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  • AutoComplete implementation - Interview Question

    - by user181218
    Hi, Say you have a DB table with two cols: SearchPhrase(String) | Popularity(Int). You need to initialize a DS so that you could use it to implement an autocomplete feature (like google suggest) comfortably. The requirement: Once the data from the db is processed into the data structure, when you type a letter you get the 10 most popular searchphrases from the db starting with that letter,then when you type the next one you get the 10 .... with these two letters and so on. The question only concerns planning the ds and pseudocoding Insert,Search etc. Note: YOU CANNOT USE TRIE DS. Any ideas?

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  • Returning S_FALSE from a C# COM dll

    - by AntonyW
    I have a method defined in IDL as follows : interface IMyFunc : IDispatch { [id(1), helpstring("method GetNextFunction")] HRESULT GetNextFunction([in,out] long* lPos, [out, retval] BSTR* bstrName); } Using C++ I always implemented this as follows : STDMETHODIMP CMyFunc::GetNextFunction(long *nID, long *lPos, BSTR *bstrName) { if ( function to return ) { // setup return values; return S_OK; } else { // just exit return S_FALSE; } } Now I am implementing this in C# and have used tlbimp on the type library and ended up with : public string GetNextFunction(ref int nID, ref int lPos) I understand that this is because [out, retval] is used as the return type instead of the HRESULT as in C++. Is there a simple way to return the S_OK / S_FALSE values without changing the method definition? The only way I can see is that I have to use ildasm / ilasm to add preservesig so I end up with something like this : public int GetNextFunction(ref int nID, ref int lPos, ref string bstrName) I was wondering if there was some other way without doing the il compilation step.

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  • Validation.HasError attached property

    - by Nima
    Did I miss something? 1- Style <Style TargetType="{x:Type TextBox}"> <Style.Triggers> <DataTrigger Binding="{Binding Path=Validation.HasError}" Value="true"> <Setter Property="BorderBrush" Value="Blue" /> </DataTrigger> </Style.Triggers> <Setter Property="MinWidth" Value="160" /> <Setter Property="Margin" Value="0 7 0 0"/> </Style> 2 - Viewmodel implement IDataErrorInfo 3- textBox in view <TextBox x:Name="FirstName" Text="{Binding Person.FirstName, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=true}"></TextBox> 3 - I use Caliburn MVVM I got " BindingExpression path error: 'Validation' property not found on 'object' ''PersonWindowViewModel' (HashCode=38783181)'. BindingExpression:Path=Validation.HasError; DataItem='PersonWindowViewModel' (HashCode=38783181); target element is 'TextBox' (Name='FirstName'); target property is 'NoTarget' (type 'Object')"S

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  • Extension method return using generics

    - by Steven de Salas
    Is it possible to return a generic type using extension methods? For example, I have the following method: // Convenience method to obtain a field within a row (as a double type) public static double GetDouble(this DataRow row, string field) { if (row != null && row.Table.Columns.Contains(field)) { object value = row[field]; if (value != null && value != DBNull.Value) return Convert.ToDouble(value); } return 0; } This is currently used as follows: double value = row.GetDouble("tangible-equity"); but I would like to use the following code: double value = row.Get<double>("tangible-equity"); Is this possible and if so, what would the method look like?

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  • JQuery $.ajax doesn't return anything, but only in Google Chrome!?

    - by Shawson
    Hi All, I'm hoping someone can help me with this as I'm at a loss. I'm trying to simply load a plain text file into a page at runtime using jquery- everything works fine in IE8 (8.0.7600.16385), Firefox 3.6.3, however in Google Chrome 5.0.375.55 the "data" comes back as nothing- i get an empty alert box. This is the code i'm using; <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Animation Test</title> <script type="text/javascript" language="javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript" language="javascript"> $(document).ready(function () { $.ajax({ url: 'level1.txt', success: function (data) { alert(data); }, async: true, type: 'GET' }); }); </script> </head> <body> <canvas id="canvas" width="640" height="480"> Unsupported Browser </canvas> </body> </html> The file I'm loading in is a plain text file containing this; Central Cavern 100 O.........1.C....C...........1.O O................1.............O O..............................O O..............................O O......................B1..B...O O=============~~~~=~~~~========O O.............................1O O===...........................O O............A..OOO.B..........O O====...<<<<<<<<<<<<<<<<<<<<...O O............................==O O..............................O O..........B........OOO.....===O O....===============...........O O%............................XO O==============================O (Yes- it's the first level from Manic Miner! I'm making a javascript version using the html5 canvas to get my head around using it.) I'm at a total loss- it can't be the code because it runs in the other 2 browsers- is there an issue with jquery and this version of Chrome? Thanks for reading!! Shaw.

