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  • Finding patterns in Puzzle games.

    - by José Joel.
    I was wondering, which are the most commonly used algorithms applied to finding patterns in puzzle games conformed by grids of cells. I know that depends of many factors, like the kind of patterns You want to detect, or the rules of the game...but I wanted to know which are the most commonly used algorithms in that kind of problems... For example, games like columns, bejeweled, even tetris. I also want to know if detecting patterns by "brute force" ( like , scanning all the grid trying to find three adyacent cells of the same color ) is significantly worst that using particular algorithms in very small grids, like 4 X 4 for example ( and again, I know that depends of the kind of game and rules ...) Which structures are commonly used in this kind of games ?

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  • using javascript replace() to match the last occurance of a string

    - by Dave
    I'm building an 'add new row' function for product variations, and I'm struggling with the regex required to match the form attribute keys. So, I'm basically cloning rows, then incrementing the keys, like this (coffeescript): newrow = oldrow.find('select, input, textarea').each -> this.name = this.name.replace(/\[(\d+)\]/, (str, p1) -> "[" + (parseInt(p1, 10) + 1) + "]" ) this.id = this.id.replace(/\_(\d+)\_/, (str, p1) -> "_" + (parseInt(p1, 10) + 1) + "_" ) .end() This correctly increments a field with a name of product[variations][1][name], turning it into product[variations][2][name] BUT Each variation can have multiple options (eg, color can be red, blue, green), so I need to be able turn this product[variations][1][options][2][name] into product[variations][1][options][3][name], leaving the variation key alone. What regex do I need to match only the last occurrence of a key (the options key)?

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  • Floating images with multiple sizes in CSS

    - by Jamie Chapman
    I'm wanting to be able to create a banner of floating images based on what are uploaded via users. The tool needs to have images of 50x50 and 100x100. At the moment, I just want to randomly display the images and tried to apply float:left. However, as you can see below - it leaves gaps. Is there an easy way to do this without programatically positioning the images? If you want the code so far, it's here: .wall { width: 300px; background-color: red; display: table; } .wall img { float: left; } and <div class="wall"> <img src="man1.png" alt=""/> <!-- ETC... !--> </div>

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  • How to write syntax highlighting? c++

    - by ML
    Hi All, I am embarking on some learning and I want to write my own syntax highlighting for files in C++. Can anyone give me ideas on how to go about doing this? To me it seems that when a file is opened: 1. it would need to be parsed and decided what type of source file it is. Trusting the extension might not be full-proof a way to know what keywords/commands apply to what language a way to decide what color each keyword/command gets I want to do this on OS X, C++ or Objective-C Can anyone provide pointers on how I might get started with this?

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  • How to add a 3rd level to my CSS drop down menu?

    - by Cynthia
    I have a 2-level drop down menu that looks great in all browsers. Now I want to add a 3rd level. How do I do that? Here is my HTML for the menu: <div class="nav"> <div class="navbar"> <ul class="menu"> <li><a href="#">Home</a></li> <li><a href="#">About JoyFactory</a> <ul class="sub-menu"> <li><a href="#">Who We Are</a></li> <li><a href="#">Our Education Concept</a></li> <li><a href="#">References</a></li> </ul> </li> <li><a href="#">JoyFactory Kinderkrippe</a> <ul class="sub-menu"> <li><a href="#">JoyFactory Kinderkrippe Oerlikon</a> <ul> <li><a href="#">item 1</a></li> <li><a href="#">item 2</a></li> <li><a href="#">item 3</a></li> <li><a href="#">item 4</a></li> </ul> </li> <li><a href="#">JoyFactory Kinderkrippe Seebach</a></li> </ul> </li> </ul> </div> </div> and here is my CSS: .nav { clear:both ; width:1020px ; height:55px ; background:url("images/nav-bg.png") no-repeat ; position:absolute ; top:125px ; left:-10px ; } .navbar { width:1000px ; height:50px ; margin:auto ; } ul.menu { margin-left:0 ; padding-left:0 ; list-style-type:none ; } .menu li { display:inline ; float:left ; height:50px ; margin:0 6px ; } .menu li a { font-family:'MyriadPro-SemiboldCond' ; font-size:24px ; color:#ffffff ; text-decoration:none ; height:50px ; line-height:50px ; padding:0px 10px ; } .menu li:hover, .menu li:hover a { background:#ffd322 ; color:#e32a0e ; } .sub-menu { position:absolute ; float:none ; padding:0 ; top:50px ; z-index:9999 ; background:#ffd322 ; margin-left:0 ; padding-left:0 ; } .sub-menu li { display:none ; min-width:175px !important ; margin: 0 !important; padding: 0 !important; } .sub-menu li a, .current-menu-parent .sub-menu li a { display:block ; background:#ffd322 ; font-family:arial,helvetica,sans-serif ; font-size:16px ; padding:0 10px ; border-top:1px solid #f37f10 ; border-left:none ; } .sub-menu li a:hover, .menu li.current-menu-parent .sub-menu li.current-menu-item a { background:#f37f10 } .menu li:hover li { float: none; display:block; clear: both; } Any help would be most appreciated! Many thanks :)

