mailing list - Page 957

Implementing master-detail with 2 tables in a dataset (wpf)

- by Dani

I've created a dataset that contains 2 tables: Users (userID, UserName, other user details) Emails (Id, UserId, UserEmail) I populate the dataset using 2 DataAdapters (one for each table) I have a listbox, a few textboxes and a grid. listbox gets all the users, the few textboxs displays the user details when picked in the list box (this is easy b/c they are both bound to the same table). the grid should display the selected user's email addresses. How do I do it using binding ? is it possible or should I catch the selection change event and filter the grid "manually" (currently the grid displays all the emails in the tables).

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bash testing a group of directories for existence

- by Jim Jones

Have documents stored in a file system which includes "daily" directories, e.g. 20050610. In a bash script I want to list the files in a months worth of these directories. So I'm running a find command find <path>/200506* -type f >> jun2005.lst. Would like to check that this set of directories is not a null set before executing the find command. However, if I use if[ -d 200506* ] I get a "too many arguements error. How can I get around this?

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Using 'DataKeyNames' on an ASP.NET GridView control, causes exception on DataBind() call

- by azam

Hi I have an ASP.NET 3.5 WebForms application. Using a GridView control and the DataKeyNames attribute <asp:GridView ID="data" runat="server" DataKeyNames="ID"> <Columns> <asp:BoundField DataField="ID" />  If I take out the DataKeyNames="ID" it binds the data. I would really like to try and use DataKeyNames so I don't need to have the ID column in the columns list. Error: DataBinding: 'Nmspace.MyClass' does not contain a property with the name '"ID"'. Please help.

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Secondary keys in a B-tree

- by Phenom

Let's say that there is a file that contains an unsorted list of student information, which includes a student ID number as well as other information. I want to make a program that retrieves student information based on student ID number. In order to make it efficient, I store the student IDs in a B-tree. So when I enter a student ID number, it searches the B-tree to see if its there or not. It also does one more thing. If it finds the student ID number, then it also returns where in the file that student's information is. This is the secondary key. The program uses this information to locate the rest of the student's information and prints it to screen. Can this be done? Is this how a b-tree works?

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How can the number of modifications be changed in the TeamCity success email?

- by Jason Slocomb

I would like to list an arbitrary number of changes rather than the default 10 that are listed now. We have a dev build on checkin where this isn't necessary, but the once daily build that goes out I would like to have all the changes listed for the day. If that is unpossible (range?) than the last n would be fine. I've looked in the .ftl files, specifically common.ftl. It contains the macro for using data from jetbrains.buildServer.notification.impl.ChangesBean to acquire the changes. I am hopeful there is a way to set properties externally that ChangesBean will look at, but I haven't been able to discover anything. Ideas?

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Get a value from hashtable by a part of its key

- by htf

Hi. Say I have a Hashtable<String, Object> with such keys and values: apple => 1 orange => 2 mossberg => 3 I can use the standard get method to get 1 by "apple", but what I want is getting the same value (or a list of values) by a part of the key, for example "ppl". Of course it may yield several results, in this case I want to be able to process each key-value pair. So basically similar to the LIKE '%ppl%' SQL statement, but I don't want to use a (in-memory) database just because I don't want to add unnecessary complexity. What would you recommend?

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building a pairwise matrix in scipy/numpy in Python from dictionaries

- by user248237

I have a dictionary whose keys are strings and values are numpy arrays, e.g.: data = {'a': array([1,2,3]), 'b': array([4,5,6]), 'c': array([7,8,9])} I want to compute a statistic between all pairs of values in 'data' and build an n by x matrix that stores the result. Assume that I know the order of the keys, i.e. I have a list of "labels": labels = ['a', 'b', 'c'] What's the most efficient way to compute this matrix? I can compute the statistic for all pairs like this: result = [] for elt1, elt2 in itertools.product(labels, labels): result.append(compute_statistic(data[elt1], data[elt2])) But I want result to be a n by n matrix, corresponding to "labels" by "labels". How can I record the results as this matrix? thanks.

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How to escape/strip special characters in the LaTeX document?

