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• Variable number of arguments in VB

  - by Kratz

  How to create a function with variable number of arguments in visual basic? ex. x = Sum(1,2,3) y = Sum(1,2) Function Sum('how to declare argument here') 'Is there any special argument manipulation inside function before it is usable? End Function

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• where does main() return its value?

  - by piemesons

  I'm newly using CODE::BLOCKS+mingw compiler If I don't type return 0 at the end of program,I can see that main() is returning some integer,I learnt that main() returning 0 infers program executes successfully.I don't find any flaw in my code, why is it returning some integer? secondly any function returns its value to its function call, to where does main() return its value?

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• Respond_with not working Rails 3

  - by MDM

  As no one can help me with my UJS ajax problem I am trying "respond_with", but I am getting this error: RuntimeError (In order to use respond_with, first you need to declare the formats your controller responds to in the class level) Yet I have declared it in my controller: class HomepagesController < ApplicationController respond_to :html, :xml, :js def index @homepages = Homepage.search(params[:search]) respond_with(@homepages) end Anyone has any ideas why.

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• stick button to bottom of element

  - by dzona

  Is there any way to stick child button element to bottom of parent element when number of child elements vary? Parent element is fixed height, and could be scrolled vertically in case of child overflow. In that case, button should be at the end of child list, but in case there is no children, or children size don't push parent element to overflow, it should be at bottom of parent element. Is there pure css solution for this? Thanks

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• MySQL: group by and IF statement

  - by notset

  By default, parent_id = 0. I want to select all records with parent_id = 0 and only the last ones with parent_id 0. I tried this, but it didn't work: SELECT * FROM `articles` IF `parent_id` > 0 THEN GROUP BY `parent_id` HAVING COUNT(`parent_id`) >= 1 END; ORDER BY `time` DESC What could be the solution?

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• Calling to_xml on an Array of ROXML objects results in an empty collection

  - by findchris

  Hi there. I have a ROXML object that looks like: class Activity include ROXML xml_accessor :id end If I have an array of these objects and call .to_xml on the array, I receive an empty xml collection: "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<activities type=\"array\">\n</activities>\n" Any idea why or how to fix this? I'm running Rails 2.3.5 with the newest version of ROXML. Thanks

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• Why is the PrintDialog not displaying (in 64 bit)?

  - by Bill

  This code, when built in .Net for Any CPU platform and running on a 64-bit machine, simply returns a DialogResult of Cancel without showing the expected dialog box. Dim dlg As New System.Windows.Forms.PrintDialog If dlg.ShowDialog() = Windows.Forms.DialogResult.OK Then '... print the document ' End If However, it works fine when the application is built for the x86 platform, and run on a 64-bit machine. How can you display the dialog with a 64-bit compile?

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• About presenter pattern in rails. is a better way to do it?

  - by Totty

  I have in my model: def presenter @presenter ||= ProfilePresenter.new(self) @presenter end The ProfilePresenter is a class that has methods like, get_link(), get_img_url(size), get_sex(), get_relationship_status() and other methods that have not to do with the model, not even with the controller but is used multiple times in the view. So now i use them by doing this: Profile.presenter.get_link # or Profile.presenter.get_img_url('thumb') # returns the path of the image. is not used to make a db query

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• technology for new webproject?

  - by elCapitano

  Hi there, i am planing to set up a new webproject which has to use a database and a model which can be presented in a browser. I looked at a lot of technologies (JSF, PHP, ..) but i could not find a free and easy framework/technology for me (in the end i prefered asp.net, but this is not free). What can you recommend me for a new webproject from scratch?

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• TSQL, Rename column of a returning table in user Function

  - by user1433660

  I have defined function which returns table with 2 columns. Can I rename these columns so that resulting table would be like: Press name | Sum of pages ? CREATE FUNCTION F_3 (@press nvarchar(255)) RETURNS @table TABLE ( Press nvarchar(255), PagesSum int ) AS BEGIN INSERT @table SELECT @press, SUM(Books.Pages) FROM Books, Press WHERE Press.Name = @press AND Books.Id_Press = Press.Id GROUP BY Press.Name RETURN END GO SELECT * FROM F_3('BHV') GO I've tried to do it like Press AS 'Press name' nvarchar(255) but that won't work.

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• rspec nested ( has many resource ) no route found error

  - by Surya

  My calendar resource is a nested resource under profile map.resources :profiles, :has_many=>[:calendar] I am trying to write a rspec spec for calendarcontroller it "should use supplied date" do get :show , :month = '09' , :year = '2010' end But i get an error stating No route matches {:month="09", :year="2010", :controller="calendar", :action="show"} Any idea how i could get around this ?