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  • php http pipeline

    - by asaf
    Hi! I'm trying to get timestamp on beginRequest and on endRequest when processing an http request using php. I know how to do it on asp.net (using httpModules and the finction beginRequest and endRequest). Does anyone know if this option is available on php and guide me how to do it? (I'm not looking for a solution, just some guiding or good reference because i couldn't find any...)

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  • Is there any way to modify a column before it is ordered in MySQL?

    - by George Edison
    I have a table with a field value which is a varchar(255). The contents of the field can be quite varied: $1.20 $2994 $56 + tax (This one can be ignored or truncated to $56 if necessary) I have a query constructed: SELECT value FROM unnamed_table ORDER BY value However, this of course uses ASCII string comparison to order the results and does not use any numerical type of comparison. Is there a way to truly order by value without changing the field type to DECIMAL or something else? In other words, can the value field be modified ('$' removed, value converted to decimal) on the fly before the results are sorted?

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  • How to transfer a post request in curl into a ruby script?

    - by 0x90
    I have this post request: curl -i -X POST \ -H "Accept:application/json" \ -H "content-type:application/x-www-form-urlencoded" \ -d "disambiguator=Document&confidence=-1&support=-1&text=President%20Obama%20called%20Wednesday%20on%20Congress%20to%20extend%20a%20tax%20break%20for%20students%20included%20in%20last%20year%27s%20economic%20stimulus%20package" \ http://spotlight.dbpedia.org/dev/rest/annotate/ How can I write it in ruby? I tried this as Kyle told me: require 'rubygems' require 'net/http' require 'uri' uri = URI.parse('http://spotlight.dbpedia.org/rest/annotate') http = Net::HTTP.new(uri.host, uri.port) request = Net::HTTP::Post.new(uri.request_uri) request.set_form_data({ "disambiguator" => "Document", "confidence" => "0.3", "support" => "0", "text" => "President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package" }) request.add_field("Accept", "application/json") request.add_field("Content-Type", "application/x-www-form-urlencoded") response = http.request(request) puts response.inspect but got this error: #<Net::HTTPInternalServerError 500 Internal Error readbody=true>

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  • Why does C++ mandate that complex only be instantiated for float, double, or long double?

    - by templatetypedef
    According to the C++ ISO spec, §26.2/2: The effect of instantiating the template complex for any type other than float, double or long double is unspecified. Why would the standard authors explicitly add this restriction? This makes it unspecified, for example, what happens if you make complex<int> or a complex<MyCustomFixedPointType> and seems like an artificial restriction. Is there a reason for this limitation? Is there a workaround if you want to instantiate complex with your own custom type? I'm primarily asking this question because of this earlier question, in which the OP was confused as to why abs was giving bizarre outputs for complex<int>. That said, this still doesn't quite make sense given that we also might want to make complex numbers out of fixed-points types, higher-precision real numbers, etc. Thanks!

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  • Saving part of audio file (java)

    - by m159701m
    Hi evryone, While playing an audio file (.wav) I want , if I resort to ctrl+c , to stop the playback and save part of the audio file in a file called "file2.wav". Here's the thread I'd like to add to my code. Unfortunately it doesn't work at all. Thanks in advance class myThread extends Thread{ public void run(){ try { PipedOutputStream poStream = new PipedOutputStream(); PipedInputStream piStream = new PipedInputStream(); poStream.connect(piStream); File cutaudioFile = new File ("file2.wav"); AudioInputStream ais = new AudioInputStream(piStream, AudioFileFormat.Type.WAVE , cutaudioFile); poStream.write(ais,AudioFileFormat.Type.WAVE,cutaudioFile); }catch (Exception e){ e.printStackTrace(); } } // end run } // end myThread

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  • On Click alert if $.get returns a value, if not, submit the form

