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Articles indexed Thursday April 8 2010

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  • How do I retrieve the zero-based index of the selected option in a select box?

    - by Ben McCormack
    Let's say I have the following in my HTML code: <select name="Currency" id="Currency"> <option value="0.85">Euro</option> <option value="110.33">Japanese Yen</option> <option value="1.2">Canadian Dollars</option> </select> Using jQuery, I can use $("#Currency").val() to give me the selectd value, and I can use $("#Currency :selected").text() to get the selected text. What do I need to do to get the zero-based index (in this case, 0, 1, or 2) of the current selection?

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  • jquery click event not working on first click,

    - by kumar
    $("#table").click(function(e) { var row = jQuery(e.target || e.srcElement).parent(); $('#tabletr').bind('click', show); name= row.att("id"); }); I am not getting the id value very first time i click on the row? second time I am getting fine? can anyone tell me why its happening like this?

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  • How can I determine if an object or reference has a valid string coercion?

    - by Ether
    I've run into a situation (while logging various data changes) where I need to determine if a reference has a valid string coercion (e.g. can properly be printed into a log or stored in a database). There isn't anything in Scalar::Util to do this, so I have cobbled together something using other methods in that library: use strict; use warnings; use Scalar::Util qw(reftype refaddr); sub has_string_coercion { my $value = shift; my $as_string = "$value"; my $ref = ref $value; my $reftype = reftype $value; my $refaddr = sprintf "0x%x", refaddr $value; if ($ref eq $reftype) { # base-type references stringify as REF(0xADDR) return $as_string !~ /^${ref}\(${refaddr}\)$/; } else { # blessed objects stringify as REF=REFTYPE(0xADDR) return $as_string !~ /^${ref}=${reftype}\(${refaddr}\)$/; } } # Example: use DateTime; my $ref1 = DateTime->now; my $ref2 = \'foo'; print "DateTime has coercion: " . has_string_coercion($ref1) . "\n\n"; print "scalar ref has coercion: " . has_string_coercion($ref2) . "\n"; However, I suspect there might be a better way of determining this by inspecting the guts of the variable in some way. How can this be done better?

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  • Inheritance mapping with Fluent NHibernate

    - by Berryl
    Below is an example of how I currently use automapping overrides to set up a my db representation of inheritance. It gets the job done functionality wise BUT by using some internal default values. For example, the discriminator column name winds up being the literal value 'discriminator' instead of "ActivityType, and the discriminator values are the fully qualified type of each class, instead of "ACCOUNT" and "PROJECT". I am guessing that this is a bug that doesn't get much attention now that conventions are preferred, and that the convention approach works correctly. I am looking for a sample of usage. Cheers, Berryl public class ActivityBaseMap : IAutoMappingOverride<ActivityBase> { public void Override(AutoMapping<ActivityBase> mapping) { ... mapping.DiscriminateSubClassesOnColumn("ActivityType"); } } public class AccountingActivityMap : SubclassMap<AccountingActivity> { public AccountingActivityMap() { ... DiscriminatorValue("ACCOUNT"); } } public class ProjectActivityMap : SubclassMap<ProjectActivity> { public ProjectActivityMap() { ... DiscriminatorValue("PROJECT"); } }

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  • Really fast C++ html parser

    - by Alessandro
    Hello to all, I'm doing a html text feature extractor in C++; the program need to be REALLY fast: i need to extract a this features in ms per html page and the memory usage needs to be good and finally unicode encoding well be nice. I know how difficult is to have all of this things, but i want a parser close to these things at least. Somebody have a suggestion?

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  • javascript location.hash refreshing in IE

    - by aepheus
    I need to modify the hash, remove it after certain processing takes place so that if the user refreshes they do not cause the process to run again. This works fine in FF, but it seems that IE is reloading every time I try to change the hash. I think it is related to other things that are loading on the page, though I am not certain. I have an iframe that loads (related to the process) as well as some scripts that are still being fetched in the parent window. I can't seem to figure out a good way to change the hash after all the loading completes. And, at the same time am not even positive that it is related to the loading. Any ideas on how to solve this?

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  • What would be the best way to dynamically add a set of rows to a table using JQuery?

    - by user312157
    I have a following table using MVC that shows number of items the user has. <table border = "1" id="tblItems"> <% var itemnum = 1; foreach (var item in Model.Items) {%> <tr> <td colspan="2" bgcolor="Silver"><strong>Item#<%=itemnum%></strong></td> <td><%=Html.ActionLink("Delete", "DeleteItem", "Item", new { id = item.ID })%></td> </tr> <tr> <td><strong>Name:</strong></td> <td><%=Html.TextBox("ItemName_" + itemnum, item.Name)%></td> </tr> <tr> <td><strong>Description:</strong></td> <td><%=Html.TextBox("ItemDescription_" + itemnum, item.Description)%></td> </tr> <%itemnum++; } %> </table> I will have a button that will Add New Item that will dynamically add identical structure. Any ideas on what is the best way to do this using JQuery? Thanks for all the suggestions!

