxLength = 40; } else if (option == 'e') { field.value = field.value.substr(0, 2); // before reducing the maxlength, make sure it contains at most two characters; you could also reset the value altogether field.maxLength = 2; } }? </script> <form action="converter.php" method="post"> <h2>Feel all field below:</h2> <div> Title: <input type="texte" name="titre" id="titre" maxLength="40"/> Format: <select id="format" name="format" onchange="changeValue(this);"> <option value="a">A</option> <option value="b">B</option> <option value="c">C</option> <option value="d">D</option> <option value="e">E</option> </select> </div> <div> <textarea name="texte" style="width: 415px; height: 155px;"></textarea> </div> <div> <input type="submit" value="OK" /> </div> </form> </body> </html>

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  • Select distinct values from a table field

    - by alj
    I'm struggling getting my head around the Django's ORM. What I want to do is get a list of distinct values within a field on my table .... the equivalent of one of the following: SELECT DISTINCT myfieldname FROM mytable (or alternatively) SELECT myfieldname FROM mytable GROUP BY myfieldname I'd at least like to do it the Django way before resorting to raw sql.

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  • Serialize JavaScript's navigator object

    - by kappa
    Hi, I'm creating a page to help diagnose the problem our users are experiencing with our web pages (you know, asking a user "What browser are you using?" usually leads to "Internet"). This page already submits to me all the HTTP headers and now I'm trying to have JavaScript give some more informations, so I thought it would be great to have the user's navigator JavaScript object and I started looking how to serialize it so I can submit it through a form. The problem is I'm not able to serialize the navigator object using any JSON library I know of, everyone returns an empty object (?!), so I decided to write an ad-hoc serializer. You can find the code here: <!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> function serialize (object) { var type = typeof object; if (object === null) { return '"nullValue"'; } if (type == 'string' || type === 'number' || type === 'boolean') { return '"' + object + '"'; } else if (type === 'function') { return '"functionValue"'; } else if (type === 'object') { var output = '{'; for (var item in object) { if (item !== 'enabledPlugin') { output += '"' + item + '":' + serialize(object[item]) + ','; } } return output.replace(/\,$/, '') + '}'; } else if (type === 'undefined') { return '"undefinedError"'; } else { return '"unknownTypeError"'; } }; $(document).ready(function () { $('#navigator').text(serialize(navigator)); }); </script> <style type="text/css"> #navigator { font-family: monospaced; } </style> <title>Serialize</title> </head> <body> <h1>Serialize</h1> <p id="navigator"></p> </body> </html> This code seems to work perfectly in Firefox, Opera, Chrome and Safari but (obviously) doesn't work in Internet Explorer (at least version 8.0), it complains that "Property or method not supported by the object" at line for (var item in object) {. Do you have any hint on how to fix the code or how to reach the goal (serialize the navigator object) by other means?

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  • MooTools request fails

    - by acoder
    Hi everyone, I am trying to achieve this task using MooTools. Description: I have three buttons. Two buttons outside myDiv and one button inside myDiv. A click on any of these buttons initiates an AJAX request (passing button variable to "button.php") and updates myDiv content based on the response text. So, after update, myDiv shows Button3 link + a message showing which button has been clicked. The problem: Everything seems to work fine but after several clicks, it happens that myDiv shows loader.gif image and stops. After this, if I wait a few moments, the browser sometimes stops working (gets blocked). I noticed this problem with IE6. Does anyone know what does this problem mean and how it can be avoided? index.html <html> <head> <script type="text/javascript" src="mootools/mootools-1.2.4-core-nc.js"></script> <script type="text/javascript" src="mootools/mootools-1.2.4.4-more.js"></script> <script type="text/javascript"> window.addEvent('domready', function() { $("myPage").addEvent("click:relay(a)", function(e) { e.stop(); var myRequest = new Request({ method: 'post', url: 'button.php', data: { button : this.get('id'), test : 'test' }, onRequest: function() { $('myDiv').innerHTML = '<img src="images/loader.gif" />'; }, onComplete: function(response) { $('myDiv').innerHTML = response; } }); myRequest.send(); }); }); </script> </head> <body> <div id="myPage"> <a href="#" id="button1">Button1</a> <a href="#" id="button2">Button2</a> <div id="myDiv"> <a href="#" id="button3">Button3</a> </div> </div> </body> </html> button.php <a href="#" id="button3"Button3</a> <br><br> <?php echo 'You clicked ['.$_REQUEST['button'].']'; ?>

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  • How to display an external content in my website using javascript

    - by Chris
    Hello! This is my first post! I have a question about javascript...here is my code: <html> <head> <title>Geolocation Demo</title> </head> <body> <h1>Geolocation Demo</h1> <p>Latitude: <span id="lat">0.00</span> Longitude: <span id="lon">0.00</span> City: <span id="city">Loading...</span></p> <p><a id="city_link" href="http://tinygeocoder.com/" target="_blank">View City</a></p> <p><a id="gmaps_link" href="http://maps.google.co.uk/" target="_blank">View on Google Maps</a></p> <script language="javascript"> // show the position on the page and make a google maps link function showPosition(position) { var lat = position.coords.latitude; var lon = position.coords.longitude; document.getElementById("lat").innerHTML = lat; document.getElementById("lon").innerHTML = lon; var gmaps_url = "http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=" + lat + "+" + lon; var city_url = "http://tinygeocoder.com/create-api.php?g=" + lat + "," + lon; document.getElementById("gmaps_link").href = gmaps_url; document.getElementById("city_link").href = city_url; } </script> </body> </html> As you can see, this script target my geolocation. Specifically, Lat and Lon are working perfectly. In addinition, i want to display and region info (like city). So, i found a website which i provide the coordinates and it returns me a region name. My question is if i can display the name of region without clicking the link "View city" but in the field "city"...is it possible to pass the webpage content (http://tinygeocoder.com/create-api.php?g=" + lat + "," + lon;) into my webpage? The content of this page is only the name as i said...no html tags! Thank you!

