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  • How to have a function with a nullable string parameter in Go?

    - by yuku
    I'm used to Java's String where we can pass null rather than "" for special meanings, such as use a default value. In Go, string is a primitive type, so I cannot pass nil (null) to a parameter that requires a string. I could write the function using pointer type, like this: func f(s *string) so caller can call that function either as f(nil) or // not so elegant temp := "hello"; f(&temp) but the following is unfortunately not allowed: // elegant but disallowed f(&"hello"); What is the best way to have a parameter that receives either a string or nil?

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  • asynchronous .js file loading syntax

    - by taber
    Hi, I noticed that there seems to be a couple of slightly different syntaxes for loading js files asynchronously, and I was wondering if there's any difference between the two, or if they both pretty much function the same. I'm guessing they work the same, but just wanted to make sure one method isn't better than the other for some reason. :) Method One (function() { var d=document, h=d.getElementsByTagName('head')[0], s=d.createElement('script'); s.type='text/javascript'; s.src='/js/myfile.js'; h.appendChild(s); })(); /* note ending parenthesis and curly brace */ Method Two (Saw this in Facebook's code) (function() { var d=document, h=d.getElementsByTagName('head')[0], s=d.createElement('script'); s.type='text/javascript'; s.async=true; s.src='/js/myfile.js'; h.appendChild(s); }()); /* note ending parenthesis and curly brace */

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  • jquery checkbox help

    - by sea_1987
    The Problem I am trying to run some ajax on one my pages for my website, basically I have three checkboxes all of which on pageload are unselected, when a checkbox is clicked I need to be able load in via ajax the relevant HTML. This system is currently a PHP script that depending on what the POST is set returns a different view, so I think all I need to is send the POST via AJAX, but I need to do everytime a new checkbox is checked. My HTML looks like this, div class="segment"> <div class="label"> <label>Choose region: </label> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio checked" value="Y" name="area[Nationwide]" id="inp_Nationwide"> </div> <div class="label "> <label for="inp_Nationwide">Nationwide</label> </div> <div class="s">&nbsp;</div> </div> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio checked" value="Y" name="area[Lancashire]" id="inp_Lancashire"> </div> <div class="label "> <label for="inp_Lancashire">Lancashire</label> </div> <div class="s">&nbsp;</div> </div> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio" value="Y" name="area[West_Yorkshire]" id="inp_West_Yorkshire"> </div> <div class="label "> <label for="inp_West_Yorkshire">West Yorkshire</label> </div> <div class="s">&nbsp;</div> </div> <div class="s">&nbsp;</div> </div> </div> My current attempt was to ascertain whether the input has been clicked so I have done this with my javascript, though this is probably wrong, $('input.radio').click(function(){ if($(this).hasClass('clicked')) { $(this).removeClass('clicked'); } else { $(this).addClass('clicked'); } });

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  • How do I get the URLs from any tab in any open browser

    - by Kasper
    I am trying to detect which web in sharepoint that the user is looking at right now. One approach could be to read the URls from the browser and try to compare them to a reference URL to the sharepoint solution. I have not yet been able to locate any solution that works in both IE and Firefox. The idea is to write a small C# app that will harvest the URLs and do the comparing. TIA

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  • Issues with absolute paths for js files in website

    - by Vinni
    Hello guys, I have a website which has so many sub folders in it. I have following paths references to my js and css files. <link rel="stylesheet" type="text/css" href="css/styles.css" /> <script type="text/javascript" src="js/jquery.js"></script> the above code is working fine on my local machine. the JS file is not loading when i host the website into production server. Problem in my hosting server is my website is ponted to www.somewebsitename.com instead www.somewebsitename.com/home.aspx . When I load the page with www.somewebsitename.com/home.aspx this url it is loading all the js files it is not loading files only when I load the page with www.somewebsitename.com. Please solve my problem. How to reference JS files so that they ll loaded how ever u visit the page.

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  • jsTree causes that links on whole page are broken

    - by niao
    Greetings, I have the following problem. In my asp.net mvc page (which is a partial view) I create an instance of jsTree as follows: <script type="text/javascript"> $(function() { $("#industries").tree({ callback: { onselect: function(NODE, TREE_OBJ) { $("#SelectedIndustryROWGUID").val($(NODE).attr("id")); $("#resultMessage").append($(NODE).attr("rel")); } }, data: { type: "json", async: true, opts: { method: "GET", url: "/CreateMessage/GetIndustries/" } } }); }); this works fine but then, when I click on any link on the page, it does not work. The links are executed when I choose "open in new tab" option from context menu. Can someone please help me with this?

