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• Validation of textarea

  - by Hulk

  How to validate a textarea in a form.i.e, it should not be empty or have any new lines and if so raise an alert <script> function val() { //ifnewline found or blank raise an alert } </script> <form> <textarea name = "pt_text" rows = "8" cols = "8" class = "input" WRAP ></textarea> <input type=""button" onclick="val();" </form> Thanks

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• Easiest way to split up a large controller file

  - by timpone

  I have a rails controller file that is too large (~900 lines - api_controller). I'd like to just split it up like something like this: api_controller.rb api_controller_item_admin.rb api_controller_web.rb I don't want to split into multiple controllers. What would be the preferred way to do this? Could I just require the new parts at the end? like: require './api_controller_item_admin' require './api_controller_web'

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• Sliding Response after a Point-Square Collision

  - by mars

  In general terms and pseudo-code, what would be the best way to have a collision response of sliding along a wall if the wall is actually just a part of an entire square that a point is colliding into? The collision test method used is a test to see if the point lies in the square. Should I divide the square into four lines and just calculate the shortest distance to the line and then move the point back that distance?If so, then how can I determine which edge of the square the point is closest to after collision?

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• Some questions about working with Haml

  - by damian

  I am trying to use Haml with Grails but I am having some issues. The plugin for haml has errors to parse empty lines. The plugin generate gsp files, so I think that I can use the online haml html generator. Bug I want something like an editor with syntax highlithing, blocks, etc, and that generate html. Is there something like this? Or only the editor? thanks in advance

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• [mysql] how to find a value in the row?

  - by www.yegorov-p.ru

  Hello. I have pretty big table with lots of columns. I want to find all lines, with some word in it. Sure, i can write something like SELECT * FROM table WHERE 'blablabla' IN col1 OR 'blablabla' IN col2 OR ... But I think it's not the best solution =))

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• Purpose of getters and setters? [closed]

  - by wrongusername

  Possible Duplicates: Public Data members vs Getters, Setters Purpose of private members in a class What is the use of getters and setters when you can just make your variables public and avoid the hassle of such lines as A.setVariableX(A.getVariableY())?

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• matplotlib - write TeX on Qt form

  - by race1

  I'd like to add some TeX text to my Qt form, like label - just text, no graph, no lines, no borders, just TeX. I thought something like this: render TeX to bitmap and then place that bitmap on form, e.g. into QLabel. Or even better - use some backend, add it to form and use something tex_label.print_tex(<tex code>). Seems matplotplot has TeX parsers, but I can't figure out how to use them... Thanks.

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• How to remove commas etc from a matrix in python

  - by robert

  say ive got a matrix that looks like: [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] how can i make it on seperate lines: [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] and then remove commas etc: 0 0 0 0 0 And also to make it blank instead of 0's, so that numbers can be put in later, so in the end it will be like: _ 1 2 _ 1 _ 1 (spaces not underscores) thanks

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• c# slider control but - music studio style

  - by jskaggz

  Hi folks, I'm about to implement a slider control component in .net that's along the lines of a music recording control. With the timebased eq graph, and with the abilities of a regular slider. Anyone have suggestions on how to go about this?

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• .NET MVC Code Generation

  - by Josh

  Is there a way to force the MVC automatically generated code to follow the conventions you have set in your preferences? For example, I keep all curly braces on the same lines as their declaring class, method, etc, but when generating a controller, it completely disregards my settings. Is there a setting someplace to force the same code generation as other parts of project?

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• How do I format a String in an email so Outlook will print the line breaks?

  - by MattGrommes

  I'm trying to send an email in Java but when I read the body of the email in Outlook, it's gotten rid of all my linebreaks. I'm putting \n at the ends of the lines but is there something special I need to do other than that? The receivers are always going to be using Outlook. I found a page on microsoft.com that says there's a 'Remove line breaks' "feature" in Outlook so does this mean there's no solution to get around that other than un-checking that setting? Thanks

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• uint8 Error on Only Device Compile

  - by paul simmons

  In an iPhone app, when I compile for simulator everything is OK. However, when I compile for device, I get error on lines where I declare uint8 variables. How is that possible?