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• EndOfStreamException caused by spammer (c#/asp.net)

  - by maxp

  I have a contact page on my site that seems to have been latched on to by a spammer. The error itself is: System.IO.EndOfStreamException: Unable to read beyond the end of the stream. at System.IO.BinaryReader.ReadByte() at System.Web.UI.ObjectStateFormatter.DeserializeIndexedString(SerializerBinaryReader reader, Byte token) at System.Web.UI.ObjectStateFormatter.DeserializeValue(SerializerBinaryReader reader) Google turns up little. I assume they are submitting an invalid viewstate, but the exception has no line number so im stumped.

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• How can I extract a range of lines from a text file on unix?

  - by Adam J. Forster

  I have a ~23000 line sql dump containing several databases worth of data. I need to extract a certain section of this file (i.e. the data for a single database) and place it in a new file. I know both the start and end line numbers of the data that I want. Does anyone know a unix command (or series of commands) to extract all lines from a file between say line 16224 and 16482 and then redirect them into a new file?

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• difference between cn.execute and rs.update?

  - by every_answer_gets_a_point

  i am connecting to mysql from excel using odbc. the following illustrates how i am updating the rs With rs .AddNew ' create a new record ' add values to each field in the record .Fields("datapath") = dpath .Fields("analysistime") = atime .Fields("reporttime") = rtime .Fields("lastcalib") = lcalib .Fields("analystname") = aname .Fields("reportname") = rname .Fields("batchstate") = "bstate" .Fields("instrument") = "NA" .Update ' stores the new record End With the question is why is there a need to run cn.execute after this? havent i already updated the rs with rs.update?

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• How to create an after_save callback on runtime

  - by dorelal

  I am using ruby on rails 2.3.5 . I have user instance. On run time depending on certain conditions I want to add an after_save callback just for this instance. The other issue is that this after_save should take a block or a proc as parameter. What I want is something like this. This is psuedo code. user = User.first proc = Proc.new do puts 'this is foo' end user.after_save proc

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• Should the function or the caller be resonsible for input validation?

  - by haudenschilt

  I'm doing a security audit on a fairly large php application and was wondering where I should include my user-input validation. Should I validate the data, then send the clean data off to the back-end functions or should I rely on each function to do it's own validation? Or even both? Is there any standard or best-practice for this sort of thing? Currently the app does both inconsistently and I'll like to make things more consistent.

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• SQL Syntax for testing objects before creating views & functions

  - by Scott Weinstein

  I'm trying to figure out the syntax for creating a view (or function) but only if a dependent CLR assembly exits. I've tried both IF EXISTS (SELECT name FROM sys.assemblies WHERE name = 'MyCLRAssembly') begin create view dbo.MyView as select GETDATE() as C1 end and IF EXISTS (SELECT name FROM sys.assemblies WHERE name = 'MyCLRAssembly') create view dbo.MyView as select GETDATE() as C1 go Neither work. I get Msg 156, Level 15, State 1, Line 2 Incorrect syntax near the keyword 'view'. How can this be done?

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• Is it possible to start (and stop) a thread inside a DLL?

  - by Jerry Dodge

  I'm pondering some ideas for building a DLL for some common stuff I do. One thing I'd like to check if it's possible is running a thread inside of a DLL. I'm sure I would be able to at least start it, and have it automatically free on terminate (and make it forcefully terminate its self) - that I can see wouldn't be much of a problem. But once I start it, I don't see how I can continue communicating with it (especially to stop it) mainly because each call to the DLL is unique (as far as my knowledge tells me) but I also know very little of the subject. I've seen how in some occasions, a DLL can be loaded at the beginning and released at the end when it's not needed anymore. I have 0 knowledge or experience with this method, other than just seeing something related to it, couldn't even tell you what or how, I don't remember. But is this even possible? I know about ActiveX/COM but that is not what I want - I'd like just a basic DLL that can be used across languages (specifically C#). Also, if it is possible, then how would I go about doing callbacks from the DLL to the app? For example, when I start the thread, I most probably will assign a function (which is inside the EXE) to be the handler for the events (which are triggered from the DLL). So I guess what I'm asking is - how to load a DLL for continuous work and release it when I'm done - as opposed to the simple method of calling individual functions in the DLL as needed. In the same case - I might assign variables or create objects inside the DLL. How can I assure that once I assign that variable (or create the object), how can I make sure that variable or object will still be available the next time I call the DLL? Obviously it would require a mechanism to Initialize/Finalize the DLL (I.E. create the objects inside the DLL when the DLL is loaded, and free the objects when the DLL is unloaded). EDIT: In the end, I will wrap the DLL inside of a component, so when an instance of the component is created, DLL will be loaded and a corresponding thread will be created inside the DLL, then when the component is free'd, the DLL is unloaded. Also need to make sure that if there are for example 2 of these components, that there will be 2 instances of the DLL loaded for each component. Is this in any way related to the use of an IInterface? Because I also have 0 experience with this. No need to answer it directly with sample source code - a link to a good tutorial would be great.

