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  • Choosing a design pattern for a class that might change it's internal attributes

    - by the_drow
    I have a class that holds arbitrary state and it's defined like this: class AbstractFoo { }; template <class StatePolicy> class Foo : public StatePolicy, public AbstractFoo { }; The state policy contains only protected attributes that represent the state. The state might be the same for multiple behaviors and they can be replaced at runtime. All Foo objects have the same interface to abstract the state itself and to enable storing Foo objects in containers. I would like to find the least verbose and the most maintainable way to express this.

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  • Java Archtecture Decision !!

    - by santiagobasulto
    Hi everybody! I'm developing a medium Java app, and i'm facing a small problem due to my lack of expirience. I've a custom DAO, which gets "Article" objects from the DataBase. I've the Article class, and the DAO has a method called getArticle(int id), this method returns an Article. The Article has a Category object, and i'm using lazy loading. So, when i request for an Article Category (Article a = new Article(); a.getCategory();) the Article class gets the Category from the DAO and then returns it. I'm now thinking to cache it, so when i request multiple times to an Article's category, the database is only queried one time. My question is: where should i put that cache? I can put it on the Article class (in the DTO), or i can put it on the DAO class. What do you say? Thanks!

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  • Multithreaded FTP upload. Is it possible?

    - by Arty
    I need to upload multiple files from directory to the server via FTP and SFTP. I've solved this task for SFTP with python, paramiko and threading. But I have problem with doing it for FTP. I tried to use ftplib for python, but it seems that it doesn't support threading and I upload all files one by one, which is very slow. I'm wondering is it even possible to do multithreading uploads with FTP protocol without creating separate connections/authorizations (it takes too long)? Solution can be on Python or PHP. Maybe CURL? Would be grateful for any ideas.

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  • How to Create VBA Add-In with Shared Codes for All Excels?

    - by StanFish
    I'm writing VBA codes for multiple Excel spreadsheets, which will be shared with others from time to time. At some point I find there are lots of duplications in my works. So I want to find a way to share codes in a sort of Excel add-in, like the .xla file. But when I tried to save the Excel file containing shared codes as .xla file, I got some problems: The file cannot be edit anymore after I save it in the default add-in folder If I move the .xls file to a folder other than the add-in folder, and open it directly - I cannot use its classes - which creates problems for sharing the codes Any ideas to create add-ins in a flexible and powerful way please? Thanks a lot for the help

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  • Joining tables from 2 different connection strings

    - by krio
    Hello, I need to join two tables from different MySQL (PHP) connection strings and different databases. $conn = mysql_connect('192.168.30.20', 'user', 'pass'); $conn2 = mysql_connect('anotherIPHere', 'user2', 'pass2'); $db = mysql_select_db('1stdb', $conn); $db2 = mysql_select_db('2nddb', $conn2); If I were using the same connection I would just prefix the tables with the db names, such as database1.table1.column and database2.table2.column2, but since I'm using two completely separate connection strings the MySQL Query does not know which connection string to use, thus the resource is not usable. I've read a ton of resources that show how to use two databases, from the SAME connection string and that is working fine, but I can't find anything related to multiple connection strings and databases. Thanks

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  • What port is my SQL2008 instance running on?

    - by George
    Check out this pic of my SQL 2008 Management Configuration screen for TCP: I need to know what port I am running on. Base on this previous post, I don't believe that it is 1433, which I guess is the default. When I check my port number in SQL Config Mgr., it is blank. Does this suggest a default port? Note that I have multiple SQL Server instance on the db server. 1 2000 instance and two 2008 instances. I want to know the port of the 2008b instance. Can you help?

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  • Modules and custom routes

    - by Dennis Haarbrink
    I'm building a website using Zend Framework and having trouble implementing modules and custom routes. There are basically two rules: Select a module based on the domain (multiple domains can select a single module) Regardless of domain, select one specific module based on path Examples: domain1.com selects module domain1 domain1.net selects module domain1 domain2.com selects module domain2 both domain1.com/admin and domain2.com/admin select module admin This is the first project where I use ZF, so my experience with the framework is basically non-existent. I have done some dirty hacking in my bootstrapper where I check the domain and than execute Zend_Layout::startMVC() to get the correct layout, but that is messed up when I'm implementing custom routes. So I was wondering what is the best way to go about implementing this?

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  • Include headers in header file?

    - by Mohit Deshpande
    I have several libraries made by myself (a geometry library, a linked list library, etc). I want to make a header file to include them all in one lib.h. Could I do something like this: #ifndef LIB_H_ #define LIB_H_ #include <stdio.h> #include <stdlib.h> #include <linkedlist.h> #include <geometry.h> .... #endif Then I could just reference this one library and actually reference multiple libraries. Is this possible? If not, is there a way around it?

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  • AVD Failed to Load ~ Failed to Parse Properties ~ Mac OSX

    - by C.D. OKeefe
    I'm going to say upfront, please forgive me. I'm a newbie to android development and fairly new to programming. Also on a Mac. You're going to have to talk...real...slow. I can't get an AVD to load. I've tried it from Eclipse and from the Android SDK Manager. Failed multiple times. Received the same error each time, "Failed to parse properties from Users/myname/.android/avd/nameIGaveEmulator/config.ini." I've the forum here and saw that others have had similar problems, but of the answers given, no one came back to say if they worked, and I don't see anyone with a similar problem on a Mac. If the path needs to be "changed" what exactly does that mean and how do I go about doing so?