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  • WCF issues with KnownType for Dictionary

    - by Tom Frey
    Hi, I have a service that implements the following DataMember: [DataMember] public Dictionary<string, List<IOptionQueryResult>> QueryResultItems { get; set; } I have the class "OptionQuerySingleResult" which inherits from IOptionQueryResult. Now, I understand that I need to make the OptionQueryResult type "known" to the Service and thus tried to add the KnownType in various ways: [KnownType(typeof(Dictionary<string, OptionQuerySingleResult[]>))] [KnownType(typeof(Dictionary<string, List<OptionQuerySingleResult>>))] [KnownType(typeof(OptionQuerySingleResult)] However, none of those approaches worked and on the client side I'm either getting that deserialization failed or the server simply aborted the request, causing a connection aborted error. Does anyone have an idea on what's the proper way to get this to work? I'd like to add, the if I change the QueryResultItems definition to use the concrete type, instead of the interface, everything works just fine. Thanks, Tom

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  • dates and times in emacs lisp

    - by Stephen
    Hi, I understand emacs lisp is great for handling dates and times, but does it have a function to convert strings to internal representation of integers using formats like %Y, %m, %d, %H, %M, %S, and so on? And also, in the emacs reference manual, it says that times are lists of two or three integers, but is there a more formal specification or description? ~ Thanks ~

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  • Packaging Android resource files within a distributable Jar file

    - by Jeff Gilfelt
    I am working on some reusable Android code that I would like to distribute to other developers for use within their own applications. The code has some resource dependencies (layouts, xml & png drawables) that I would like to be able to include and reference within a single package (Jar file). Is this possible, and if so what is the best method to do this?

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  • emacs & icicles: auto-completion from a dictionary?

    - by Mica
    I just installed icicles with emacs, and so far I am liking it a lot. I'm not entirely sure if this is possible, but I would like to implement (or use, if it already exists) a feature in icicles that would auto-complete words from an English dictionary. So, if I'm writing something and need a word that rhymes with floor, I can type in *or, or even better, for alliteration, type in flo* and have it return all the words from the dictionary that start with flo Questions: Does something like this exist? If it does not exist, what would be the best way to go about this? Should I somehow hook into aspell? Or just index a long file of words?

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  • How to avoid HTML Canvas auto-stretching

    - by Tom
    I have the following piece of HTML: <style type="text/css"> #c{width:200px;height:500px} </style> <canvas id="c"></canvas> <script type="text/javascript"> var i = new Image(); i.onload = function () { var ctx = document.getElementById('c').getContext('2d'); ctx.drawImage(i, 0, 0); } i.width = i.height = 20; // actual size of square.png i.src = 'square.png'; </script> The issue is that the drawn image is automatically stretched (resized) proportionally with the size of the canvas. I have tried using all available parameters (drawImage(i, 0, 0, 20, 20, 0, 0, 20, 20)) and that didn't help. What is causing my drawing to stretch and how can I prevent that? Thanks, Tom

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  • IFrame causing javascript code to not execute

    - by Claudio Redi
    Does anyone know why this code doesn't work. This means, the alert is NOT fired <iframe/> <script type="text/javascript">alert('hello');</script> While this code with the alert BEFORE the Iframe works perfeclty. This means the alert is fired <script type="text/javascript">alert('hello');</script> <iframe/> Seems that no javascript placed after the iframe is executed, I don't find any logic to this.

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  • iphone, get the object count without performing a fetch?

    - by Andrew
    Hi, I seem to recall that it's possible to return the resulting object count from an NSPredicate in CoreData without actually performing a fetch, but I can't find any reference to this. Can someone confirm that I wasn't dreaming (sad dream to have!), and would this be safe to do in another thread? Thanks Andy

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  • Winforms: calling entry form function from a different class

    - by samy
    I'm kinda new to programming and got a question on what is a good practice. I created a class that represents a ball and it has a function Jump() that use 2 timers and get the ball up and down. I know that in Winforms you got to call Invalidate() every time you want to repaint the screen, or part of it. I didn't find a good way to do that, so I reference the form in my class, and called Invalidate() inside my ball class every time I need to repaint to ball movement. (this works but I got a feeling that this is not a good practice) Here is the class I created: public class Ball { public Form1 parent;//----> here is the reference to the form public Rectangle ball; Size size; public Point p; Timer timerBallGoUp = new Timer(); Timer timerBallGDown = new Timer(); public int ballY; public Ball(Size _size, Point _p) { size = _size; p = _p; ball = new Rectangle(p, size); } public void Jump() { ballY = p.Y; timerBallGDown.Elapsed += ballGoDown; timerBallGDown.Interval = 50; timerBallGoUp.Elapsed += ballGoUp; timerBallGoUp.Interval = 50; timerBallGoUp.Start(); } private void ballGoUp(object obj,ElapsedEventArgs e) { p.Y++; ball.Location = new Point(ball.Location.X, p.Y); if (p.Y >= ballY + 50) { timerBallGoUp.Stop(); timerBallGDown.Start(); } parent.Invalidate(); // here i call parent.Invalidate() 1 } private void ballGoDown(object obj, ElapsedEventArgs e) { p.Y--; ball.Location = new Point(ball.Location.X, p.Y); if (p.Y <= ballY) { timerBallGDown.Stop(); timerBallGoUp.Start(); } parent.Invalidate(); // here i call parent.Invalidate() 2 } } I'm wondring if there is a better way to do that? (sorry for my english)