- by Igor

We implemented the online service where it is possible to generate PDF with predefined structure. User can choose a LaTeX template and then compile it with an appropriate inputs. The question we worry about is the security, that the malicious user was not able to gain shell access through the injection of special instruction into latex document. We need some workaround for this or at least a list of special characters that we should strip from the input data. Preferred language would be PHP, but any suggestions, constructions and links are very welcomed. PS. in few word we're looking form mysql_real_escape_string for LaTeX

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Making animation on sIFR3

- by Tomo

Hello all, Now I'm using sIFR3. It works very nicely. Additionally, I would like to put an effect on sIFR. My idea is that when the page loaded, sIFR(ed) texts change its color. For example, sIFR in list item change color one by one. The purpose is to emphasize the sIFR(ed) texts. Reading the document, I thought Flash filters are not for like this animation. Do you think is it possible to make animation on sIFR ? Thank you for your help.

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JDO Exception in google app engine transaction

- by Mariselvam

I am getting the following exception while trying to use transation in app engine datastore. javax.jdo.JDOUserException: Transaction is still active. You should always close your transactions correctly using commit() or rollback(). FailedObject:org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManager@12bbe6b at org.datanucleus.jdo.JDOPersistenceManager.close(JDOPersistenceManager.java:277) The following is the code snippet I used : List<String> friendIds = getFriends(userId); Date currentDate = new Date(); PersistenceManager manager = pmfInstance.getPersistenceManager(); try { Transaction trans = manager.currentTransaction(); trans.begin(); for(String friendId : friendIds) { User user = manager.getObjectById(User.class, friendId); if(user != null) { user.setRecoCount(user.getRecoCount() + 1); user.setUpdatedDate(currentDate); manager.makePersistent(user); } } trans.commit(); } finally { manager.close(); }

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php foreach as variable

- by user167850

I'd like to use foreach to loop though an array list and add an element to each array. $tom = array('aa','bb','cc'); $sally = array('xx','yy','zz'); $myArrays = array('tom','sally'); foreach($myArrays as $arrayName) { ${$arrayName}[] = 'newElement'; } Is the use of ${$arrayName}[] the best way to do this? Is there another option rather than using curly braces? It currently works but I'm just wondering if there is a better alternative. Thanks

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Is is possible to parse a web page from the client side for a large number of words and if so, how?

- by Technoh

I have a list of keywords, about 25,000 of them. I would like people who add a certain < script tag on their web page to have these keywords transformed into links. What would be the best way to go and achieve this? I have tried the simple javascript approach (an array with lots of elements and regexping/replacing each) and it obviously slows down the browser. I could always process the content server-side if there was a way, from the client, to send the page's content to a cross-domain server script (I'm partial to PHP but it could be anything) but I don't know of any way to do this. Any other working solution is also welcome.

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Newbie question about file formatting in Python

- by user568041

I'm writing a simple program in Python 2.7 using pycURL library to submit file contents to pastebin. Here's the code of the program: #!/usr/bin/env python2 import pycurl, os def send(file): print "Sending file to pastebin...." curl = pycurl.Curl() curl.setopt(pycurl.URL, "http://pastebin.com/api_public.php") curl.setopt(pycurl.POST, True) curl.setopt(pycurl.POSTFIELDS, "paste_code=%s" % file) curl.setopt(pycurl.NOPROGRESS, True) curl.perform() def main(): content = raw_input("Provide the FULL path to the file: ") open = file(content, 'r') send(open.readlines()) return 0 main() The output pastebin looks like standard Python list: ['string\n', 'line of text\n', ...] etc. Is there any way I could format it so it looks better and it's actually human-readable? Also, I would be very happy if someone could tell me how to use multiple data inputs in POSTFIELDS. Pastebin API uses paste_code as its main data input, but it can use optional things like paste_name that sets the name of the upload or paste_private that sets it private.

