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Color blindness: Are you aware of it? Do you design for it?

- by User

I'm curious whether many of us who do design or take design decisions have ever heard of this problem. I'm aware there are dangerous color combinations, like green + red. This is probably one of the most popular cases of color blindness. If you have green text on a red background and vice versa some people won't see anything. I've also seen in practice that green text on a blue background was not seen by one guy. What other color compositions should be avoided, and how often these cases are to be expected? Let us make some ranging by encounter probability who has the numbers. Addition: I've just remembered one very bad example that causes problems to just about everyone - blue text on a black background. It's unreadable for all intents and purposes. Never could understand what could possibly compel a web master to use this color combination...

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C# StringBuilder question

- by andrew

in a C# file i have a class Archiver { [DllImport("Archiver.dll")] public static extern void archive(string data, StringBuilder response); } string data is an input, and StringBuilder response is where the function writes something the archive function prototype (written in C) looks like this: void archive(char * dataChr, char * outChr); and it receives a string in dataChr, and then does a strcpy(outChr,"some big text"); from C# i call it something like this: string message = "some text here"; StringBuilder response = new StringBuilder(10000); Archiver.archive(message,response); this works, but the problem, as you might see is that i give a value to the StringBuilder size, but the archive function might give back a (way) larger text than the size i've given to my StringBuilder. any way to fix this?

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How HID devices work when programming?

- by user1008476

I have a barcode scanner works as HID device. Everytime a barcode scans it goes directly to windows keyboard, for example if I open notepad I can see the barcode typed there. As far as I know programmatically is it possible to to read HID data from your HID devices. But what happens if the user is already on a form with a text edit control? The scanned code will go inside the text box. Can you block incoming text and make a background-only processing? Can you explain the theory please?

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Creating an Order Column for encrypted data

- by SetiSeeker

I am saving encrypted data to a database. Is there a way I can create a "hashcode" or fingerprint or checksum of the plain text data, that if I sort / order by on the "hashcode" the order would be the same as if I had saved the plain text data and perform the same sort / order by operation on it? I basically need a SOUNDEX() type function that will give me a value that will maintain the order of the plain text data. I would then save both encrypted data and the "hashcode" and when querying the data order by the "hashcode" field. I need to perform this in the application and preferably not in the SQL DB if at all possible. I am using Entity Framework and SQL 2008 and C# 4.0.

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Disambiguating Named Entities in Java

- by Alterscape

I have a list of strings (company names, in this case), and a Java program that extracts a list of things that look like company names out of mostly-unstructured text. I need to match each element of extracted text to a string in the list. Caveat: the unstructured text has typos, things like "Blah, Inc." referred to as "Blah," etc. I've tried Levenshtein Edit Distance, but that fails for predictable reasons. Are there known best-practices ways of tackling this problem? Or am I back to manual data-entry?

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High resolution on small screen

- by Andrew Cetinick

I just purchased a new ultrabook (Asus UX32VD). Awesome laptop, but I am having trouble using it with its native resolution being 1920 x 1080. Text is so small and hard to read. I have increased the text size in the display options but it don't really improve it for all scenarios, especially in webpages. I am wondering if there is a possible solution to this? Simply lowering the resolution makes everything look pixelated.

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Getting value from a texbox in asp.net

- by user279521

Hi, I have a web page which contains multiple panels (used to show and hide various textboxes) and one particular panel contains textboxes that is used to edit records. However, when I am attemtping to update the table, the txtVendorID.Text.Trim() is blank. SqlConnection con = new SqlConnection(strConn); string sqlUpdateVendor = "usp_Vendor_Update"; SqlCommand cmdUpdateVendor = new SqlCommand(sqlUpdateVendor, con); cmdUpdateVendor.CommandType = CommandType.StoredProcedure; cmdUpdateVendor.Parameters.Add(new SqlParameter("@RecID", SqlDbType.VarChar, 50)); cmdUpdateVendor.Parameters["@RecID"].Value = Request.QueryString["Rec_ID"]; cmdUpdateVendor.Parameters.Add(new SqlParameter("@empid", SqlDbType.VarChar, 11)); cmdUpdateVendor.Parameters["@empid"].Value = txtEmpIDNumber.Text.Trim(); cmdUpdateVendor.Parameters.Add(new SqlParameter("@VendorName", SqlDbType.VarChar, 100)); cmdUpdateVendor.Parameters["@VendorName"].Value = txtVendorName.Text.Trim(); Any idea why the textbox does not contain a value?

