Search Results

Search found 17468 results on 699 pages for 'expression design'.

Page 570/699 | < Previous Page | 566 567 568 569 570 571 572 573 574 575 576 577  | Next Page >

• how to retain one million of simultanous TCP connections?

  - by cow

  i am to design a server that needs to serve millions of clients that are simultaneously connected with the server via TCP. the data traffic between the server and the clients may be sparse. so bandwidth issue can be ignored. one important requirement is that whenever the server needs to send data to any client it can use the existing TCP connection instead of opening a new connection toward the client (because client can be behind a firewall). does anybody know how to do it and what hardware/software is needed (at the least cost)? thanks in advance for any suggestion.

  Read the article

• Are there any open-source / free site analytics solutions that are intranet deployable?

  - by Richard Nichols

  There are plenty of statistics/analytics providers for Internet deployed software (e.g. Google Analytics), but I'm looking for an analytics tool to integrate into a LAN/intranet based web application. I'm aware of AWStats, but I'd prefer something with a design similar to Google Analytics, where a Javascript callback can be embedded into the app and call back to an analytics server. This doesn't require any sort of extra application server configuration and access to run. I'm thinking there's nothing available that isn't proprietary / pay-for, but I'd love to be told I'm wrong!

  Read the article

• what is a performance way to 'tree-walking' through my Entity Framework data

  - by Greg

  Hi, I have a Entity Framework design with a few tables that define a "graph". So there can be a large chain of relationships between objects in the few tables via concept of parent/child relationships. What is a performance way to 'tree-walking' through my Entity Framework data? That is I assume I wouldn't want to load the full set of all NODES and RELATIONSHIPS from the database for the purpose of walking the tree, where the end result may only be identifying leaf nodes? Or would this be OK with the way lazy loading may work at the column/parameter level? Else how could I load just the skeleton of the objects and then when needing to refer to any attributes have them lazy load then?

  Read the article

• What's the best way to clear the slate with your team

  - by Jonathan

  I work largely as an architect, and have developed a pretty big enterprise application based on SOA. Turns out my teamleader has been skilling up the indians behind my back even though I've been spending time and effort preparing a formal handover (to describe the design decisions and why). It just breeds lack of trust and sends the wrong message about the value of my work. Now I'm too furious to even talk to anyone. Do I sit in silence for the next 3 weeks waiting for my transfer?

  Read the article

• Direct web URL to PayPal transaction

  - by tags2k

  Having implemented PayPal's Website Payments Standard, I'd like to link to the details view of a transaction from my site's back end - just a simple direct web URL to the PayPal side. I don't know why this is tricky but when I try to get it from being logged in to the PayPal system it seems very obfuscated, in this form: history.paypal.com/uk/cgi-bin/webscr?cmd=_history-details&info=[looks like some kind of GUID]&ptype=4&history_cache=[huge encoded string] I'm guessing it's by design but it's not very helpful if you want a quick way to jump to a transaction's details. I've tried the https://www.paypal.com/vst/id=1234 form (also with co.uk as I am UK-based) recommended on a few sites I saw in my search, but I am told that: The transaction ID in your link is invalid. This happens even when copying the transaction ID directly from PayPal's back-end order listing. Is there a reliable way to directly link to an order / transaction details page in PayPal?

  Read the article

• How to add a php page to Wordpress

  - by rutherford

  I want to create a custom page for my Wordpress blog that will execute my php code in it, whilst remaining a part of the overall site css/theme/design. The php code will make use of 3rd party APIs (so I need to include other php files) How do I accomplish this? N.B. I do not have a specific need to interact with the Wordpress API - apart from including certain other php libs I need I have no other dependencies in the PHP code I want to include in a WP page. So obviously any solution that didn't require learning the WP api would be the best one.

  Read the article

• Is linking a <div> using javascript acceptable?

