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• Simplest method of hiding sensitive information

  - by drozzy

  What is the simplest way I can hide a sensitive identifier, while providing some equivalent means of identifying the data from outside? For example, lets say I have a database table with records and one of them is an sensitive ID field. ID 2A 1S etc... then I want to have a second record: ID PublicID 2A AXXX44328 1S KKKZJSAAS such that when I am given a PublicID I can always determine what ID it refers to: H(PublicID) = ID but nobody else is able to do so. I suspect this is like, encryption - with throwing away a public key?

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• show() doesn't redraw anymore

  - by Abruzzo Forte e Gentile

  Hi All I am working in linux and I don't know why using python and matplotlib commands draws me only once the chart I want. The first time I call show() the plot is drawn, wihtout any problem, but not the second time and the following. I close the window showing the chart between the two calls. Do you know why and hot to fix it? Thanks AFG from numpy import * from pylab import * data = array( [ 1,2,3,4,5] ) plot(data) [<matplotlib.lines.Line2D object at 0x90c98ac>] show() # this call shows me a plot #..now I close the window... data = array( [ 1,2,3,4,5,6] ) plot(data) [<matplotlib.lines.Line2D object at 0x92dafec>] show() # this one doesn't shows me anything

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• headers already sent displays after moving files from one server to another

  - by PERR0_HUNTER

  hey there! I have a project running on dreamhost hosting and it's working fine, but since DH has been getting really slow I'm moving the project to my new dedicated server. The thing is that after I move all of my file over to the new dedicated (ubuntu 8.4) I get see warnings all over the place telling me that the headers had been already sent. The first thing I tried was moving the files via FTP: download to my machine, upload to server - Didn't worked Second try was tar.gz the folder on the first server and untar it on the new one, didn't worked either I tried chaing enconding to ANSI and they start working, however most of my files contain accents so ANSI is not an option for all my files i need UTF8 Any ideas on how to fix this? I'm sure it must be some sort of config

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• Subquery vs Traditional join with WHERE clause?

  - by BradC

  When joining to a subset of a table, any reason to prefer one of these formats over the other? Subquery version: SELECT ... FROM Customers AS c INNER JOIN (SELECT * FROM Classification WHERE CustomerType = 'Standard') AS cf ON c.TypeCode = cf.Code INNER JOIN SalesReps s ON cf.SalesRepID = s.SalesRepID vs the WHERE clause at the end: SELECT ... FROM Customers AS c INNER JOIN Classification AS cf ON c.TypeCode = cf.Code INNER JOIN SalesReps AS s ON cf.SalesRepID = s.SalesRepID WHERE cf.CustomerType = 'Standard' The WHERE clause at the end feels more "traditional", but the first is arguably more clear, especially as the joins get increasingly complex. Only other reason I can think of to prefer the second is that the "SELECT *" on the first might be returning columns that aren't used later (In this case, I'd probably only need to return cf.Code and Cf.SalesRepID)

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• jQuery slideDown() not animating (jquery-rails 3.0.4; jquery-ui-rails (4.0.5)

  - by Michael Guren

  I am following along in the latest Agile Web Development with Rails 4 book. In Chapter 11 (AJAX), the book instructs us to use the following code in the "create.js.erb" file: if ($('#cart tr').length == 1) { $('#cart').show('blind', 1000); } This code causes the #cart div to jump down without any content. After 1 second it appears. There is no sliding effect. I tried using slideDown(); as well, but the div just appears immediately. Out of curiosity, I tried slideUp(); when the div was visible. Voila. The div slid up. This appears to be a jQuery bug and wondered if anyone else has experienced this, or has any suggestions for me. Thanks.

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• DataSet binding problem

  - by Shaine

  I've got in-memory dataset with some table defined and I populate this table in a following way: for(...) ds.Fields.AddFieldsRow(++j, 0, heading, "Char", "", "", "Input", 0, "","",""); On the GUI I've got DataGridView bound to that table inside TabControl (bound through BindingSource). Very strange thing is happening: if I open tab pane with this grid and populate table with some data then I see changes in grid. On the other side if I'm at other tab, populate table, and then switch to tab with grid I've got following exception: "DataMember property 'Fields' cannot be found on the DataSource". In similar way I've got 2 tab panes with grid in each that are bound to the same datatable using different datasources and I open one of them, populate, see the changes, then switch to second tab and get crash. What am I missing?