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CSS Containers and Framing

- by CaffeineAddiction

I am attempting to code a dynamic object for use in an unordered list. I have a mock up of the HTML here: <ul class='Main'> <li class='Node'> Random Name [%] ff:ff:ff:ff:ff:ff [%] [%] [%] [%] [%] temp: 72 °F Sens1: Off Sens2: Off Sens3: Off Sens4: Off </li> </ul> and I am attempting to wrangle this HTML into something like: My first problem was that the 3x Outer elements would stack vertically instead of horizontally ... I solved this with the following CSS, but it doesnt feel like the right solution: ul { list-style-type: none; padding:0; margin:0; } .Node { } .Node_Light { height:6em; width:2em; position:absolute; border-style:solid; border-width:1px; } .Node_Control { height:6em; width:15em; position:absolute; left:2.55em; border-style:solid; border-width:1px; } .Node_Data { height:6em; width:6em; position:absolute; left:17.6em; border-style:solid; border-width:1px; } One thought was to use a table, but I dont think that is the correct solution either. Ideas? I would like to have the content dynamically resize on page resize and am not opposed to doing it all via JavaScript, but I have a feeling it would be more efficient to do it via CSS ... I just dont know where to begin.

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UITable row to add an item

- by Moshe

I want to make a TableView of phrases which the user can edit. The "Phrase editor" is being displayed modally. My top left is for the Done button right now. I'm considering making a button at the end of the table for "new phrase". How would I implement that? Is it a good idea to follow the "contacts" application and make a + button in the top right, or Should I make the "Add Items" button at the end of the list? What are HIG implications of either one? BONUS: Where can I find some tutorials on Navigation Controllers and Table Views? Thanks a ton.

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Hibernate / MySQL Bulk insert problem

- by Marty Pitt

I'm having trouble getting Hibernate to perform a bulk insert on MySQL. I'm using Hibernate 3.3 and MySQL 5.1 At a high level, this is what's happening: @Transactional public Set<Long> doUpdate(Project project, IRepository externalSource) { List<IEntity> entities = externalSource.loadEntites(); buildEntities(entities, project); persistEntities(project); } public void persistEntities(Project project) { projectDAO.update(project); } This results in n log entries (1 for every row) as follows: Hibernate: insert into ProjectEntity (name, parent_id, path, project_id, state, type) values (?, ?, ?, ?, ?, ?) I'd like to see this get batched, so the update is more performant. It's possible that this routine could result in tens-of-thousands of rows generated, and a db trip per row is a killer. Why isn't this getting batched? (It's my understanding that batch inserts are supposed to be default where appropriate by hibernate).

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Regex to replace 'li' with 'option' without losing class and id attributes

- by Earthman Web

I am looking for a solution using preg_replace or similar method to change: <li id="id1" class="authorlist" /> <li id="id2" class="authorlist" /> <li id="id3" class="authorlist" /> to <option id="id1" class="authorlist" /> <option id="id2" class="authorlist" /> <option id="id3" class="authorlist" /> I think I have the pattern correct, but not sure how to do the replacement part... Here is the (wordpress) php code: $string = wp_list_authors( $args ); //returns list as noted above $pattern = '<li ([^>]*)'; $replacement = '?????'; echo preg_replace($pattern, $replacement, $string); Suggestions, please?

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speed up calling lot of entities, and getting unique values, google app engine python

- by user291071

OK this is a 2 part question, I've seen and searched for several methods to get a list of unique values for a class and haven't been practically happy with any method so far. So anyone have a simple example code of getting unique values for instance for this code. Here is my super slow example. class LinkRating2(db.Model): user = db.StringProperty() link = db.StringProperty() rating2 = db.FloatProperty() def uniqueLinkGet(tabl): start = time.time() dic = {} query = tabl.all() for obj in query: dic[obj.link]=1 end = time.time() print end-start return dic My second question is calling for instance an iterator instead of fetch slower? Is there a faster method to do this code below? Especially if the number of elements called be larger than 1000? query = LinkRating2.all() link1 = 'some random string' a = query.filter('link = ', link1) adic ={} for itema in a: adic[itema.user]=itema.rating2

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Remove objects from different environments

- by Fred

I have an R script file that executes a second R script via: source("../scripts/second_file.R") That second file has the following lines: myfiles <- list.files(".",pattern = "*.csv") ... rm(myfiles) When I run the master R file I get: > source("../scripts/second_file.R") Error in file.remove(myfiles) : object 'myfiles' not found and the program aborts. I think this has something to do with the environment. I looked at ?rm() pages but less than illuminating. I figure I have to give it a position argument, but not sure which.