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  • What's the benefit of calling new on an object instance?

    - by Geo
    I'm reading [Programming Perl][1], and I found this code snippet: sub new { my $invocant = shift; my $class = ref($invocant) || $invocant; my $self = { color => "bay", legs => 4, owner => undef, @_, # Override previous attributes }; return bless $self, $class; } With constructors like this one, what's the benefit of calling new on an object instance? I assume that it's what it's for, right? My guess is that if anyone would want to write such a constructor, he would have to add some more code that copies the attributes of the first object to the one about to be created.

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  • Need advice with HTML table

    - by misha-moroshko
    I would like to code an HTML table with messages like this: The table will contain messages that will spread over first N columns (N may change). Lets call these N columns, the message area. Each message is located on X contiguous cells in the message area. X may also change. Each message has a name that contains words separated with underscores. How would you recommend to code this table in Javascript/jQuery such that: It would be easy to define a message (start cell, end cell, color, name) The name will break only after underscores (rather than in the middle of the word)

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  • plot only x and y axis (no box) in ggplot2

    - by Tyler Rinker
    The convention of some journals is to show only the x and y axis in a plot not a box around the entire plot area. How can I achieve this in ggplot2? I tried theme_minimal_cb_L from HERE but it seems to erase the entire box around the plot (does not leave the x and y axis) as seen here: Here's the code I'm using: dat <- structure(list(x = c(0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3), y1 = c(34, 30, 26, 23, 21, 19, 17, 16, 15, 13, 12, 12, 11), y2 = c(45, 39, 34, 31, 28, 25, 23, 21, 19, 17, 16, 15, 14)), .Names = c("x", "y1", "y2"), row.names = c(NA, -13L), class = "data.frame") library(reshape2); library(ggplot2) dat2 <- melt(dat, id='x') theme_minimal_cb_L <- function (base_size = 12, base_family = "", ...){ modifyList (theme_minimal (base_size = base_size, base_family = base_family), list (axis.line = element_line (colour = "black"))) } ggplot(data=dat2, aes(x=x, y=value, color=variable)) + geom_point(size=3) + geom_line(size=.5) + theme_minimal_cb_L()

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  • Need help to format the result page after searching

    - by kshama
    Hi, I have built a small text based search engine on ROR which will display relevant records having a specified search word in it.since few of the records has more than 1000 words i have truncated each result set to 200 characters.My views file search.html.erb looks like this <% @results_with_ranks.each do |result| -%> <% content_id = rtable.find(result[0]).content_id %> <% content= Content.find(content_id) %> <%= truncate content.body, :length => 200 %><br/> <p> Record id <%= content.id %></p> <hr style="color:blue"> <% end -%> I want to provide an option so that whenever any truncated record is selected its entire body has to be displayed. I also want to paginate the result page displaying some fixed number of records per page.Can any body help me in doing this? Thanks in advance.

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  • CSS and JavaScript relations ?

    - by Anil Namde
    I have table cell which has class "cellActive". Which has following defination .cellActive{background:"#DDDDDD"} Now i am trying to read the background color property for the cell and it comes null/"". var bgColor = cell.style.backgroundColor; // returning "" Is that something mistake on my part of its by behavior. If CSS class is assigning CSS to element can't we read its value in JS ? Does this mean that if we are not assigning property directly to the element we cant get it if in case its inheriting it ?