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Document file format for universal adoption?

- by Scott Muc

I don't want to assume that someone has Word installed on their machine. What is the best file format so that everyone can read a document file? The only ones I can think of are: Rich Text Format Open Document Format Portable Document Format Plaint Text For example, what would be the best file format to write a resume in? I've actually written mine in XHTML, but some places simply demand a .doc file.

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How to replace plain URLs with links?

- by Sergio del Amo

I am using the function below to match URLs inside a given text and replace them for HTML links. The regular expression is working great, but currently I am only replacing the first match. How I can replace all the URL? I guess I should be using the exec command, but I did not really figure how to do it. function replaceURLWithHTMLLinks(text) { var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/i; return text.replace(exp,"<a href='$1'>$1</a>"); }

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creating button

- by eomer

hi I started to learn as3 using fdt i managed to put texts on screen now i want to show the text after the button is clicked but the button does not appear here is the code ` package { import flash.events.MouseEvent; import flash.media.Camera; import mx.controls.Button; import flash.display.Sprite; import flash.text.TextField; public class test2 extends Sprite { private var tField:TextField; public function click(e:MouseEvent):void { tField = new TextField(); tField.text="ffff"; addChild(tField); } public function test2():void { var aa:Button=new Button(); aa.label="deneme"; aa.x=100; aa.y=200; aa.addEventListener(MouseEvent.CLICK, click) } } } ` help me pleaseee

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Show Div When Radio Checked

- by maniootek

I tried to use this code: <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js" type="text/javascript"></script> <style type="text/css"> div {display: none} </style> <script type="text/javascript"> $('.radio1').click(function () { $('.div1').show(); }); $('.radio2').click(function () { $('.div2').show(); }); </script> <label><input type="radio" name="group1" class="radio1"></label> <label><input type="radio" name="group1" class="radio2"></label> <div class="div1">Radio1 selected !</div> <div class="div2">Radio2 selected !</div> But when I check any radio then notthing happens. I tried with Fiddle: http://jsfiddle.net/Ac9c4/ and same no results Any idea?

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vb.net session variable passing "space" from one page to another

- by iuret

i have 2 aspx webpages with vb.net code. On the first page, I have a text box, on first page that says "Enter Hobby", but its not a required textbox. So if the user clicks submit, it'll load up the second page. Now in the second page i have textbox "hobby" which has maxlength = 10. and in the vb.net code i have hobby.text = session("hobby"). if the user doesnt fill up hobby in first page, the session comes with 10 "spaces" since maxlength is 10. I tried hobby.text = TRIM(session("hobby"), but nothing happens. Any idea how i can lose the spaces if nothing is inputted?

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Why is this c++ string concatenation missing a space?

- by danutenshu

I am working with c++ strings, and am a beginner at programming. I am expecting: 99 Red Balloons But I am receiving: 99 RedBalloons Why is that? #include <string> #include <iostream> using namespace std; int main() { string text = "9"; string term( "9 "); string info = "Toys"; string color; char hue[4] = {'R','e','d','\0'}; color = hue; info = "Balloons"; text += (term + color + info); cout << endl << text << endl; return 0; }

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Lua - initializing

- by Ockonal

Hello, I can't init lua correctly under Arch Linux. Lua - latest version. Here is my code: #include <stdio.h> extern "C" { #include <lua.h> #include <lauxlib.h> #include <lualib.h> } int main() { lua_State *luaVM = luaL_newstate(); if (luaVM == NULL) { printf("Error initializing lua!\n"); return -1; } luaL_openlibs(luaVM); lua_close(luaVM); return 0; } /tmp/cc0iJ6lW.o: In function main': test_lua.cpp:(.text+0xa): undefined reference toluaL_newstate' test_lua.cpp:(.text+0x34): undefined reference to `luaL_openlibs' test_lua.cpp:(.text+0x40): undefined reference to `lua_close' collect2: ld returned 1 exit status What's wrong?