    - by bradenkeith
    If the submit button is clicked, prevent the default action and see if the field 'account_name' is already in use. If the $.get() returns a result, alert the user of the results. If it doesn't, submit form with id="add_account_form". My problem is that my else{} statement is not submitting the form. I get no response when submit is clicked & there is no value returned. Also I would like to change my code where it goes $("#add_account_form").submit(..) instead of .click() however, would that cause a problem when trying to submit the form later in the script? <script type="text/javascript"> $(document).ready( function () { $("#submit").click( function () { var account_name = $("input[name=account_name]").val(); $.get( "'.url::site("ajax/check_account_name").'", {account_name: account_name}, function(data){ if(data.length > 0){ confirm( "The account name you entered looks like the following:\n" +data+ "Press cancel if this account already exists or ok to create it." ); }else{ $("#add_account_form").submit(); } }); return false; }); }); </script> <p> <input type="submit" id="submit" class="submit small" name="submit" value="Submit" /> </p> </form> Thanks for your help. EDIT So anyone who runs into my problems, it's that $.get() is asynchronous, so it will always return false, or true depending on what submitForm is defined as. $.ajax() however, allows async to be set as false, which allows the function to finish before moving on. See what I mean: $(document).ready( function () { $("#add_account_form").submit( function () { var submitForm = true; var account_name = $("input[name=account_name]").val(); $.ajax({ type: "GET", async: false, url: "'.url::site("ajax/check_account_name").'", data: ({account_name: account_name}), success: function(data){ if(data.length > 0){ if(!confirm( "The account name you entered looks like the following:\n" +data+ "Press cancel if this account already exists or ok to create it." )){ submitForm = false; } } } }); if (submitForm == false ) { return false; } }); }); Thanks for your help @Dan

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  • Java ME bundle Microlog jars with my midlet jar.

    - by Nimrod Shory
    Hello, I'm pretty new to Java ME and i'm trying to use Microlog to handle logging in my midlet. In eclipse i can reference Microlog jars and it's all good in dev time, but when i try to launch the application the jars aren't found on the device. How can i bundle those referenced libs into my midlet? Thanks.

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  • how to return the current object?

    - by ajsie
    in code igniter you can type: $query = $this->db->query("YOUR QUERY"); foreach ($query->result() as $row) { echo $row->title; echo $row->name; echo $row->body; } i guess that the query method returns the object it's part of. am i correct? if i am, how do you type the line where it returns the object? so what i wonder is how it looks like inside the query method for the above code to be functional. public function query($sql) { // some db logic here with the $sql and saves the values to the properties (title, name and body) return X } with other words, what should X be?

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  • get fbml comments to automatically show form

    - by Cek
    I'm writing facebook app in fbml (not in iframe). I added comments with <fb:comments ...> and it appears to work. However, to add a comment, user has to click Add a comment... link to see the textarea and post button. I am wondering is there a way to automatically show the form? I want it to really look like here: developers.facebook.com/docs/reference/plugins/comments (with or without the like button)

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  • How do I get the current time in a Windows 7 gadget?

    - by norlando02
    For my first windows gadget I'm trying to make one that displays the current time and date. The code below is what I have, but I can't figure out why the javascript is not running. Any ideas? <html> <head> http-equiv="Content-Type" content="text/html; charset=Unicode" /> <title>Clock</title> <style type="text/css"> body { width: 130px; height: 60px; margin: 1 1 1 2; } body { font-family: Segoe UI, Arial; font-size: 11px; font-weight: bold; white-space: nowrap; } </style> <script type="text/javascript"> var background; var interval; var connection_id; var timeZone; var now; function load() { try { interval = 1000; connection_id = 0; timeZone = System.Time.currentTimeZone; update(); } catch(e){} } function update() { try { now = new Date(Date.parse(System.Time.getLocalTime(timeZone))); curDate.innerHTML = now.format('M jS, Y'); curTime.innerHTML = now.format('h:i:s A'); clearTimeout(connection_id); connection_id = setTimeout("update()", interval); } catch(e) {} </script> </head> <body onload="load()"> <div id="curDate"> </div> <div id="curTime"> </div> </body> </html>

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  • Problem in form submit through javascript

    - by Durga Dutt
    I am submitting form via javascript by using 'document.FormName.submit()' . But this is giving me error of 'submit is not a function'. I m using IE8 <script typr="text/javascript"> function submitForm() { document.theForm.submit() } </script> <body> <form name="theForm" method="post"> <input type="text" name= "name"> <input type="button" name="submit" value="submit" onclick="submitForm()"> </form> </body> Please help me ?

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  • how to get ipv6 public address on xp machine ?

    - by SR Dusad
    C:netsh netshinterface ipv6 netsh interface ipv6show addres Querying active state... Interface 6: Local Area Connection 3 Addr Type DAD State Valid Life Pref. Life Address Temporary Preferred 6d23h38m55s 23h36m8s 2001:db8:1dde:1:6d16:9d1:b1ec:2245 Public Preferred 29d23h59m30s 6d23h59m30s 2001:db8:1dde:1:201:2ff:fe29:23b6 Link Preferred infinite infinite fe80::201:2ff:fe29:23b6 The books says, after IPv6 is enabled on XP, auto configure will give it 3 addresses, a Link, a Public, and a Temporary one. But on my computer, I could only see Link, what was the problem? I used the XP machine. But when i try it on windows 2007 .it works fine and show me a public address. - How to get public ipv6 address from xp machine ? - on my xp machine ipv6 is enabled but when i use command tracert6 www.kame.net it shows No route to destination. Why Any type of help willl appreciated..

