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• SQL - Counting sets of Field-B values for each Field-A value

  - by potrnd

  Hello, First of all sorry that I could not think of a more descriptive title. What I want to do is the following using only SQL: I have some lists of strings, list1, list2 and list3. I have a dataset that contains two interesting columns, A and B. Column A contains a TransactionID and column B contains an ItemID. Naturally, there can be multiple rows that share the same TransactionIDs. I need to catch those transactions that have at least one ItemID in each and every list (list1 AND list2 AND list3). I also need to count how many times does that happen for each transaction. [EDIT] That is, count how many full sets of ItemIDs there are for each TransactionID", "Full Set" being any element of the list1 with any element of the list2 with any element of the list3 I hope that makes enough sense, perhaps I will be able to explain it better with a clear head. Thanks in advance

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• Requirements of an issue/bug tracker

  - by James Brooks

  I've been looking at various issue/bug trackers available on the net. There are some very good ones, but I'm unable to use them as my server does not support Perl/Ruby (for example), I'm not too bothered however because I am able to write code in PHP and as such would prefer something in that language. So I've taken it upon myself to write a custom issue tracker system. As of now it's in early planning stages, and before I continue, I'd like to find out what people need from such an application. My current list of things to add include: Creating/Editing/Deleting issues - both on user and admin level Related issues (similar to that of STO) Admins will be able to create builds/milestones and version control of projects Admins will be able to assign users/groups to a project Roadmap of projects Possible SVN integration with Git? What do you think? There are a couple more things I'd like to add, but I'm sure you'll think of a better way of adding such feature. What would you like to see from an issue tracker?

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• Whats the best way to stop this app crash when buttons rapidly pressed iphone obj-c

  - by dubbeat

  Hi, I'm not entirely sure why this crash is happening and I'd like to get advice on the best way to deal with it. My app has 3 buttons. Each button requests a different XML file from a server which is used to populate a table view. If I rapidly press the buttons in sequence , button 1 button 2 button3 button 1 button 2 button3 button 1 button 2 button3 the application quits. What could be causing this. Would id be in the NSURLRequest side of things or the table view population side? How would you suggest I stop this behaviour? I was going to just set a boolean "isRequesting" to true when a button is pressed and set it to false when the table view is finished populating. If any button is pressed while isRequesting is True they do nothing. Does that sound wise or is there a better way? Thanks, dub

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• How to use Visual Studio debugger visualizers built against a different framework version?

  - by michielvoo

  I compiled the ExpressionTreeVisualizer project found in the Visual Studio 2010 samples but when I try to use it in a .NET 3.5 project I get the exception below: Could not load file or assembly 'file:///C:\Program Files (x86)\Microsoft\Visual Studio 2010\Common7\Packages\Debugger\Visualizers\ExpressionTreeVisualizer.dll' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded. The sample project had the TargetFrameworkVersion set to v4.0 and after changing it to v3.5 and building it now works in my project. I changed the source code and project file and rebuilt it so that I now have two expression tree visualizers, one for v3.5 projects and one for v4.0 projects. Is there a better way? Thanks!

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• Reliable way to get the "ancestor" of an object with a specific classname, using jQuery

  - by Matt Dawdy

  I've got a javascript function that gets called on change event of a select form element. So, the "this" variable in js refers to the select element. This select element is in a td tag, in a tr tag. The tr tag has a classname of "FilterDetailsRow". Now, I've tested, and if I use this syntax: var filterRow = $(this).parent().parent(); it gets me what I want. However, is there a better way to tell jQuery, "starting with "this" can you please go up my tree of parents until you find one with a classname of "FilterDetailsRow"? Here's what I came up with, but I want to make sure I"m not reinventing the wheel. function GetFilterDetailsRowOfObject(o) { if (o) { if (o.parent()[0].className.indexOf("FilterDetailsRow") != -1) return o; else return GetFilterDetailsRowOfObject(o.parent()); } else { return null; } } Thanks for any advice.