  - by jhchawk

  I want to link an entire <div>, but CSS2 does not support adding an href to a div (or span for that matter). My solution is to use the onClick property to add a link. Is this acceptable for modern browsers? Example code: <div class="frommage_box" id="about_frommage" onclick="location.href='#';"> <div class="frommage_textbox" id="ft_1"><p>who is Hawk Design?</p></div> My test page is at http://www.designbyhawk.com/pixel. Updated daily. Thanks for the help.

  Read the article

• Rails Multiple Table Inheritance question

  - by Tony

  I am starting to implement an MTI solution and have a basic question. I have 3 physical models - SMSNotifications, EmailNotifications, TwitterNotifications and they are subclasses of notification. At times in my code, I want to say Notifications.find(:all)so that I can get a set of results sorted by their creation time. Then I want to do things based on their subclass. What is the way to write Notifications.find(:all) and have Rails look through the subclass tables and combine the results? Right now Rails still thinks I have a physical Notifications table which goes against my MTI design. I am also considering the possibility that I should be using STI instead. I would probably have 10 empty columns per row but if getting all notifications requires a query for each type of notification, then I feel like this could be a big issue. Thanks!

  Read the article

• How to Sum calulated fields

  - by Nazero Jerry

  I‘d like to ask I question that here that I think would be easy to some people. Ok I have query that return records of two related tables. (One to many) In this query I have about 3 to 4 calculated fields that are based on the fields from the 2 tables. Now I want to have a group by clause for names and sum clause to sum the calculated fields but it ends up in error message saying: “You tried to execute a query that is not part of aggregate function” So I decided to just run the query without the totals *(ie no group by , sum etc,,,) : And then I created another query that totals my previous query. ( i.e. using group by clause for names and sum for calculated fields… no calculation here) This is fine ( I use to do this) but I don’t like having two queries just to get summary total. Is their any other way of doing this in the design view and create only one query?. I would very much appreciate. Thankyou: JM

  Read the article

• Tutorial/resource for implementing VM

  - by zaharpopov

  Hello, I want self-education purpose implement a simple virtual machine for a dynamic language, prefer in C language. Something like the Lua VM, or Parrot, or Python VM, but simpler. Are there any good resources/tutorials on achieving this, apart from looking at code and design documentations of the existing VMs? Thanks in advance for your answers and ideas Edit: why close vote? I don't understand - is this not programming. Please comment if there is specific problem with my question.

  Read the article

• Is wrapping new within the constructor good or bad?

  - by Timothy

  I watched John Resig's Best Practices in JavaScript Library Design presentation; one slide suggested "tweaking" the object constructor so it instantiates itself. function jQuery(str, con) { if (window === this) { return new jQuery(str, con); } // ... } With that, new jQuery("#foo") becomes jQuery("# foo"). I thought it was rather interesting, but I haven't written a constructor like that in my own code. A little later I read a post here on SO. (Sorry, I don't remember which or I'd supply a link. I will update the question if I can find it again.) One of the comments said it was bad practice to hide new from the programmer like that, but didn't go into details. My question is, it the above generally considered good, bad, or indifferent, and why?

  Read the article

• Document Management System - Where to Store Files?

  - by Diego AC

  Hey, stack! I'm on charge of building an ASP.NET MVC Document Management System. It have to be able to do basic document management tasks like adding, editing and searching entries and also perform versioning. Anyways, I'm targeting PDF, Office and many image formats as the file attached to each document entry in the database. My question is: What design guidelines do pros follow when building the storage mechanism? Do they store the document files in the file system? Database? How file uploading is handled? I used to upload the files to a temporal location while the user was editing the data and move it to permanent storage when the user confirmed the entry creation. Is this good? Any suggestions on improvement?

  Read the article

• Faking user interaction on CMS

  - by Leocer

  I'm working with a CMS and need to import data to it using typical html forms. The data itself is in csv files with one page per row. Such is the CMS that importing directly to db isn't possible due to the complexity of the design. It's pretty important that i "fake" usual user interaction because the CMS does a lot of background work that's crucial for the import. Basically, for each row in the csv file, I need to copy a csv column to a html textfield, or select a checkbox, or click a certain button. One major issue is mapping the data in the csv to actions in the CMS. So if one column contains the string 'foobar' is really means "set the firstName dropdown widget to 'foobar'". Is there a tool to automate this? I´ve been looking at AutoHotKey, Selendium, Web-Harvester and many other tools but I'm not convinced they are the correct tools. The main problem is being able to interact with the html pages in a easy way.