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• Check if a GtkEntryCompletion is currently visible

  - by Joe

  I have a GtkEntry with a GtkEntryCompletion attached to it. The Entry does something fairly expensive if the user hasn't changed the text in it for a second (to preview search results). However it's very common for the user to stop typing in order to select the correct autocompletion. So I'd like to delay the preview until the user has stopped typing and the GtkEntryCompletion is not currently suggesting anything. GtkEntryCompletion is not a real widget however, and doesn't seem to have any way to get to whatever widget does own the CellRenderers it uses. Is there a way I can detect if it's visible or not?

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• getting hidden elements

  - by Emin

  Say I have the following unordered list <ul class="container"> <li class="item" style="display: none;">first item</li> <li class="item">second item</li> <li class="item">third item</li> <li class="item">forth item</li> </ul> how can I carry out a task only if all the items in the container are hidden? regards...

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• jquery load function problem

  - by andrew

  Hi, i have a select box like that <select name="sehirler_post" id="sehirler_post"> i am getting values via jquery. i know two different ways to get values. first one is : var sehirler_post = jQuery('select#sehirler_post').attr('value'); second one is: jQuery('#sehirler_post ').val() and finally here is my problem, i have something like this: jQuery("#okay").load("ajax_post_category.php?okay="+id+""); i would like to use selectbox value instead of id (okay="+id+"). so, i must change +id+ part with select box value. however i can not do it.. i tried to do like that: jQuery("#okay").load("ajax_post_category.php?okay="+jQuery('#sehirler_post').val()+""); it did not work. there must be a way, so i can use selectbox value instead of id in my load function. if anyone helps me, ill be so glad. regards

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• Queued WCF Service which processes every X seconds

  - by Jeff Windsor

  I need to create a service which can process queued requests on a configured time interval. For example go to the web and get financial data from a site the requires we limit requests to once per second. I am new to WCF and I am not sure if (1) WCF with MSMQ a proper choice for implementing this? and (2) if so what is the best mechanism for enforcing the interval? a thread wait? a timer (not sure how that would work).

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• Logical Programming Problem

  - by user353060

  Hello, I've been trying to solve this problem for quite sometime but I am having trouble with it. Let's say on a trigger, you receive values. First trigger: You get 1 Second trigger: You get 1, 2 Third trigger: You get 1, 2, 3 So, I store 1. For 2nd trigger, I store 2 since 1 already exist. For 3rd trigger, I store 3 since 1,2 already exist so in total I have stored 1,2,3 As you can see, we can easily check for new values, if old != new. Here's come the problem: Fourth trigger: You get 1, 2, 4 For 4th trigger, I store 1, 2 because it exists but how do I check against 3 and remove 3 from store and check if 4 is new? If you are having problems understanding this, feel free to clarify. Thanks!

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• filter functions problem

  - by Adam

  I'm working on a search component for an app I'm working on and I needed to add some filters to it. I've found an example and got the first filter working fine. Now I'm trying to add a second filter I'm running into problems... In the example I found they use filterFunctions, but I only get an option for filterFunction, why is that? Here's the example code productsCollection.filterFunctions = [ filterByPrice, filterByType, filterByCondition, filterByVendor ] And this is what I'm trying acData.filterFunction = [filterByStatus, filterByDate] but with this code I get the following error message - 1067: Implicit coercion of a value of type Array to an unrelated type Function. Why am I getting this error and how would I go about add multiple filters to my Array Collection? Thanks!

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• Using pthread condition variable with rwlock

  - by Doomsday

  Hello, I'm looking for a way to use pthread rwlock structure with conditions routines in C++. I have two questions: First: How is it possible and if we can't, why ? Second: Why current POSIX pthread have not implemented this behaviour ? To understand my purpose, I explain what will be my use: I've a producer-consumer model dealing with one shared array. The consumer will cond_wait when the array is empty, but rdlock when reading some elems. The producer will wrlock when adding(+signal) or removing elems from the array. The benefit of using rdlock instead of mutex_lock is to improve performance: when using mutex_lock, several readers would block, whereas using rdlock several readers would not block.