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• Validate a string in a table in SQL Server

  - by Ashish Gupta

  I need to check If a column value (string) in SQL server table starts with a small letter and can only contain '_', '-', numbers and alphabets. I know I can use a SQL server CLR function for that. However, I am trying to implement that validation using a scalar UDF and could make very little here...I can use 'NOT LIKE', but I am not sure how to make sure I validate the string irrespective of the order of characters or in other words write a pattern in SQL for this. Am I better off using a SQL CLR function? Any help will be appreciated.. Thanks in advance

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• How to call regular JS function with params within jQuery ?

  - by Kim

  Is there another way to run a regular JS function with params passed than what I use below ? It seems redundant use a on-the-way function to do this. function regularJSfunc(param1,param2) { // do stuff } $(document).ready(function(){ $('#myId').change(function(){ regularJSfunc('data1','data2'); }); } Using a .bind event seems much better, however I am not sure how to access the params. Note: Example below doesnt work. $(document).ready(function(){ $('#myId').bind('change',{'data1','data2'},regularJSfunc); }

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• Calculate cubic bezier T value where tangent is perpendicular to anchor line.

  - by drawnonward

  Project a cubic bezier p1,p2,p3,p4 onto the line p1,p4. When p2 or p3 does not project onto the line segment between p1 and p4, the curve will bulge out from the anchor points. Is there a way to calculate the T value where the tangent of the curve is perpendicular to the anchor line? This could also be stated as finding the T values where the projected curve is farthest from the center of the line segment p1,p4. When p2 and p3 project onto the line segment, then the solutions are 0 and 1 respectively. Is there an equation for solving the more interesting case? The T value seems to depend only on the distance of the mapped control points from the anchor line segment. I can determine the value by refining guesses, but I am hoping there is a better way.

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• friendly url in categories

  - by ntan

  Hi to all, i am trying to use friendly url for my categories. Example Database cat_id | parent_id | name | url 1 0 cat1 cat1 2 1 cat2 cat2 My approach to do is to pass the parameter cat with url value for example show.php?cat=cat1 and in .htaccess i must rewrite to /cat1 BUT what about when i want to access cat2. I want to rewrite as cat1/cat2 so the parameter is show.php?cat=cat1/cat2 and then parse the value to secure that cat2 belong to cat1. And so on. I am not using MVC so i have to do it on my own. Please if any other solutions is better please advice or suggest me reading Thank in advance.

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• Wrap text around a right-aligned icon?

  - by user246114

  Hi, Is it possible to make a small box (which will be a row element in a list for me) with an icon in the upper right corner, and text wrapped around it? Something like: ------------------------------------------------- | Some text here which may wrap around [icon] | | if it were to get too long, but then fit well | | around the icon in the upper right corner? | ------------------------------------------------- I was going to use this as a row in a list, and the user could click the icon in the upper-right to delete the row. I could use either a <div> or a <table>, I'm not sure which will be better?: <div> <p>The text</p> <img src="close.png" align="upper-right"> </div> Thanks

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• Cross-reference between delphi records

  - by Paul-Jan

  Let's say I have a record TQuaternion and a record TVector. Quaternions have some methods with TVector parameters. On the other hand, TVector supports some operations that have TQuaternion parameters. Knowing that Delphi (Win32) does not allow for forward record declarations, how do I solve this elegantly? Using classes is not really an option here, because I really want to use operator overloading for this rare case where it actually makes good sense. For now I simply moved these particular methods out of the records and into separate functions, the good old-fashioned way. Better suggestions are most welcome.

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• Regex to validate SMTP Responses?

  - by Alix Axel

  I'm writing a regular expression that can interactively validate SMTP responses codes, once the SMTP dialog is completed it should pass the following regex (some parentheses added for better readability): ^(220)(250){3,}(354)(250)(221)$ Or with(out) authentication: ^(220)(250)((334){2}(235))?(250){2,}(354)(250)(221)$ I'm trying to do rewrite the above regexes so that I can interactively check if the dialog is going as expected, otherwise politely send a QUIT command and close the connection saving bandwidth and time, but I'm having a hard time writing an optimal regex. So far I've managed to come up with: ^(220(250(334(235(250(354(250(221)?)?)?){0,})?){0,2})?)?$ Which, besides only matching authenticated connections, has some bugs... For instance, it matches: 220250334235250354250221 220250334334235250354250221 I've also tried the following modification: ^(220(250)?)?((334(235)?){2})?(250(354(250(221)?)?)?){0,}$ This one accepts non-authenticated responses but it fails to match 220250334 and wrongly matches 220250334334235250354250221 (at least 2 250 are needed before the 354 response code). Can someone help me out with this? Thanks in advance.