  Read the article

• Is it good to continue as MFC developer or good to know .NET as well?

  - by AKN

  Normally people say MFC is little clumsy. It makes UI developement slightly difficult to maintain since it has lot of auto generated code. It has good architecture (doc/view) but is not transparent like Win32 programming to understand how window program works in the background. So with this situation, is it good to extend the exposure on MFC programming or better to switch to .NET since for faster UI design with ease in maintenance. How globally companies are looking into MFC as a technology for UI developments. Are they comfortable in supporting their developers to continue with MFC or looking for changing their development technology.

  Read the article

• Javascriptlibrary more efficient than Rickshaw for realtime visualizations

  - by dan kutz

  I want to visualize data as time-series graphs on mobile devices(tablets) and therefore stumbled upon rickshaw, which is based on D3. First I must say I was a little bit confused when I realized that realtime in web design is defined totally different to realtime in engineering which has fixed(and often very short) timeframes. Anyway my aim is to visualize the data as fast as possible, and on older tablets visualization with rickshaw is quite slow. Can anybody recommend another library, which may be more efficient in rendering? Or is there no way out and I have to go native? regards Dan.

  Read the article

• How to distinguish properties from constants if they both use PascalCasing for naming?

  - by Gishu

  As stated in the framework design guidelines and the WWW in general, the current guideline is to name your constants like this LastTemplateIndex as opposed to LAST_TEMPLATE_INDEX With the PascalCasing approach, how do you differentiate between a Property and a Constant. ErrorCodes.ServerDown is fine. But what about private constants within your class ? I use quite a lot of them for naming magic numbers.. or for expected values in my unit tests and so on. The ALL_CAPS style helps me know that it is a constant . _testApp.SelectTemplate(LAST_TEMPLATE_INDEX); *Disclosure: I have been using the SCREAMING_CAPS style for a while for constants + I find it more readable than squishedTogetherPascalCasedName. It actually STANDS_OUT in a block of text*

  Read the article

• Systematically resolve conflicting styles in css

  - by Frank Michael Kraft

  I have some stylesheets from different sources in my web project. I want to harmonize them. Some styles I need from the one, some from the other. Is there a tool or method how to systematically resolve style conflicts? I tried IE8 developer tool, and yes, it is possible to view conflicts at the level of each element. But I have many elemens, so if I do it element by element I think this takes too long. Theoretically there could be a tool that shows conflicts of two css files at design time?!? I think this would save me a lot of time.

  Read the article

• How to create and update spreadsheet using OLEDB in C#?

  - by vamshi

  HI! all I am creating .xls spreadsheet file using following code using (OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\temp.xls;Extended Properties='Excel 8.0;HDR=Yes'")) { conn.Open(); OleDbCommand cmd = new OleDbCommand("CREATE TABLE [NewSheet] ([Column1] string, [Column2] string)", conn); cmd.ExecuteNonQuery(); } but i am getting an exception at cmd.ExecuteNonQuery(); Exception is: Cannot modify the design of table 'NewSheet'. It is in a read-only database. Please help me to resolve this Thank You

  Read the article

• Poll: Require Semicolons and Forbid Tables?

  - by George Bailey

  There are a few very serious but opinionated and subjective arguments that I know of. Two of them are Whether or not to use semicolons in the event they are optional. There is a vote as here that also includes reasons Whether or not to use tables for non tabular data. There more information here Since the semicolon question arises often in JavaScript and the tables thing in HTML then there are probably many who run into both. I sort of expect a person who is strict with semicolons also to be strict about avoiding tables. I will post four CW answers here to vote on. Please vote what you think is right. If you want to talk about the reasons then please use Semicolons: Do you recommend using semicolons after every statement in JavaScript? Tables: Start your own question under the polls tag and follow the design of the semicolons question.