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  • mysql query clarification

    - by JPro
    I have a query which I am wondering if the result I am getting is the one that I am expecting. The table structure goes like this : Table : results ID TestCase Set Analyzed Verdict StartTime Platform 1 1010101 ros2 false fail 18/04/2010 20:23:44 P1 2 1010101 ros3 false fail 19/04/2010 22:22:33 P1 3 1232323 ros2 true pass 19/04/2010 22:22:33 P1 4 1232323 ros3 false fail 29/04/2010 22:22:33 P2 Table : testcases ID TestCase type 1 1010101 NOSNOS 2 1232323 N212NS is there any way to display only the latest fails on each platform? in the above case Result shoud be : ID TestCase Set Analyzed Verdict StartTime Platform type 2 1010101 ros3 false fail 19/04/2010 22:22:33 P1 NOSNOS 4 1232323 ros3 false fail 29/04/2010 22:22:33 P2 N212NS

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  • Passing a non-iterable to list.extend ()

    - by JS
    Hello, I am creating a public method to allow callers to write values to a device, call it write_vals() for example. Since these values will by typed live, I would like to simplify the user's life by allowing them type in either a list or a single value, depending on how many values they need to write. For example: write_to_device([1,2,3]) or write_to_device(1) My function would like to work with a flat list, so I tried to be clever and code something like this: input_list = [] input_list.extend( input_val ) This works swimmingly when the user inputs a list, but fails miserably when the user inputs a single integer: TypeError: 'int' object is not iterable Using list.append() would create a nested list when a list was passed in, which would be an additional hassle to flatten. Checking the type of the object passed in seems clumsy and non-pythonic and wishing that list.extend() would accept non-iterables has gotten me nowhere. So has trying a variety of other coding methods. Suggestions (coding-related only, please) would be greatly appreciated.

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  • What is the "box model?"

    - by Chris
    During a recent interview for a front-end developer position I was asked what the box model was. I thought the interviewer was referring to testing (i.e. white box testing, black box testing). I was wrong. What is the box model, in reference to front-end development?

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  • Interop.Outlook.UserProperties.Add causing problem during connection time

    - by Akie
    Hi All, I have created a plug-in for outlook. Plug-in has only below code. private void OnNewOutlookInspector(Outlook.Inspector OutlookInsptr) { Outlook.MailItem MlItem = (Outlook.MailItem)OutlookInsptr.CurrentItem; //if I remove below line. Everything is working fine. MlItem.UserProperties.Add("INSPINIT", Outlook.OlUserPropertyType.olText , true , true ).Value = "1"; } public void OnConnection(object application, Extensibility.ext_ConnectMode connectMode, object addInInst, ref System.Array custom) { applicationObject = application; addInInstance = addInInst; MessageBox.Show("in connection new 2"); OutlkApp = (Outlook.Application)application; OutlkInsptrs = OutlkApp.Inspectors; OutlkInsptrs.NewInspector += new Outlook.InspectorsEvents_NewInspectorEventHandler(OnNewOutlookInspector); } Problem I am facing is, When I send HTML mail while plug-in is enabled, receiving end it is being received as a plain text. Below is the mail content along with the header and body at recieving end. x-sender: [email protected] x-receiver: [email protected] Received: from blr-s-07.pointcrossblr.com ([192.168.1.107]) by blr-ws-134.pointcrossblr.com with Microsoft SMTPSVC(6.0.2600.5949); Wed, 22 Dec 2010 17:11:02 +0530 Received: from blrws134 ([192.168.1.175]) by blr-s-07.pointcrossblr.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 22 Dec 2010 17:11:02 +0530 From: "Ashif Nataliya" <[email protected]> To: <[email protected]> Cc: <[email protected]> Subject: RTF FRM blr to pc.com cc blr-ws-134 Date: Wed, 22 Dec 2010 17:11:02 +0530 Message-ID: <[email protected]> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_00F7_01CBA1FB.36115580" X-Mailer: Microsoft Outlook 14.0 Content-Language: en-us X-MS-TNEF-Correlator: 00000000DCB2344DE8F50F4FBC91085BB5C06D55A4172000 thread-index: AcuhzRuTOBkvHPUnS1aLi9+cHNAWhA== Return-Path: [email protected] X-OriginalArrivalTime: 22 Dec 2010 11:41:02.0822 (UTC) FILETIME=[1C788860:01CBA1CD] This is a multipart message in MIME format. ------=_NextPart_000_00F7_01CBA1FB.36115580 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit HTML Test Test Mail ------=_NextPart_000_00F7_01CBA1FB.36115580 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="winmail.dat" // and some other code..... Any help is appreciated. Thanks.