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How to setup Proxy Cache with Nginx and Passenger

- by tiny

I use Nginx and Passenger for my rails application. I want to use proxy cache to cache my pages. However, every request go direct to my rails application. I don't know what wrong with my configuration. Below is my configuration: user www-data; worker_processes 1; events { worker_connections 1024; } http { passenger_root /usr/lib/ruby/gems/1.8/gems/passenger-2.2.15; passenger_ruby /usr/bin/ruby1.8; passenger_max_pool_size 6; passenger_max_instances_per_app 1; passenger_pool_idle_time 0; rails_spawn_method conservative; include mime.types; default_type application/octet-stream; server_names_hash_bucket_size 512; sendfile on; #tcp_nopush on; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_http_version 1.0; gzip_vary on; gzip_comp_level 6; gzip_proxied any; gzip_types text/plain text/css text/javascript application/javascript application/json application/x-javascript text/xml application/xml application/xml+rss; proxy_cache_path /var/www/cache/webapp levels=1:2 keys_zone=webapp:8m max_size=1000m inactive=600m; include vhosts/*.conf; include /opt/nginx/conf/sites-enabled/*; root /var/www; } server { listen 127.0.0.1:3008; server_name localhost; root /var/www/yoolk_web_app/public; # <--- be sure to point to 'public'! passenger_enabled on; rails_env development; passenger_use_global_queue on; } server { listen 80; server_name webpage.dev; proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; error_page 503 http://$host/maintenance.html; location ~* (css|js|png|jpe?g|gif|ico)$ { root /var/www/web_app/public; expires max; } location / { proxy_pass http://127.0.0.1:3008/; proxy_cache webapp; proxy_cache_valid 200 10m; } #More Location }

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MSBuild syntax for deleting files/directories and reporting what was deleted

- by Maslow

Vs2010 .net 4.0 targeted project if that affects the answers at all. I want to delete the bin and obj directories and output a message for the path of what was deleted. <Target Name="CleanOutputs" Condition="'$(MvcBuildViews)'=='true'"> <Message Text="Cleaning Outputs" Importance="high"/> <RemoveDir Directories="$(OutputPath);obj" RemovedDirectories="@(removed)" /> <Message Text="Removed: %(removed.FullPath)" Importance="high"/> <Message Text=" "/>  <MakeDir Condition="!Exists('$(OutputPath)')" Directories="$(OutputPath)" /> </Target> Is what I have, but the Removed: message never shows.

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Parsing HTML "Visually"

- by Midhat

OKay I am at loss how to name this question. I have some HTML files, probably written by lord Lucifier himself, that I need to parse. It consists of many segments like this, among other html tags <p>HeadingNumber</p> <p style="text-indent:number;margin-top:neg_num ">Heading Text</p> <p>Body</p> Notice that the heading number and text are in seperate p tags, aligned in a horizontal line by css. the css may be whatever Lucifier fancies, a mixture of indents, paddings, margins and positions. However that line is a single object in my business model and should be kept as such. So How do I detect whether two p elements are visually in a single line and process them accordingly. I believe the HTML files are well formed if it helps.

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MVC2 html dropdownlist is invisible

- by Deb

I am just trying to populate a html.dropdown list using mvc2 in VS2008. But the control is not displayed at all. Here is my code public ActionResult Index() { ViewData["Time"] = DateTime.Now.ToString(); var mdl = new List<SelectListItem>(); mdl.Add(new SelectListItem { Value = "1", Text = "Module One" }); mdl.Add(new SelectListItem { Value = "2", Text = "Module Two" }); ViewData["moduleList"] = new SelectList(mdl,"Value", "Text"); return View("MainMenu"); } and here is the markup <div> <%Html.DropDownList("moduleList", (IEnumerable<SelectListItem>)ViewData["moduleList"]); %> </div> Where did i go wrong ?