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  • Rails only returns blank page

    - by user2793027
    I am new to Ruby on Rails and am trying to find all the orders for a given customer and then search through their order and total it all up. However when I try and test the page I only get a blank page, can anyone tell me why that might be? Also I am running Rails v. 2.3.14 <% # custdisplay.html.erb.rb %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head profile="http://gmpg.org/xfn/11"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <% # get the customer data from the customer table @custdata = Customer.find(@data) @orderinfo = Order.find(:all, :conditions => ["customer_id = ?",@custdata.id]) for i in [email protected] @total[i] = 0 @orderparts = Orderline.find(:all, :conditions => ["id = ?", @orderinfo[i].id]) for j in [email protected] @total[j] += @orderparts[i].quantity * @orderparts[i].price end end #for each quanity need to add up the part if @ordertotals.length > 0 %> <h1>customer data for customer: <%=@data %></h1> <table border=1> <tr> <td>Order Number</td> <td>Order Date</td> <td>Cost of Order</td> </tr> <% # for each customer who has this sales rep # display each customer in a row for @orderinfo in @ordertotals %> <tr> <td><%[email protected]%></td> <td><%[email protected]_date%></td> <td><%[email protected]%></td> </tr> <% end %> </table> <% else # no customers with this sales rep %> <h1>NO CUSTOMERS FOR SALES REP <%=@salesrepcust%></h1> <% end %>

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  • MapReduce programming system in java-actionscript

    - by eco_bach
    Just finished reading ch23 in the excellent 'Beautiful Code' http://oreilly.com/catalog/9780596510046 on Distributed Programming with MapReduce. I understand that MapReduce is a programming system designed for large-scale data processing problems, but I have a hard time getting my head around the basic examples given and how I might apply them in real world situations. Can someone give a simple example of MapReduce implemented using either java, javascript or actionscript?

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  • Mercurial Branching Oddity

    - by Steve Horn
    I'm trying to understand why the below is occuring: It appears that I have started another branch, but it has no name, and I do not remember creating a new branch. Why did this new head(branch) get created? How do I keep it from happening?

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  • Jetty servlet respons to Ajax always empty

    - by chris
    Hi I try to run a java server on Jetty which should respond to an ajax call. Unfortunately the response seems to be empty when I call it with ajax. When I call http://localhost:8081/?id=something I get an answer. The Java Server: public class Answer extends AbstractHandler { public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { String id = request.getParameter("id"); response.setContentType("text/xml"); response.setHeader("Cache-Control", "no-cache"); response.setContentLength(19+id.length()); response.setStatus(HttpServletResponse.SC_OK); response.getWriter().write("<message>"+id+"</message>"); //response.setContentType("text/html;charset=utf-8"); response.flushBuffer(); baseRequest.setHandled(true); } public static void main(String[] args) throws Exception { Server server = new Server(8081); server.setHandler(new Answer()); server.start(); server.join(); } } The js and html: <html> <head> <script> var req; function validate() { var idField = document.getElementById("userid"); var url = "validate?id=" + encodeURIComponent(idField.value); if (typeof XMLHttpRequest != "undefined") { req = new XMLHttpRequest(); } else if (window.ActiveXObject) { req = new ActiveXObject("Microsoft.XMLHTTP"); } req.open("GET", "http://localhost:8081?id=fd", true); req.onreadystatechange = callback; req.send(null); } function callback() { if (req.readyState == 4) { if (req.status == 200) { var message = req.responseXML.getElementsByTagName("message")[0]; document.getElementById("userid").innerHTML = "message.childNodes[0].nodeValue"; } } } </script> </head> <body onload="validate('foobar')"> <div id="userid">hannak</div> </body> </html> I'm actually don't know what I'm doing wrong here. Maybe someone has a good idea. greetings chris

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  • Why jQuery selector can't work but getElementById works in this scenario?

    - by Stallman
    Here is the HTML: <html> <head> <script type="text/javascript" src="jquery-1.7.2.min.js"></script> <script type="text/javascript" charset="utf-8" src="jquery-1.7.2.js"></script> <script type="text/javascript" src="access.js"></script> </head> <body> <button id="trigger"></button> <img id= "testElement" style= "position: absolute; border-color: white; top:340px; left:615px;" width="34px" height= "34px" /> </body> </html> And the access.js file is: $(document).ready( function(){ $('#trigger').click(function(){ $('#testElement').src="success.png"; //THIS WON'T WORK. document.getElementById('testElement').src= "success.png"; //BUT THIS WORKS. }); }); I know that if I use $, the return object is a jQuery object. It's not the same as getElementById. But why the jQuery selector can't work here? I need the jQuery object to make more operations like "append/style"... Thanks. UPDATE Too much correct answers appear at almost the same time... Please give more explanations to let me decide who I should give the credit, thanks!!! Sorry for my poor understanding of your correct answer... I just want more detail. Are all the attribute nodes(src/width/height...) not the property of jQuery object? So does the jQuery selector only select DOM Element Node like ? Thank you! 3. List item

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