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  • View print CSS in IE7 or IE8

    - by RVanasse
    I'm debugging a site that has problems with element positioning when printing (I have a separate print.css file linked by a link element with the media="print" attribute). This problem only occurs in IE7 and IE8. What I'm looking for is a way to view the page using the print media type, but while still having IE8's developer tools available to view element details and edit in real-time, etc. The function I'm looking for would be similar to the "Display CSS by Media Type" feature in Chris Pederick's Web Developer Extension for Firefox. (But this problem doesn't occur in firefox...nor in safari, or even in IE6.)

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  • Ruby erb template- try to change layout- get error

    - by nigel curruthers
    Hi there! I'm working my way through adapting a template I have been given that is basically a list of products for sale. I want to change it from a top-down list into a table layout. I want to end up with something as follows- <div id= 'ladiesproducts'> <% ladies_products = hosting_products.find_all do |product| product.name.match("ladies") end %> <table><tbody> <% [ladies_products].each do | slice | %> <tr> <% slice.each do | product | %> <td> <h4><%= product.name.html %></h4> <p><%= product.description %></p> <% other parts go here %> </td> <% end %> </tr> <% end %> </tbody></table> </div> This works fine for the layout that I am trying to achieve. The problem I have is when I paste back the <% other parts go here % part of the code. I get an internal error message on the page. I am completely new to Ruby so am just bumbling my way through this really. I have a hunch that I'm neglecting something that is probably very simple. The <% other parts go here %> code is as follows: <input type='hidden' name='base_renewal_period-<%= i %>' value="<%= product.base_renewal_period %>" /> <input type='hidden' name='quoted_unit_price-<%= i %>' value="<%= billing.price(product.unit_price) %>" /> <p><input type='radio' name='add-product' value='<%= product.specific_type.html %>:<%= i %>:base_renewal_period,quoted_unit_price,domain' /><%= billing.currency_symbol.html %><%= billing.price(product.unit_price, :use_tax_prefs) %> <% if product.base_renewal_period != 'never' %> every <%= product.unit_period.to_s_short.html %> <% end %> <% if product.setup_fee != 0 %> plus a one off fee of <%= billing.currency_symbol.html %><%= sprintf("%.2f", if billing.include_tax? then billing.price(product.setup_fee) else product.setup_fee end) %> <% end %> <% if product.has_free_products? %> <br /> includes free domains <% product.free_products_list.each do | free_product | %> <%= free_product["free_name"] %> <% end %> <% end %> * </p> <% i = i + 1 %> <% end %> <p><input type='submit' value='Add to Basket'/></p> </form> <% unless basket.nil? or basket.empty? or no_upsell? %> <p><a href='basket?add-no-product=package'>No thank you, please continue with my order ...</a></p> <% end %> <% if not billing.tax_applies? %> <% elsif billing.include_tax? %> <p>* Includes <%= billing.tax_name %></p> <% else %> <p>* Excluding <%= billing.tax_name %></p> <% end %> If anyone can point out what I'm doing wrong or what I'm missing or failing to change I would GREATLY appreciate it! Many thanks in advance. Nigel

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  • Is there a tool out there that lets you print a colour chart / palette of colours used on a web page

    - by undefined
    I want to print a table of the colours used in a web page that my graphic designer has produced - I have .png files at present and use Fireworks to view them. It would be great if there was a tool that lets you print a table with the colour and hex value so I can easily reference when programming. Anyone come across such a thing? Sounds to me like there should be a firefox extension or similar?

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  • Unchecked_Conversion in ada

    - by maddy
    Hi all, Can anyone please make me clear about the use of unchecked conversion in ada language.I had tried the pdf and net but all doesnt give me a clear picture to me. Now i have a small piece of code shown below: subtype Element4_Range is integer range 1..4; subtype Element3_Range is integer range 1..3; subtype Myarr_Range is integer range 1..10; type Myarr3_Type is array (Myarr_Range) of Element3_Range; type Myarr4_Type is array (Myarr_Range) of Element4_Range; Myarr3 : Myarr3_Type; Myarr4 : Myarr4_Type := (1,2,3,3,1,3,2,1,2,1); Count_1 : Integer := 0; Count_2 : Integer := 0; Count_3 : Integer := 0; *function To_Myarr3 is new Unchecked_Conversion(Myarr4_type,Myarr3_type);* Now my doubt here is what does the function Myarr3 exactly do? Thanks and regards maddy

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