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  • StackOverflow WordPress Plugin: Sidebar Widget [closed]

    - by Fernando
    I used the idea from "StackOverflow badge to show in your blog" from here to develop a small WordPress plugin to show your SO reputation and badges on your WordPress weblog sidebar. It's awfully lacking some graphic design, style, color, etc. I also thought of adding the user avatar, and images for the different badges. But it's working so far, and it's pretty late and I have to get some sleep. But I'll add the stuff I mentioned tomorrow. That was quite an interesting PHP challenge. Hope someone finds it as usefull as me (already showing it off on my blog :P ). If you're interested: Download it here

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  • Links sometimes not working in WebView

    - by littleFluffyKitty
    On occasion links in the WebView will not respond. The highlight press color will appear around them but nothing happens. I am also using WebViewClient's shouldOverrideUrlLoading and that function is not called when this happens. Edit: I have narrowed this issue down to the following circumstances: The webpage is the first page a WebView opens. The webpage uses meta name="viewport" attribute in the html head The WebView is using WebView.getSettings().setUseWideViewPort(true); Android 2.1 (Doesn't appear to happen in later versions, didn't test earlier) If a webpage meeting those above is opened no links will work. If another similar page is loaded, those links will not work either. It is not until you load a page without meta name="viewport" that links start to work. After a page without that meta attribute is opened and then you load a page with the meta viewport attribute, the links start working.

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  • How do I make Pseudo classes work with Internet Explorer 7/8?

    - by Mel
    I've written the following code to create a three-column layout where the first and last columns have no left and right margins respectively: #content { background-color:#edeff4; margin:0 auto 30px auto; padding:0 30px 30px 30px; width:900px; } .column { float:left; margin:0 20px; } #content .column:nth-child(1) { margin-left:0; } #content .column:nth-child(3) { margin-right:0; } The problem is that this code does not work in Internet Explorer 7 and 8? The only pseudo class I can use with IE (in this case) would be "first-child," but this does not eliminate the right margin on the third and last column. Does anyone know of a way I can make this code work on IE 7/8?

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  • Animated record deletion with jquery like mootools example

    - by twitter
    I was reading around and saw this example from David Walsh about how to animate record deletion with mootools. Does the exact same effect exist in jquery? This is his mootools code. window.addEvent('domready',function() { $$('a.delete').each(function(el) { el.addEvent('click',function(e) { e.stop(); var parent = el.getParent('div'); var request = new Request({ url: 'mootools-record-delete.php', link: 'chain', method: 'get', data: { 'delete': parent.get('id').replace('record-',''), ajax: 1 }, onRequest: function() { new Fx.Tween(parent,{ duration:300 }).start('background-color', '#fb6c6c'); }, onSuccess: function() { new Fx.Slide(parent,{ duration:300, onComplete: function() { parent.dispose(); } }).slideOut(); } }).send(); }); }); });

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  • windows control library in c sharp

    - by apals
    I have just added a textbox, button, label to validate ID of 12 characters. The library is called check_ID. It works fine. The only problem is i have to access the forecolor of label, backcolor of textbox , forecolor of button as per color scheme of the project. But it seems that none of the properties of the objects in check_ID are available for modification. I have even changed the modifier to public of all objects by repoening the check_ID project. Is there another way to access the properties of these objects that are created using windows control library?. A very big thanks in advance.

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  • The C vs. C++ way

    - by amc
    Hi, So I have to write a program that will iterate through an image and record the pixel locations corresponding to each color pixel that appears in it. For example, given http://www.socuteurl.com/fishywishykissy I need to find the coordinates of all yellow, purple, dark pink, etc pixels. In C++ I would use a hash table to do this. I would iterate through the image, check each pixel's value, look up that value and either add to a vector of pixel coordinates if it were found or add a new entry to the table if the value were not already there. The problem is that I may need to write this program in pure C instead of C++. How would I go about doing this in C? I feel like implementing a hash table would be pretty obnoxious and error-prone: should I avoid doing that? I'm pretty inexperienced with C and have a fair amount of C++ experience, if that matters. Thanks.

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  • Graphiz: how to set 'default' arrow style?

    - by sdaau
    Hi all, Consider this dot language code: digraph graphname { subgraph clusterA { node [shape=plaintext,style=filled]; 1 -> 2 [arrowhead=normal,arrowtail=dot]; 2 -> 3 -> X2 -> 5; 6; 7; label = "A"; color=blue } } In the above example, only the 1 -> 2 connection will have the arrowhead=normal,arrowtail=dot style applied; all the other arrows will be of the "default" style. My question is - how do I set the arrow style (for the entire subgraph - or for the entire graph), without having to copy paste "[arrowhead=normal,arrowtail=dot];" next to each edge connection? Thanks in advance, Cheers!

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  • Page fully rendered event?