  Read the article

• How new is @font-face, and what do I need to know before I add it to a website?

  - by DavidR

  I started getting into reading design blogs a little while ago, and it seemed that @font-face got really popular sometime late last year, or something like that, because I was under the impression that it was a new emerging feature of the web. But then I saw that Internet Explorer has had it since IE4 (with some conversion). So is it common to see @font-face online nowadays? Sould I have anything in mind with respect to accessibility, legality, or rendering before I do something like this? I saw that Hulu.com renders fonts with Canvas and a javascript called "cufon."

  Read the article

• Modern Web Development + General question

  - by ritu

  I have been given a nasty wake up a while ago when I discovered that my 10 years of experience was really equivalent of about 4 (got trapped in a big company doing the same thing over and over without realizing it) and is now paying a huge price. Question 1: I did servlets/JSP programming back in the day (2001-2003). Since then there have been libraries like GWT, YUI, etc. Is JSP still the preferred way of building web apps using Java? Question 2: Because I enjoyed what I was doing and needed to pay the bills, I didn't realize that the ground below me has shifted. How do avoid this in the future? My years of C system programming doesn't seem to matter a lot now to the young guys who talk about design patterns.

  Read the article

• Problems crossing the boundary between protected greasemonkey execution space and the unsafeWindow l

  - by Chilly

  Hi guys. Here is my problem: I've registered some callbacks into a Yahoo event driven webpage (betfair.com market views) and am trapping the betsPlaced events with a handler. So far so simple. Next stage is to get the event back into greasemonkey land, and while I know that from greasemoney space you can call unsafeWindow.stuff, there is no reverse operation (by design). So if I want to send the contents of the event over, say, a cometd queue, my carefully set up jquery, greasemonkey, YUI2, betfair environment fails by telling me that unsafeWindow processes cant call GM_ajax stuff. This is obviously safe and sane, but it basically stops me doing what I want to do. Has anyone tried doing this (ignore the cometd stuff, just general ajax calls) and succeeded? I've had a look at pages like this: http://wiki.greasespot.net/0.7.20080121.0%2B_compatibility but it doesnt appear to work for all the calls.

  Read the article

• Paypal Payflow pro library

  - by John Stewart

  I already have an express checkout integrated with my Codeigniter application. Now I want to integrate seamless paypal where I collect the CC information and pass it to Paypal (via backend) and once everything is approved, my application shows that to the user. All this with out ever going to Paypal's website. I know that Paypal gives a bunch of sample code but they have so many different products that advertise to do the same thing. Is there any wrapper library in PHP that I can use for handling all this? What sort of design decision is involved in migrating to such system? Would I need SSL certificates for this?

  Read the article

• Programmatically Detecting Valid Style Properties In Flex

  - by Joshua

  If I want to know if an object has a particular property I can code this: if (SomeObject.hasOwnProperty('xyz')) { // some code } But some styles masquerade as properties at design time such as Button.color... How can I know what style properties are valid at runtime? ie: What is the equivalent of hasOwnProperty for getStyle/setStyle? In other words how can I know if an object HAS A particular style variable... When I write: MyButton.setStyle('qsfgaeWT','-33'); It won't accomplish anything, but it also doesn't error. How can I know programmatically that 'qsfgaeWT' is NOT a valid style of 'Button'??

  Read the article

• building a website

  - by Ant

  Not sure if this is the right place to post this, or if it should be under programmers.stackexchange... Anywho, a couple of my friends run a business and they asked me to build them a public website. It will only be used for information about the company with soe pictures. No transactions will be involved. Right now I work for a company where I build internal websites, and do alot of backend programming in C#. I understand html, css, jquery, etc. so I feel like I am completely capable of building a website for them. However, I do not know all the basic knowledge to building one. For example, where should we host the files, what type of security issues do I need to be aware of, what's the best software to use for developing websites (I use visual studio at work), where can I find some design techniques, etc. Any help is appreciated.

  Read the article

< Previous Page | 566 567 568 569 570 571 572 573 574 575 576 577  | Next Page >