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• Python: Sending a variable to another script.

  - by Grenko

  I'm new to python and kind of been chucked in the deep end at work. If i had a script which has creates a list such as below: test = 'string' l = [] for i in test: l.append(i) print l How would i send that this to another python script?

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• How do I deploy applications in run as administrator mode?

  - by John

  Hello, How Do I deploy applications so that they require administrator rights without the end-user doing that by hand? I use Delphi 2009 to build the application.

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• How can I iterate through all of the Models in my rails app?

  - by James

  I would like to be able to iterate over and inspect all the models in my rails app. In pseudo-code it would look something like: rails_env.models.each do |model| associations = model.reflect_on_all_associations(:has_many) ... do some stuff end My question is how do I inspect my rails app to get a collection of the models (rails_env.models) ?

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• Replace character between strings

  - by trembon

  Maybe it's just too late for me to do this, but I'm trying to replace a character between 2 string with regex in PHP. Example string: other | text [tag]text|more text|and more[/tag] end | text My goal is to replace | with <br/> between [tag] and [/tag]. Tried with this, seems it wasn't that easy though: /<td>(\|)<td>/gsi Searched a bit, but couldn't make out an answer with the stuff I found. Hope you can help, thanks

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• How do I make an object a property of a model in Ruby on Rails?

  - by iTake

  I have this in my schema: create_table "robots_matches", :force => true do |t| t.integer "robot_id" t.integer "match_id" and I think I want to be able to load a robot and match from within my robots_match model so I can do something like this: robots_match.find(:id).get_robot().Name My attempt in the robots_matches model was this: def get_robot Robot.find(this.id) end I am super new to rails, so feel free to correct my architectural decision here.

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• Declare Ajax-webservicecall OnSuccess method anonymous.

  - by user333113

  I write a lot of ajax javascript code and have a little design problem which I'm not totally satisfied with. A lot of times I end up with writing something like this: var typeOfPopup; function RetrievePopupContent(_typeOfPopup) { switch (_typeOfPopup) { case Popup1: WebService.RetrievePopup1Content(param1, param2, DisplayPopup, OnError); break; case Popup2: WebService.RetrievePopup2Content(param1, param2, DisplayPopup, OnError); break; } typeOfPopup = _typeOfPopup; } function DisplayPopup(result) { switch (typeOfPopup) { case Popup1: $get('Popup1').innerHTML = result; break; case Popup2: $get('Popup2').innerHTML = result; break; } Allright. This is a simplified example of what I mean. Often I end up with a lot worse code I believe. What I don't like is the global state variabel outside the functions. One solution I wasn't thinking about when writing this code is to send a context object. I believe you could write something like this: function RetrievePopupContent(typeOfPopup) { switch (typeOfPopup) { case Popup1: WebService.RetrievePopup1Content(param1, param2, DisplayPopup, OnError, typeOfPopup); break; case Popup2: WebService.RetrievePopup2Content(param1, param2, DisplayPopup, OnError, typeOfPopup); break; } } function DisplayPopup(result, typeOfPopup) { switch (typeOfPopup) { case Popup1: $get('Popup1').innerHTML = result; break; case Popup2: $get('Popup2').innerHTML = result; break; } Is this the recommended way? What I also want to do is to be able to write something like this: function RetrievePopupContent(typeOfPopup) { switch (typeOfPopup) { case Popup1: WebService.RetrievePopup1Content(param1, param2, new function(result) { $get('Popup1').innerHTML = result; }, OnError); break; case Popup2: WebService.RetrievePopup2Content(param1, param2, new function(result) { $get('Popup2').innerHTML = result; }, OnError); break; } } Is this possible at all? To declare the callback function anonymous? I am grateful for all opinions on the two options I mentioned myself and also new alternatives to get rid of my global variables I have used this way.

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• Does Ruby have a special stack for return value?

  - by prosseek

  The following Ruby code def a(b,c) b+c end is the same as follows with Python def a(b,c): return b+c It looks like that ruby has the special stack that stores the final evaluation result and returns the value when a function is called. If so, what's the name of the stack, and how can I get that stack? If not, how does the Ruby code work without returning something?

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