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• Restfull authentication between two GAE apps.

  - by user259349

  Hello everyone, i am trying to write a restful google app engine application (python) that accepts requests only from another GAE that i wrote. I dont like any of the ways that i thought of to get this done, please advice if you know of something better than: Get SSL setup, and simply add the credentials on the request that my consuming app will send. I dont like it cause SSL will slow things down. Security by obsecurity. Pass a long number by my consuming app that is in Xmod0, where X is a secret number that both applications know. I just,,,, dont like this. Check the HTTP header to see where is the request coming from. This option is the one that i hate the least, not alot of processing, and spoofing an HTTP request is not really worth it, for my application's data. Is there any other clean solution for this?

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• How can I script the deployment of a Visual Studio database project?

  - by Matt

  How can I script the deployment of a Visual Studio database project? I have a DB project in visual studio and I would like to use it in order to deploy on remote machines via a script. I notice that when I 'deploy' from visual studio, it generates a .sql file. I intercepted this file and tried running it from the command line with osql.exe, but I didn't have any success. Should this work, is there a better way to deploy a database programatically from a database project, may be by referencing in another project and calling some method to deploy it?

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• Table with a lot of attributes

  - by Robert

  Hi, I'm planing to build some database project. One of the tables have a lot of attributes. My question is: What is better, to divide the the class into 2 separate tables or put all of them into one table. below is an example create table User { id, name, surname,... show_name, show_photos, ...) or create table User { id, name, surname,... ) create table UserPrivacy {usr_id, show_name, show_photos, ...) The performance i suppose is similar due to i can use index.

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• MS-Access nested DIR - check if a file exists elsewhere whilst looping through a folder

  - by David Carle

  I have used the DIR() command in Microsoft Access 2003 to loop through the files in folder A. This works fine, but I need to check if each file also exists in another location (folder B), and only process the file if it doesn't exist in folder B. The problem is that checking for the file existing in folder B also uses the DIR() function and this then resets or confuses the original one, with the result that no further files are found in folder A. Is there a way to check if a file exists without using DIR? Or, is there a way to have a separate instance of DIR? I suppose I could build a list of the files in folder A into an array and then process the entries in the array, but this seems rather 'clunky' Any suggestions for a better solution? Thanks

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• What are people's opinions vis-a-vis my choice of authorization plugins?

  - by brad

  I'm slowly but surely putting together my first rails app (first web-app of any kind in fact - I'm not really a programmer) and it's time to set up a user registration/login system. The nature of my app is such that each user will be completely separated from each other user (except for admin roles). When users log in they will have their own unique index page looking at only their data which they and no-one else can ever see or edit. However, I may later want to add a role for a user to be able to view and edit several other user's data (e.g. a group of users may want to allow their secretary to access and edit their data but their secretary would not need any data of their own). My plan is to use authlogic to create the login system and declarative authorization to control permissions but before I embark on this fairly major and crucial task I thought I would canvas a few opinions as to whether this combo was appropriate for the tasks I envisage or whether there would be a better/simpler/faster/cheaper/awesomer option.

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• MarkupBuilder using list

  - by tathamr

  I am currently using sql.row("statement") and storing to a list. I then am trying to setup my xml file using MarkupBuilder. Is there a better way than iterating over the list poping off an item and then parsing it to add my different column names and values? What is stored by list entry is ID='X' Period='Yearly' Lengh='test' So the XML would be something similar to: <table name='test'> <row> <column name=ID>X</column> <column name=Period>Yearly</column> <column name=Length>test</column> </row> </table>

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• OCR Web Service

  - by sdfx

  I am searching for an OCR web service (eventually open source, preferably free) that simply receives an image and returns the text of the image in writing. I've looked at tesseract, OCRopus and GOCR but the only open server I could find is WeOCR. Unfortunately the detection rates (at least during my tests) are sub-par and the speed is not much better. Does anyone have any experience with OCR web services? I guess the license of tesseract allows the operation of such a service, are there any out there?