    - by alex
    I'm altering the DOM tree in plain JS and need to know when the changes get fully rendered on screen (mostly care about document dimensions). window.onload=function(){ ss = document.styleSheets[0]; for(i = 0; i < ss.cssRules.length; i++) { ss.deleteRule(i) }; ss.addRule('p', 'color: red;') // ... many more // call some other function when the page is fully rendered? } TIA.

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  • iPhone How to set a clearcolor for my custom view

    - by user355066
    Hi, I am creating a custom StyleLabel by extending the UIView, which provides a link for particular type of strings. I have successfully implemented this functionality. I am using this label in TableViewCell along with UILabel.i set UILabel & StyleLabel background color is set to clearColor. UILabel works fine, but StyleLabel shows background in blackColor. I am not sure what is the problem with the following code. Here is the drawRect method of CustomLabel class -(void) drawRect:(CGRect)rect { CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextClearRect(ctx, rect); [[UIColor clearColor] setFill]; CGContextAddRect(ctx, rect); CGContextDrawPath(ctx, kCGPathFill); [_text drawText:ctx]; } Thanks Sasikumar

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  • The easiest way to draw an image?

    - by Benno
    Assume you want to read an image file in a common file format from the hard drive, change the color of one pixel, and display the resulting image to the screen, in C++. Which (open-source) libraries would you recommend to accomplish the above with the least amount of code? Alternatively, which libraries would do the above in the most elegant way possible? A bit of background: I have been reading a lot of computer graphics literature recently, and there are lots of relatively easy, pixel-based algorithms which I'd like to implement. However, while the algorithm itself would usually be straightforward to implement, the necessary amount of frame-work to manipulate an image on a per-pixel basis and display the result stopped me from doing it.

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  • WebGL transparent black.

    - by Catalin Dumitru
    I have a strange problem that I can't figure out when trying to do blending in WebGL. Black is rendered fully transparent , and everything with shades of grey in it is rendered also semi transparent. I have set it to use the alpha channel as the source for transparency, and in some respect it works, every thing that isn't black/grey is rendered differently when changing the alpha value. but even when I set the alpha to 1, black is still displayed transparent. This is how I enable transparency: this.gl.blendFunc(this.gl.SRC_ALPHA, this.gl.ONE); this.gl.enable(this.gl.BLEND); this.gl.disable(this.gl.DEPTH_TEST); And the part of the shader that does transparency: gl_FragColor = vec4(texColor.rgb * vLightWeight, texColor.a * uAlpha); where texColor is the texture color that is being sampled, vLightWeight is the shadowing that is being calculated in the vertex shader, and uAlpha the uniform which I use for transparency.

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  • Displaying change of content through parent

    - by Mikhail
    I have DHTML content inside a fieldset. This includes plain html, nested objects (even other fieldsets), and value change of input, select, and textarea objects. I'd like to change the border of the fieldset if the contents have been changed. The following works: $('fieldset[name=qsfs127]').children('input').change(function(){ $(this).parent('fieldset').css({border:'1px solid red'}); }) This handles the input; I can extend it to select and textarea. Questions: How can I do the same for html changes? Can all of this change-tracking be done by comparing current html() to stored one? If yes for (2), will this handle cases of "undo"? Edit: I have a button that ajax-uploads contents, and saves the changes. I then remove the border color

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  • Can I set a style for the content of an iframe from the main page?

    - by Joel Coehoorn
    We have a page the embeds a Google Calendar in an iframe. Recently, a warning box div began appearing on the calendar that looks like this: <div id="warningBox" style="color:#aa0000;">Events from one or more calendars could not be shown here because you do not have the permission to view them.</div> Obviously the best solution here is to find the private events and remove them, but so far the search for those events has proved fruitless. This calendar is an aggregate of several calendars, including a few we don't control (ie weather). We're still looking, but in the meantime, I would like to try to hide that div. I know that iframes enforce the separation between the pages, such that the child page is pretty much a law unto itself. But surely there must be some way to set a style on an element inside the frame?

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  • Creating a pie chart for an app

    - by jhodgson4
    I'm developing an app which requires a pie chart to display a set number of modules. The modules need to be clickable, sending a value to the database for how many times the module has been clicked. The slices will change color etc depending on this database value. The slices will always be equal in size. All simple stuff. My question is what charting system would you use. I've been looking at google charts but I have no way of registering a value in a slice without changing its 'weight' in the chart. So ideally I would like to add data-stage="2" to each slice that I can access with a custom method. Also google charts seems quite heavy for what I need? Any advice would be greatly appreciated. Joe

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