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  • documentation for a package in php?

    - by ajsie
    so in a folder PayPal i've got multiple classes for using their API. i want to make a documentation for how to use all the classes in a sequential way. so here is my questions: how do i create a package for them? cause above each class i used phpdoc tag @package PayPal. is a package in php just a folder? where do i put documentation for the package? there are best practices for this? a file in the folder named ...? how to put class- or package-specific examples, eg. step 1 bla bla, step 2 bla bla? thanks!

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  • How to send date from one view to another in xcode?

    - by Egor Sosin
    I want to make the program where you have to enter some data, and then it will manipulate that data and show it on the other view when you click done. I search through multiple tutorials, but still cant understand how you do that. I have a textfield - lesson1 and want to pass it to the label in the second view. The views are called EditClasses and DayView. Thanks a lot. Also I need to change the data every 24 hours, what is the best way to do it?

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  • PHP - Too many mysql_query("SELECT .. ") .. ?

    - by Mike
    Hey, I'm making an e-shop and to display the tree of categories and all the products with their multiple variations of prices I made like more than 150 mysql_query("SELECT ..."); queries on one page. (If I count the "while" loops). Is it too many, and if yes, can it have any negative effect? (ofc. it takes longer to load the data ..) Also can I anyhow achieve the effect of this code without doing it that way? $result2 = mysql_query("SELECT * FROM ceny WHERE produkt_id='$id' ORDER BY gramaz"); $result3 = mysql_query("SELECT * FROM ceny WHERE produkt_id='$id' ORDER BY gramaz"); $result4 = mysql_query("SELECT * FROM ceny WHERE produkt_id='$id' ORDER BY gramaz"); $result5 = mysql_query("SELECT * FROM ceny WHERE produkt_id='$id' ORDER BY gramaz"); while( $row2 = mysql_fetch_array( $result2 )) { } while( $row3 = mysql_fetch_array( $result2 )) { } while( $row4 = mysql_fetch_array( $result2 )) { } while( $row5 = mysql_fetch_array( $result2 )) { } Thanks, Mike.

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  • Compare TinyMCE and CKeditor for a Wiki

    - by Lakshman Prasad
    For a custom wiki django-wakawaka, i want to be able to add a WYSIWYG support. TinyMCE is obviously the most popular plugin, used even by Wordpress. But CK-editor seems more feature full. Those who have used either of these or both, which is better and why. Are there some better packages, that I am missing? Is there something that I am missing when I conclude CKeditor is better, by going through them (because it is not as widely used). I want to use it with django and jquery, with multiple instances of WYSIWYG widget per page. Does one offer advantage over the other.

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  • Storing object as a column in LINQ

    - by Alex
    Hello, i have some class which constructs itself from string, like this: CurrencyVector v = new CurrencyVector("10 WMR / 20 WMZ"); it's actually a class which holds multiple currency values, but it does not matter much. I need to change type of column in my LINQ table (in vs 2010 designer) from String to that class, CurrencyVector. If i do it - i get runtime error when LINQ runtime tries to cast String as CurrencyVector (when populating the table from database). Adding IConvertible did not help. I wrapped these columns in properties, but it's ugly and slow solution. Searching internet gave no results.

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  • Parsing and validating arbitrary date formats in ruby (on rails)

    - by Matt Briggs
    I have a requirement to handle custom date formats in an existing app. The idea is that the users have to do with multiple formats from outside sources they have very little control over. We will need to be able to take the format and both validate Dates against it, as well as parse strings specifically in that format. The other thing is that these can be completely arbitrary, like JA == January, FE == February, etc... to my understanding, chronic only handles parsing (and does it in a more magical way then I can use), and enter code here DateTime#strptime comes close, but doesn't really handle the whole two character month scenario, even with custom formatters. The 'nuclear' option is to write in custom support for edge cases like this, but I would prefer to use a library if something like this exists.

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  • Javascript: Passing large objects or strings between function considered a bad practice

    - by Mr. Smee
    Is it considered a bad practice to pass around a large string or object (lets say from an ajax response) between functions? Would it be beneficial in any way save the response in a variable and keep reusing that variable? So in the code it would be something like this: var response; $.post(url, function(resp){ response = resp; }) function doSomething() { // do something with the response here } vs $.post(url, function(resp){ doSomething(resp); }) function doSomething(resp) { // do something with the resp here } Assume resp is a large object or string and it can be passed around between multiple functions.