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referesh datagridview after database update in vb.net

- by Gbolahan

Dim myQuery = "UPDATE table1 SET data= CONCAT (data,'" & vbCrLf & "[ " & Date.Now() & " ]" & " " & "[" & getCN() & "]" & " " & txtTelenotes.Text & "[ item1 ]" & "') WHERE id='" & txtID.Text & "'" myCommand.Connection = conn myCommand.CommandText = myQuery myAdapter.SelectCommand = myCommand Dim myData As MySqlDataReader myData = myCommand.ExecuteReader() txtTelenotes.Text = "" dgvREcord.Refresh() tried refreshing the datagridview using dgvREcord.Refresh() but it does not load the changes form the database. Any help Pls.. Thanks.

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Learning 'dynamic' javascript bookmarklet

- by Seatbelt99

Little help for a javascript noob please... I have this in a .js file on my web server: Q=document.selection?document.selection.createRange().text:document.getSelection(); alert(Q); I highlight some text on a web page (tested with Chrome and firefox) and paste this into the address bar: javascript:(function(){vara=document.createElement('SCRIPT');a.type='text/javascript';a.src='http://automatethegame.com/js/test.js?';document.getElementsByTagName("head")[0].appendChild(vara)})(); it appears to do nothing. Any assistance or suggestions would be appreciated. thanks

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WinForms ToolTip will not re-appear after first use.

- by Roberto Sebestyen

I have a Forms C# application where I would like to use a toolTip on one of the text boxes. I Initialize the tool-tip in the constructor of the Form class, and it works the first time. So when I hover over the text box with my mouse it works, but once the toolTip times out and it goes away, it does not re-appear when I move my mouse away and back onto the control. I would expect it to come back and I'm wondering what I'm doing wrong. Here is how I initialize the tooltip: myTip = new ToolTip(); myTip.ToolTipIcon = ToolTipIcon.Info; myTip.IsBalloon = true; myTip.ShowAlways = true; myTip.SetToolTip(txtMyTextBox,"My Tooltip Text");

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mediawiki - How do I configure mediawiki to show heading numbering/lettering in the document?

- by hamlin11

When the table of contents is generated, it numbers sections based upon their heading. section 1 section 2 2.1 section 2.1 2.2 secttion 2.2 section 3 and so on. I would like these section numbers to appear at the paragraph level also. 1, (section 1 header text) ... section 1 content ... 2, (section 2 header text) ... section 2 content .... Any tips?

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XSLT: How to get XML

- by Jyotsna Sonawane

I have a XSL that transforms one format of XML into another. In input XML I have a node with following value - which is actually a XML string if we replace < with < (less than) for e.g. <Paragraph><Title><!CDATA[Pour les nuits du 2012-10-01 - 2012-10-30]]></Title><Text><![CDATA[TAXES INCLUSES.]]></Text></Paragraph> I want to have the content of otherInfo as a XML node in output XML. if I do , I do not get it as a XML node - it is output just as text. How can I make XSL output the content of otherInfo as XML node ?

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Vertically center CSS techniques don't work in Chrome

- by at.

I've gone through stackoverflow questions and a whole bunch of articles on vertically centering text like the following: http://blog.themeforest.net/tutorials/vertical-centering-with-css/ None of the techniques seem to work with the latest version of Chrome. Is that just the nature of Chrome? My text just always appears at the top. It seems that whenever I use 50% or 100% as values for CSS's height or top, nothing happens. I just need a single line of text vertically centered. line-height isn't helpful because I want it centered in the middle of the browser window... I don't know how tall the browser window is going to be. UPDATE: The problem is apparently Foundation 4. Once I delete the following everything works as expected: <link href="/assets/foundation_and_overrides.css?body=1" media="screen" rel="stylesheet" /> Any idea on how to make it work with Foundation 4?

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C++ include .h includes .cpp with same name as well?

- by aaron

so I have text.cpp, which 'includes' header.h, and then I have a header.cpp which includes header.h. How is header.cpp compiled as well? I'm walking through a guide here, and thoroughly confused. Also, what is the correct terminology for what I am asking? I know I sound like a moron, and I apologize, but I'm ignorant. Oh, main is in test.cpp. Also, if header.cpp includes , why can't I use iostream function calls in text.cpp if it is included? If I include iostream in text.cpp will it be included in the program twice (in other words, bloat it)?

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