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  • How can I run a user script before any inline scripts run on a webpage?

    - by Telanor
    I want to make a greasemonkey type script for firefox that runs before the scripts on the page. Greasemonkey scripts run after scripts on the page, so that won't work. The reason I need this is because I want to edit one of the scripts on the page. Specifically, I want to delete a script that forces the page to load inside a frame since having the page inside a frame breaks F5 (Pressing F5 makes the page jump back to the front page instead of reloading the current page). Also, I don't want to load the page through a proxy with AJAX and switching to chrome/opera is not an option either. I was thinking maybe the Jetpack add-on would work but it seems to only have the same event that greasemonkey uses, DOMContentLoaded. Any ideas?

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  • Methods in Ruby: objects or not?

    - by Mladen Jablanovic
    Inspired by this discussion, after some googling I wasn't able to find an answer to a pretty simple question regarding methods in Ruby: are they objects or not? There are different opinions here and there, and I would really like to hear, let's say, an in-depth explanation. I'm aware of Object#method method, which takes a method name and returns a Method instance, but, on the other hand, there's a similar thing you can do with blocks to make them into Proc instances, and blocks aren't objects, so what makes methods any different?

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  • Use a stored procedure parameter for unit parameter of DATE_SUB

    - by Mike
    I would like to know if it's possible to pass a parameter to a mysql stored procedure and use this parameter as the unit parameter of the DATE_SUB function. It seems that the unit parameter is a reserved word so I don't know if there's a type for unit. Exemple of what I'm trying to do : DELIMITER $$ DROP PROCEDURE IF EXISTS `test` $$ CREATE DEFINER=`root`@`%` PROCEDURE `test`(param1 unit) BEGIN select DATE_SUB(now(), INTERVAL 1 param1); END $$ DELIMITER ;

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  • VB like with keywords in C#

    - by Tanzim Saqib
    AspectF is an open source utility which offers separation of concerns in fluent way. I am personally a big fan as well as contributor of this project. It is very simple, easy to implement, and an excellent way to incorporate regular everyday logics into your business code from one single class, AspectF. I have added couple of new features to it, which are yet to be committed to the source control. However, here’s one feature that I have introduced today is to be able to write VB-like with keyword...(read more)

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  • synergy-plug is there some kind of log or error control?

    - by ufk
    Hiya. I configured synergy-plus server and client as described in the following url: http://www.engadget.com/2005/08/09/how-to-share-your-keyboard-and-mouse-in-realtime-with-synergy/ I didn't find any info indicating that there is a log file or any error control to see if the client connect correctly. how can i troubleshoot ? Trying to connect between Linux OS and Snow Leopard. this is my server configuration file: (music snow is the snow leopard, tux-in is the linux) section: screens tux-in.local: music-snow: end section: links tux-in.local: right = music-snow music-snow: left = tux-in.local end

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  • Export podcasts from iTunes as OPML, or some other way?

    - by Raftus
    I recently bought a new computer, and installed iTunes 9 on it, mainly to subscribe to podcasts. All my regular podcasts are saved as subscriptions in iTunes om my old computer. Is there any way to save myself entering in all the subscriptions individually on my new computer, by maybe exporting the podcast list as an OPML file, or otherwise saving that list out of iTunes?

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  • Connecting to ItsHidden in Ubuntu 9.10 problems