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• Does duplicate id's screw up jquery selectors?

  - by Matt

  If I had two divs, both with id="myDiv" Would $("#myDiv").fadeOut(); fade both divs out? Or would it fade only the first/second? Or none at all? How do I change which one it fades out? Note: I know duplicate id's is against standards but I'm using the fancybox modal popup and it duplicates specified content on your page for the content of the popup. If anyone knows a way around this (maybe I'm using fancybox wrong) please let me know.

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• JavaScript eval() with `this`

  - by mojuba

  If I define a JavaScript code snippet in my HTML, like so: <div id=myElem onMyUpdate="alert('Update called for ' + this.id)">... then what is the most elegant way of evaluating it from within JavaScript with this properly assigned? What I came up with so far is something like this: if (elem.hasAttribute('onMyUpdate')) (function () { eval(elem.getAttribute('onMyUpdate')) }).call(elem); which looks terrible (to me), but works. Any better/more elegant alternatives? MDN says there used to be the second argument to eval() for doing just that but it's deprecated now; MDN then suggests to use operator with() instead, which, if you follow the link provided, turns out to be made deprecated by the latest standard. Dead end, in other words. (As a side note, StackOverflow ignores the word this in search terms and thus it may miss relevant answers - is there a way of telling it not to?) Edit: I forgot to mention: no jQuery please, just vanilla JavaScript

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• WPF Custom Navigation Buttons and calling one page from another

  - by Jeff

  I have a window which contains a Frame which references a 'home' page that has buttons on it. When a button is clicked I want another page to show depending on which button was pressed. I attempted to use NavigationService.Navigate('mynextpage.xaml') and that works however, I want to use a customized navigation panel. I call this.ShowsNavigationUI = false; on my 'home' page but the bar still shows. Is there a way to accomplish what I am trying to do? My page with the frame is a window so I do not know how to disable the Navigation bar there where I guess it is coming from. Further testing shows that the ShowsNavigationUI property is false yet the nav bar shows itself in the parent window once there is a second page to go to (showing the 'home' page in the history. TIA

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• Python sqlite3 and concurrency

  - by RexE

  I have a Python program that uses the "threading" module. Once every second, my program starts a new thread that fetches some data from the web, and stores this data to my hard drive. I would like to use sqlite3 to store these results, but I can't get it to work. The issue seems to be about the following line: conn = sqlite3.connect("mydatabase.db") If I put this line of code inside each thread, I get an OperationalError telling me that the database file is locked. I guess this means that another thread has mydatabase.db open through a sqlite3 connection and has locked it. If I put this line of code in the main program and pass the connection object (conn) to each thread, I get a ProgrammingError, saying that SQLite objects created in a thread can only be used in that same thread. Previously I was storing all my results in CSV files, and did not have any of these file-locking issues. Hopefully this will be possible with sqlite. Any ideas?

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• jquery: .attr() fails for child element

  - by user984003

  I'm going crazy staring at this. I need to change the attribute of an element, something which I have done many times before. But it fails. Now I can't even get jquery to show me the attribute that it has. Does it have to do with what is returned by find()? var c = new_photo_div.find('[class = photo]')[0]; alert(c); alert(new_photo_div.attr('class')); alert(c.attr('class')); The first alert correctly identifies the element: Object HTMLImageElement The second alert correctly gives me the class of new_photo_div. The third alert fails. No alert. I think it should say: photo

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• tiled images in swing

  - by sasquatch90

  I have task to prepare two windows with swing. One contains grid of squares, with random numbers in them. In second I need to load pieces of tiled image and then show them in the correct order, forming tiled image. Windows should look like this : http://img535.imageshack.us/img535/3129/lab8a.jpg Okay so how to bite this ? I've used swing only few times to draw some 2d polylines, so basically I just theoretically now what to do. Ok, so window number 1: I start with creating Jframe for the window. Then I do for loop and in it create 16 JLabels with random numbers in them ? How to set margins between each tile and the whole window ? Window number 2 : So I start the same, but instead of loading numbers I add images ? Now, how can I load image from file and then set it as background ?