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  • Possible to set filter on subform from parent form before subform data loads

    - by tbone
    I have frmParentForm with multiple controls used to build a filter for frmSubForm. On frmParentForm_Load, I am doing (simplified example): Me.sbfInvoice_List.Form.filter = "[created_on] >= #" & Me.RecentOrderDateCutoff & "#" Me.sbfInvoice_List.Form.FilterOn = True The problem is, on initial load, it seems the subform load is occurring first, so the entire table is loaded. Is there a way (in a different event perhaps) to properly set the subform filter from the parent form so it is applied before the subform does its initial data load? (The subform can exist on its own, or as a child of many different parent forms (sometimes filtered, sometimes not), so I'd rather not put some complicated hack in the subform itself to accomplish this.)

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  • Best Application for storing code snippets

    - by Konrad
    Hi all, Just wondering if you can point me in the direction of a simple, fast program which stores code snippets. I have been using a local wiki up to now, but I find it a little annoying at times. Ideally I would like this application to be portable - i.e. it could run off of a USB stick on multiple machines with no installation. What do you guys use? EDIT: I would prefer a solution that was decoupled from the IDE and stored locally, not in the cloud. EDIT 2: Thanks for all the replies thus far, but I am still awaiting a non cloud / web based portable solution. Anyone else care to weigh in? :)

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  • C# - Rollback SqlTransaction in catch block - Problem with object accessability

    - by Marks
    Hi there. I've got a problem, and all articles or examples i found seem to not care about it. I want to do some database actions in a transaction. What i want to do is very similar to most examples: using (SqlConnection Conn = new SqlConnection(_ConnectionString)) { try { Conn.Open(); SqlTransaction Trans = Conn.BeginTransaction(); using (SqlCommand Com = new SqlCommand(ComText, Conn)) { /* DB work */ } } catch (Exception Ex) { Trans.Rollback(); return -1; } } But the problem is, that the SqlTransaction Trans is declared inside the try block. So it is not accessable in the catch() block. Most examples just do Conn.Open() and Conn.BeginTransaction() before the try block. But i think thats a bit risky, since both can throw multiple exceptions. Am I wrong, or do most people just ignore this risk? Whats the best solution to be able to rollback, if an exception happens. Thanks in advance, Marks

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  • Git is ignoring .git directories in subdirectories

    - by Danny
    I'm using git as a backup tool and 'roaming profile' for my $HOME directory between laptop and desktop. My problem is that under my $HOME I have a Development directory with multiple git projects I'm working on. Git will not allow me to add the subdirectories .git folders. So to commit to these projects I have to push the changes into my $HOME git repo, pull on laptop (where they were created and .git dir exsits) and commit. I've read about submodules, but it's not really what I want. I just want the children .git folders to be treated like any old directory so I can move them around and back them up. Has anyone done this or have an idea how I would?

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  • Why won't the debugger update?

    - by Tanner
    Hello everyone, Ive had this problem multiple times and it ruins my projects, I make some changes, like say I have a button in the top left corner of the form and move it to the top right corner, then I press debug but nothing happens to the form, it doesn't change the button is still in the top left-hand corner instead of the top right, and it also doesn't except any new code, its like it saved the project right there and won't move on. Does any one know why or had this problem before? Please, Help!!!! Additional Details: Compiler: Microsoft Visual C# 2008 Express Edition I once fixed this problem by rebuilding the solution, but its never worked again.

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  • How to duplicate "title" <a> as a "alt" of "img". using regex, manually?

    - by jitendra
    How to add title of link as a alt of img. using regex and in dreamweaver. I have to do in a large document. and in multiple files Before <a title="Whatever is written here" href="#" target="_blank"> <img width="14" height="14" src="#" /></a> after <a title="Whatever is written here" href="#" target="_blank"> <img width="14" height="14" src="#" alt="Whatever is written here" /></a>

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  • Fully custom validation error message with Rails

    - by marcgg
    Using Rails I'm trying to get an error message like "The song field can't be empty" on save. Doing the following: validates_presence_of :song_rep_xyz, :message => "can't be empty" ... only displays "Song Rep XYW can't be empty", which is not good because the title of the field is not user friendly. How can I change the title of the field itself ? I could change the actual name of the field in the database, but I have multiple "song" fields and I do need to have specific field names. I don't want to hack around rails' validation process and I feel there should be a way of fixing that.

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  • Dynamically get image URL from Imgur page link

    - by Jleagle
    I am trying to put some images on my website that are hosted on Imgur but i only have the link to the Imgur page, not the actual image URL. For example, on this album the URL I am trying to get is this: http://i.imgur.com/csb9Q.jpg (I only need the first image) I have noticed that when the page only has one image, the image file name is the same as the URL address, for example: http://imgur.com/sYlGa & http://i.imgur.com/sYlGa.jpg So this isnt a problem. But for pages with multiple images, this is not the case so how can i get the image URL?

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  • How can I create numbered map markers in Google Maps V3?

    - by kaneuniversal
    I'm working on a map that has multiple markers on it. These markers use a custom icon, but I'd also like to add numbers on top. I've seen how this has been accomplished using older versions of the API. How can I do this in V3? *Note -- the "title" attribute creates a tooltip when you mouseover the marker, but I want something that will be layered on top of the custom image even when you're not hovering on top of it. Here's the documentation for the marker class, and none of these attributes seem to help: http://code.google.com/apis/maps/documentation/v3/reference.html#MarkerOptions Thank you . . . . Michael

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