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• UITextView - preserving carriage returns on COPY

  - by user280556

  Hello Everyone, When I try to copy text from a UITextView to say an Email message to compose and send, the carriage returns (new lines) of the text disappear and the text connects up into one LARGE paragraph. I am not sure why this is happening. How do I fix this? Thanks

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• How do I create directory if doesn't exist to create file?

  - by RoboShop

  i have a piece of code here that breaks if the directory doesn't exist System.IO.File.WriteAllText(filePath, content); is it possible to do in one line (or a few lines) to check the directory leading to the new file doesn't exist and if not, to create it before creating the new file. i'm in .NET 3.5 here.

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• Best way to do text processing in linux/mac ?

  - by euphoria83

  I generally need to do a fair amount of text processing for my research, such as removing the last token from all lines, extracting the first 2 tokens from each line, splitting each line into tokens, etc. What is the best way to perform this ? Should I learn Perl for this? Or should I learn some kind of shell commands? The main concern is speed. If I need to write long code for such stuff, it defeats the purpose.

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• Python equivalent of C++ getline()

  - by Arnab Sen Gupta

  In C++ we can enter multiple lines by giving our own choice of delimiting character in the getline() function.. however I am not able to do the same in Python!! it has only raw_input() and sys.stdin.readline() methods that read till I press enter. Is there any way to customize this so that I can specify my own delimiter?

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• latex computer output segments

  - by Flavius

  I have a verbatim environment containing computer output as text. This text is sematically made of two sections, each section being separated from the other by an empty line. The number of sections and their content is known, so I don't need to parse the text, but the line between the sections is very important (as it gives semantics to the "text"). Each segment is made of multiple lines. How could I write (1) and (2) on the left handside at the centre of each segment?

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• How To Store Files In An EXE C#

  - by S3THST4

  Alright, so I'm working on programming my own installer in C#, and what I'd like to do is something along the lines of put the files in the .exe, so I can do File.Copy(file, filedir); Or, if this isn't possible, is there another way of doing what I am attempting to do? Thank you in advance. ~Seth

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• How to match end-of-line multiple times in a regex without interpolation

  - by harschware

  Hi, if I have a input with new lines in it like: [INFO] xyz [INFO] How can I pull out the xyz part. I tried a pattern like /^\[INFO\]$(.*?)$\[INFO\]/ms, but perl gives me: Use of uninitialized value $\ in regexp compilation at scripts\t.pl line 6. I've been trying things to get interpolation to stop like using qr// but alas, no love.

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• How to import your own non-packaged Java classes in Jython

  - by thepandaatemyface

  I know in Jython you can do import java.util.Random as Random Random().nextInt() But if I have a class I wrote myself, how can I import it into Jython without putting the class itself in a package? If I have a testclass Test: public class Test { public void foo() { System.out.println("bar"); } } that's not inside a package. Can I even import that into jython by using something along the lines offrom Test import Test?

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• problems with cut (unix)

  - by lego69

  hello everybody, I've got strange problem with cut I wrote script, there I have row: ... | cut -d" " -f3,4 >! out cut recieves this data (I checked it with echo) James James 033333333 0 0.00 but I recieve empty lines in out, can somebody explain why?

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• From mod_rewrite to isapi_rewrite

  - by Ty

  Hi, I have a Modx htaccess file which needs to be rewritten from mod_rewrite to isapi_rewrite 2. Can someone please help me? The following lines need to be changed for isapi_rewrite 2: Options +FollowSymlinks RewriteEngine On RewriteBase / RewriteCond %{HTTP_USER_AGENT} ^.internal\ dummy\ connection.$ [NC] RewriteRule .* - [F,L] RewriteRule ^(manager|assets) - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?q=$1 [L,QSA] Many thanks.