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• Alert on moving to a different page of a grid when user changes contents of textboxes in a Grid

  - by Ashish Gupta

  In a ASP.NET application I have a paging RadGrid which shows up textbox in each row. Outside the grid, there is an OK button to save the content of all the textbox. If user changes text in any one or more of the textbox and without clicking on the "OK" button, tries to move to a different page number (of the grid by clicking on the page number), he should be prompted for confirmation of save or cancel the changes. I am guessing that one can write a Javascript function which would look for any form input control (textbox in my case) and detect changes and If there are changes, would prompt the user. However, I am not sure where I can call this function from? Any suggestion on this or a better way to achieve this would be appreciated. I am using RadGrid but I guess this should be applicable to GridView as well.

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• JLayeredPane versus Container layering

  - by Gili

  JLayeredPane allows one to stack multiple Components on top of one another using JLayeredPane.add(Component, Integer). Components in higher "layers" display on top of Components in lower "layers". Container.add(Component, int) provides a similar mechanism whereby Components with lower indexes display on top of Components with higher indexes. Please note that the first mechanism uses Integer and the second mechanism uses int. Also, one renders high values on top of low ones, and the other does the opposite. Do not mix the two :) My question is: what's the point of using JLayeredPane when Container already provides the same mechanism? Does one layer components better than the another? UPDATE: There is also Container.setComponentZOrder(Component, int) to consider.

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• How to use ctrl-i for an emacs shortcut without breaking tabs

  - by mksuth

  I want to redefine the emacs keyboard shortcut control-i to be "MOVE CURSOR UP" To do this, I added the following line to my .emacs file: (global-set-key (kbd "C-i") 'previous-line) What I then discovered is that the tab key, by default, does whatever is bound to control-i, which is obviously not what I want. So, to restore normal tab behavior, I added this to my .emacs file (global-set-key (kbd "<tab>") 'indent-for-tab-command) This mostly works. BUT, tab no longer works for auto-completing commands in the mini buffer. How can I fix that? Or is there a better way of going about this? Thanks.

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• Can we have ExtJs components inside a Flex driven page

  - by shafi

  Hi, I am working on a page which mainly consists of Charts and Grids. Thought that Flex would be the best fit with some cool effects. But however, I now feel that ExtJs grid looks better than Flex data grid. My question is whether there is any possibility / mechanism to embed Ext JS grid into a Flex page. Lets say my main page has a Flex tab panel. In first tab, I would like to see 'Flex Chart' and in second tab I would want to see 'ExtJS grid'. I would also want to know of any Flex Data grid plugin (if exists), which looks/works just like Ext Js grid. Thanks & Regards Shafi

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• print customized result in prolog

  - by Allan Jiang

  I am working on a simple prolog program. Here is my problem. Say I already have a fact fruit(apple). I want the program take a input like this ?- input([what,is,apple]). and output apple is a fruit and for input like ?-input([is,apple,a,fruit]) instead of default print true or false, I want the program print some better phrase like yes and no Can someone help me with this? My code part is below: input(Text) :- phrase(sentence(S), Text), perform(S). %... sentence(query(Q)) --> query(Q). query(Query) --> ['is', Thing, 'a', Category], { Query =.. [Category, Thing]}. % here it will print true/false, is there a way in prolog to have it print yes/no, %like in other language: if(q){write("yes")}else{write("no")} perform(query(Q)) :- Q.

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• Convert mediawiki to LaTeX syntax

  - by Amit Kumar

  I need to convert mediawiki into LaTeX syntax. The formulas should stay the same, but I need to transform, for example = something = into \chapter{something}. Although this can be obtained with a bit of sed, things get a little dirty with the itemize environment, so I was wondering if a better solution can be produced. Anything that can be useful for this task ? This is the reverse of this question (graciously copied). Pandoc was the answer to that question, but probably not yet for this.

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