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• Why can't I open a new window on my jquery ajax callback?

  - by KyleGobel

  to show my problem in a couple examples... THIS WORKS $.post("SomePage.aspx", { name : "value" }, function (data) { alert(data); }, "text"); THIS DOESN'T WORK $.post("SomePage.aspx", { name : "value" }, function (data) { window.open("http://www.google.com"); }, "text"); In the first example, I get alerted with what i'm expecting. In the second example, nothing happens. No window is opened. If I add an alert or something before or after the window.open call, the alert works fine, but the window doesn't open. If I add a window.open completly after the $.post method, the window opens fine (of course this doens't help me at all). I'm wondering why I can't open a window in the callback. What do I have to do to be able to open a window? I'd like to open a window to show some fancy results. Any help is appreciated, thanks.

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• How can I get values from one table to another via similar values?

  - by Andrija

  I have a table called excel that has 3 columns, name, id, and full_name. The name part is the only one I have and I need to fill id and full_name. The other table that contains the data is called tim_pismena and has 2 columns that I need, id and pismeno_name (the actual names are not important, but i'm writing them just for clarity). In pseudooracle code :) the select that gets me the values from the second table would be done something like this: SELECT tp.id, tp.pismeno_name FROM tim_pismena tp WHERE upper(tp.naziv_pismena) LIKE IN upper('%(SELECT ime as FROM excel)%') and when used with an insert, the end result should be something like name id full_name Happy Joe 55 Very fun place Happy Joe, isn't it?

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• Query with multiple IN-statements but without the cartesian product

  - by Janne

  How could I make this kind of query e.g. in MySQL SELECT * FROM Table t WHERE t.a IN (1,2,3) AND t.b IN (4,5,6) AND t.c IN (7,8,9) ... so that the result would contain only the three rows: t.a|t.b|t.c ---+---+--- 1 | 4 | 7 2 | 5 | 8 3 | 6 | 9 The above query of course returns all the combinations of the values in the IN clauses but I would like to get just the ones where the first elements of each tuple match, second elements of each tuple match and so on. Is there any efficient way to do this? By the way is there some common term for this kind of query or concept? I'm having hard time coming up with the question's title because I can't put this into words..

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• How to insert a value based on lookup from another table [SQL]?

  - by Shaitan00

  I need to find a way to do an INSERT INTO table A but one of the values is something that comes from a lookup on table B, allow me to illustrate. I have the 2 following tables: Table A: A1: String A2: Integer value coming from table B A3: More Data Table B: B1: String B2: Integer Value Example row of A: {"Value", 101, MoreData} Example row of B: {"English", 101} Now, I know I need to INSERT the following into A {"Value2", "English", MoreData} but obviously that won't work because it is expecting an Integer in the second column not the word "English", so I need to do a lookup in Table B first. Something like this: INSERT INTO tableA (A1, A2, A3) VALUES ("Value2", SELECT B2 FROM tableB where B1="English", MoreData); Obviously this doesn't work as-is ... Any suggestions?

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• Multi "column" DataGridView C#

  - by Wesley

  I have a DataGridView that's bound to a DataSet. It has columns DateCreated, Weight, DateUsed. Those three columns do not take up much horizontal space on DataGridView that is nearly full screen. Is it possible to have those columns wrap back to the top if the view is wide enough to support a second group of those colums. So across the header it would read DateCreated, Weight, DateUsed, DateCreated, Weight, DateUsed. Then when a row is clicked, only 3 cells would be highlighted, not all six. Is there something that can provide this functionality?

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• How to run Java Web Application from commandLine prompt or any where

  - by soso

  hello, I have created two (java web applcaion ). one acts as a Server , I created ( web service) into. the second acts as client , I created ( Web service client) into . I created them in netBeans, and they run . but now I want to run them out net beans , how I can do this? I want any way to run out netBeans such as command prompt or an where. if you have idia about running (.war) file , please tell me. thanks in advance.

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