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• Methodology for a Rails app

  - by Aaron Vegh

  I'm undertaking a rather large conversion from a legacy database-driven Windows app to a Rails app. Because of the large number of forms and database tables involved, I want to make sure I've got the right methodology before getting too far. My chief concern is minimizing the amount of code I have to write. There are many models that interact together, and I want to make sure I'm using them correctly. Here's a simplified set of models: class Patient < ActiveRecord::Base has_many :PatientAddresses has_many :PatientFileStatuses end class PatientAddress < ActiveRecord::Base belongs_to :Patient end class PatientFileStatus < ActiveRecord::Base belongs_to :Patient end The controller determines if there's a Patient selected; everything else is based on that. In the view, I will be needing data from each of these models. But it seems like I have to write an instance variable in my controller for every attribute that I want to use. So I start writing code like this: @patient = Patient.find(session[:patient]) @patient_addresses = @patient.PatientAddresses @patient_file_statuses = @patient.PatientFileStatuses @enrollment_received_when = @patient_file_statuses[0].EnrollmentReceivedWhen @consent_received = @patient_file_statuses[0].ConsentReceived @consent_received_when = @patient_file_statuses[0].ConsentReceivedWhen The first three lines grab the Patient model and its relations. The next three lines are examples of my providing values to the view from one of those relations. The view has a combination of text fields and select fields to show the data above. For example: <%= select("patientfilestatus", "ConsentReceived", {"val1"="val1", "val2"="val2", "Written"="Written"}, :include_blank=true )% <%= calendar_date_select_tag "patient_file_statuses[EnrollmentReceivedWhen]", @enrollment_complete_when, :popup=:force % (BTW, the select tag isn't really working; I think I have to use collection_select?) My questions are: Do I have to manually declare the value of every instance variable in the controller, or can/should I do it within the view? What is the proper technique for displaying a select tag for data that's not the primary model? When I go to save changes to this form, will I have to manually pick out the attributes for each model and save them individually? Or is there a way to name the fields such that ActiveRecord does the right thing? Thanks in advance, Aaron.

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• Converting C source to C++

  - by Barry Kelly

  How would you go about converting a reasonably large (300K), fairly mature C codebase to C++? The kind of C I have in mind is split into files roughly corresponding to modules (i.e. less granular than a typical OO class-based decomposition), using internal linkage in lieu private functions and data, and external linkage for public functions and data. Global variables are used extensively for communication between the modules. There is a very extensive integration test suite available, but no unit (i.e. module) level tests. I have in mind a general strategy: Compile everything in C++'s C subset and get that working. Convert modules into huge classes, so that all the cross-references are scoped by a class name, but leaving all functions and data as static members, and get that working. Convert huge classes into instances with appropriate constructors and initialized cross-references; replace static member accesses with indirect accesses as appropriate; and get that working. Now, approach the project as an ill-factored OO application, and write unit tests where dependencies are tractable, and decompose into separate classes where they are not; the goal here would be to move from one working program to another at each transformation. Obviously, this would be quite a bit of work. Are there any case studies / war stories out there on this kind of translation? Alternative strategies? Other useful advice? Note 1: the program is a compiler, and probably millions of other programs rely on its behaviour not changing, so wholesale rewriting is pretty much not an option. Note 2: the source is nearly 20 years old, and has perhaps 30% code churn (lines modified + added / previous total lines) per year. It is heavily maintained and extended, in other words. Thus, one of the goals would be to increase mantainability. [For the sake of the question, assume that translation into C++ is mandatory, and that leaving it in C is not an option. The point of adding this condition is to weed out the "leave it in C" answers.]

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• Get string value from http response with Mechanize

  - by Gearóid

  Hi, I'm currently integrating facebook into my current app and I've succeeded in retrieving the access_token using the following code: url="#{url}?#{client_id}&#{client_secret}&#{code}&#{redirect_uri}&type=client_cred" agent = Mechanize.new page = agent.get(url) The page object above has a body which contains text something along the lines of access_token=XXXXX I just want to pull out the access_token value. I can get the entire string simply by writing: page.body But I was wondering is there a way to get the access_token value without resorting to regular expressions etc? Thanks.

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