    - by Ionel Bratianu
    I try to setup a VPN connection to ItsHidden on Ubuntu 9.10. I double-checked my credentials in the VPN configuration, but I don't think that this is problem. In my syslog I got these messages: Jan 11 14:38:46 NetworkManager: Starting VPN service 'org.freedesktop.NetworkManager.pptp'... Jan 11 14:38:46 NetworkManager: VPN service 'org.freedesktop.NetworkManager.pptp' started (org.freedesktop.NetworkManager.pptp), PID 4502 Jan 11 14:38:46 NetworkManager: VPN service 'org.freedesktop.NetworkManager.pptp' just appeared, activating connections Jan 11 14:38:46 NetworkManager: VPN plugin state changed: 1 Jan 11 14:38:46 NetworkManager: VPN plugin state changed: 3 Jan 11 14:38:46 pppd[4506]: Plugin /usr/lib/pppd/2.4.5//nm-pptp-pppd-plugin.so loaded. Jan 11 14:38:46 NetworkManager: VPN connection 'ItsHidden' (Connect) reply received. Jan 11 14:38:46 pppd[4506]: pppd 2.4.5 started by root, uid 0 Jan 11 14:38:46 pppd[4506]: Using interface ppp0 Jan 11 14:38:46 NetworkManager: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Jan 11 14:38:46 NetworkManager: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found. Jan 11 14:38:46 pppd[4506]: Connect: ppp0 /dev/pts/1 Jan 11 14:39:06 pptp[4508]: nm-pptp-service-4502 fatal[get_ip_address:pptp.c:430]: gethostbyname 'vpn.itshidden.com': HOST NOT FOUND Jan 11 14:39:06 pppd[4506]: Modem hangup Jan 11 14:39:06 pppd[4506]: Connection terminated. Jan 11 14:39:06 NetworkManager: VPN plugin failed: 1 Jan 11 14:39:06 NetworkManager: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Jan 11 14:39:06 pppd[4506]: Exit. Jan 11 14:39:06 NetworkManager: VPN plugin failed: 1 Jan 11 14:39:06 NetworkManager: VPN plugin failed: 1 Jan 11 14:39:06 NetworkManager: VPN plugin state changed: 6 Jan 11 14:39:06 NetworkManager: VPN plugin state change reason: 0 Jan 11 14:39:06 NetworkManager: connection_state_changed(): Could not process the request because no VPN connection was active. Jan 11 14:39:06 NetworkManager: Policy set 'Auto eth0' (eth0) as default for routing and DNS. Jan 11 14:39:19 NetworkManager: [1263213559.003098] ensure_killed(): waiting for vpn service pid 4502 to exit Jan 11 14:39:19 NetworkManager: [1263213559.003289] ensure_killed(): vpn service pid 4502 cleaned up Because the gethostbyname is failing, I suppose that the NetworkManager doesn't know that I use proxies for accessing Internet. I'm not sure that this is the real problem. Could you tell me a solution to make gesthostbyname not failing anymore?

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  • Best VPN Server

    - by eavar
    I don't like the standard vpn server on windows for some reason and I'm searching for the best client/server application in order to create a Virtual Private Network. I don't care if the application has it's own technology.

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  • git merge should ignore one directory

    - by dorelal
    I have tons of data in directory called reports. While doing git merge with another branch I am getting lots of conflicts for files under reports directory. I would like git merge to ignore files under reports. In another words I would like all the data from reports from master and not from lab branch. Is that possible? This is what I am doing right now. git checkout master git merge lab

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  • How to set an array to a list of values in VB.NET?

    - by IPX Ares
    I cannot figure out how to set an array to one of two sets of numbers (there will be more later), every way that I have tried throws some kind of error. I have tried to Dim the array inside the case statements, but then I cannot use the array in the For Each, which makes this worthless.... any ideas would be appreciated. Code: Dim HourArray() As Integer Select Case CurrentShapeRow(ROW_PERIOD) Case "ON", "2X16" HourArray = {6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21} Case "2X8", "5X8" HourArray = {0, 1, 2, 3, 4, 5, 22, 23} Case Else Throw New Exception(String.Format("Unhandled Period: {0}", CurrentShapeRow(ROW_PERIOD))) End Select For Each HourCount As Integer In HourArray() 'DO SOME STUFF HERE Next

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  • Why javascript IF only works one time?

    - by Emily
    I have javascript code which copy the value of input file and past it in the text box in real time. <script> function copyit(){ var thephoto=document.getElementById('thephoto').value; var fileonchange=document.getElementById('fileonchange').value; if(!thephoto==fileonchange){ document.getElementById('fileonchange').value=thephoto; } } window.setInterval("copyit()", 500); </script> Choose File : <input type="file" id="thephoto"><br> Here Is the file name : <input type="text" id="fileonchange"> Sadly this only works one time and then stops pasting the value when changing the file again. ( i mean you should reload the page to works again) Is IF has a cache or something? you can try the code by yourself to see. Thank you all

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  • In Scala 2.8 collections, why was the Traversable type added above Iterable?

    - by Seth Tisue
    I know that to be Traversable, you need only have a foreach method. Iterable requires an iterator method. Both the Scala 2.8 collections SID and the "Fighting Bitrot with Types" paper are basically silent on the subject of why Traversable was added. The SID only says "David McIver... proposed Traversable as a generalization of Iterable." I have vaguely gathered from discussions on IRC that it has to do with reclaiming resources when traversal of a collection terminates? The following is probably related to my question. There are some odd-looking function definitions in TraversableLike.scala, for example: def isEmpty: Boolean = { var result = true breakable { for (x <- this) { result = false break } } result } I assume there's a good reason that wasn't just written as: def isEmpty: Boolean = { for (x <- this) return false true }

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