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Searching pgadmin db and grabbing information?

- by Bootstrotter

I'm currently trying to write a script in RoR to go into my PGAdmin database and look at a list of users, THEN ignore users that have an image path but look at users who don't have one and then upload a link of a generic photo into their row. My database looks Something like this: id integer | name | email | image path | 12 Bob [email protected] www.faces.org 81 Sally [email protected] 114 Mark [email protected] www.faces.org How would I start grabbing those users, I only have 103 users right now, but I also need to think about scaling for the future. Here is a starting point. I know this is kind of vague but really all I need is just a starting point. to get into it. Thanks for the information. require 'sqlite3' db = SQlite3 users = users.find([1, 103]) Any help would be great.

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JQuery UI Tabs + Wordpress issues

- by Sahat

Hello dear Stackoverflow gurus, I am trying to integrate JQuery tabs with my WordPress blog, to replace old HTML Navigation menu. I am half way there but not quiet... Take a look for yourself: http://www.isahat.com The template breaks right away since the first button of the Tab menu is linked to index.php like so: Home Info The second tab menu shows my Info page just fine, but on top of everything else. My home page and everything else gets shifted down to make room for Info page. And why after clicking on any article or even the tab link, my tab menu disappears and all my navigation links turn into a bullet list? Thank you, Sahat.

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Add database to plesk domain account via XML

- by Ryan French

Hi All, I'm currently working on trying to integrate a site with Plesk via the XML API and I've run into a bit of an issue. I've managed to get most things working but I'm trying to add a database to a domain and I keep getting an error. When creating the database I extract a list of Domain Accounts associated with the current clients account, and use the domain guid that is returned in the XML to try and create the new database, but Plesk is returning an error stating that the id I am using is not a valid id. I've looked at the documentation and it is saying that the domain ID that I should be sending is an integer, but the only ID I can find for the domain is the guid, which is a string. Anyone done anything like this before and know where I can get the ID from?

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EntityDataSource Unable to configure to Entity Model

- by photo_tom

I'm doing my first test asp.net3.5 app using EntityDataSource. I've got the basic project built and the Entity model created and compiled. Database is a local sqlexpress one in app_data directory. When I put the <asp:EntityDataSource /> control on the page and try to configure it, I'm getting the message "The list of named connections could not be loaded because the configuration could not be opened". At this point, everything in the project is "auto-created" by Visual Studio 2008sp1. I confused as I cannot find any information on how to correct from this message.

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String Functions in IIS Url Rewrite Module

- by Nariman

The IIS URL Rewrite Module ships with 3 built-in functions: * ToLower - returns the input string converted to lower case. * UrlEncode - returns the input string converted to URL-encoded format. This function can be used if the substitution URL in rewrite rule contains special characters (for example non-ASCII or URI-unsafe characters). * UrlDecode - decodes the URL-encoded input string. This function can be used to decode a condition input before matching it against a pattern. The functions can be invoked by using the following syntax: {function_name:any_string} The question is: can this list be extended by introducing a Replace function that's available for changing values within a rewrite rule action or condition? Another way to frame the question: is there any way to do a global replace on a URL coming in using this module? It seems that you're limited to using regular expressions and back-references to construct strings, without a search/replace functionality to replace every X with Y in {REQUEST_URI} before issuing a redirect.

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Conceptually, how does replay work in a game?

- by SnOrfus

I was kind of curious as to how replay might be implemented in a game. Initially, I thought that there would be just a command list of every player/ai action that was taken in the game, and it then 're-plays' the game and lets the engine render as usual. However, I have looked at replays in FPS/RTS games, and upon careful inspection even things like the particles and graphical/audible glitches are consistent (and those glitches are generally *in*consistent). So How does this happen. In fixed camera angle games I though it might just write every frame of the whole scene to a stream that gets stored and then just replays the stream back, but that doesn't seem like enough for games that allow you to pause and move the camera around. You'd have to store the locations of everything in the scene at all points in time (No?). So for things like particles, that's a lot of data to push which seems like a significant draw on the game's performance whilst playing.

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