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  • Why does my submit button fail to trigger Javascript MVC?

    - by user54197
    I have a simple code from a book and the code should display data from my controller in the "results" span. What am I missing? <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <script type="text/javascript"> $("form[action$='GetQuote']").submit(function() { $.post($(this).attr("action"), $(this).serialize(), function(response) { $("#results").html(response); }); return false; }); </script> <h2>Index</h2> <%using (Html.BeginForm("GetQuote","Stocks")) { %> Symbol: <%= Html.TextBox("symbol") %> <input type="submit" /> <span id="results"></span> <% } %> <p><i><%=DateTime.Now.ToLongTimeString() %></i></p> </asp:Content>

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  • Swapping two jQuery draggable list items not working properly (with jsFiddle example)

    - by Tony_Henrich
    The minimalist working example below swaps the two boxes when box 'one' is dragged and dropped on box 'two'. The problem is that when box 'one' is dropped, its style has 'top' & 'left' values causing it to be placed away from where it should drop. Its class includes 'ui-draggable-dragging'. It seems the top & left values are related to the amount the elements were dragged before the drop. And the dragging was 'interrupted' hence the residual 'ui-draggable-dragging' class? What am I missing to make the swap work seamlessly? full jsfiddle example here <html> <head> <script type="text/javascript" src="includes/jquery-1.4.2.min.js"></script> <script type="text/javascript" src="includes/jquery-ui-1.8.2.custom.min.js"></script> <script type="text/javascript"> jQuery.fn.swapWith = function(to) { return this.each(function() { var copy_to = $(to).clone(true); var copy_from = $(this).clone(true); $(to).replaceWith(copy_from); $(this).replaceWith(copy_to); }); }; $(document).ready(function() { options = {revert: true}; $("li").draggable(options) $('#wrapper').droppable({ drop: function(event, ui) { $(ui.draggable).swapWith($('#two')); } }); }); </script> </head> <body> <form> <ul id="wrapper"> <li id='one'> <div style="width: 100px; height: 100px; border: 1px solid green"> one<br /></div> </li> <li id='two'> <div style="width: 110px; height: 110px; border: 1px solid red"> two<br /></div> </li> </ul> <br /> </form> </body> </html>

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  • Need to identify the component's selectedItem

    - by theband
    I am creating a lot of dynamic flex components like RadioButton, Combo Box, CheckBox. if(type=="mx.controls.CheckBox"){ //if(rep.currentIndex<5){ for each(j in x){ k=createNewInstanceOfClass(rep.currentItem.type); k.id="radioGroup"+rep.currentItem; k.label=j.linkname; k.data=j.linkname; linkPanel[rep.currentIndex].addChild(DisplayObject(k)); } When i click on Submit finally i need to get all the selected Values in each question. All the components are dynamically created at runtime.

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  • Electronic resources for learning Z/OS assembler?

    - by Jared
    This is a follow up to this question. I'm totally blind so printed books aren't an option. All the recommended books appear to have been published before electronic publishing got started. I've been able to learn the very basics but would like something between here's what a register is, and the IBM reference material. Searching the normal places like Safari Books Online has come up dry.

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  • argparse coding issue

    - by Carl Skonieczny
    write a script that takes two optional boolean arguments,"--verbose‚" and ‚"--live", and two required string arguments, "base"and "pattern". Please set up the command line processing using argparse. This is the code I have so far for the question, I know I am getting close but something is not quite right. Any help is much appreciated.Thanks for all the quick useful feedback. def main(): import argparse parser = argparse.ArgumentParser(description='') parser.add_argument('base', type=str) parser.add_arguemnt('--verbose', action='store_true') parser.add_argument('pattern', type=str) parser.add_arguemnt('--live', action='store_true') args = parser.parse_args() print(args.base(args.pattern))

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  • How to generate android styled javadocs ?

    - by Kaillash
    Hi, Is it possible to generate android styled javadocs for my android project (like http://developer.android.com/reference/java/lang/String.html, instead of http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html) Is it something regarding using of some custom doclet instead of standard doclet? If yes, then which one I have to use?

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  • Problem at JUnit test with generics

    - by Tom Brito
    In my utility method: public static <T> T getField(Object obj, Class c, String fieldName) { try { Field field = c.getDeclaredField(fieldName); field.setAccessible(true); return (T) field.get(obj); } catch (Exception e) { e.printStackTrace(); fail(); return null; } } The line return (T) field.get(obj); gives the warning "Type safety: Unchecked cast from Object to T"; but I cannot perform instanceof check against type parameter T, so what am I suppose to do here?

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