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  • rails solr search limit total search results / get fixed number of results

    - by kLeos
    I'm trying to perform a search, order the results randomly, and only return a number of results, not all matches. Something like limit(2) I've tried using the Solr param 'rows' but that doesn't seem to do anything: @featured_articles = Article.search do with(:is_featured, true) order_by :random adjust_solr_params do |params| params[:rows] = 2 end end @featured_articles.total should be 2, but it returns more than 2 How can I get a randomized fixed number of results?

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  • attachment is not proper in mail in rails

    - by Harsh Raval
    hi, i'm sending a mail with attachment(1.pdf) but in mail it doesnt shows 1.pdf instead it shows some random file named "ATT008220.dat". i'm using Rails 3.0 following is the code i'm using: @file = File.read('c:/1.pdf') @file.force_encoding('BINARY') attachment "application/octet-stream" do |a| a.body = @file end anybody knows why its happening? any idea? Thanks & Regards, Harsh Raval.

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  • Android: Any way to auto-pair to another device over Bluetooth without prompting for a pin?

    - by D.
    I am looking for a way to connect to Android devices via Bluetooth without user intervention(assuming at least on device is set to "Discoverable"). Since 2.0, it seems the devices prompt for a random pin to be entered when connecting to each other for the first time. I've tried some Bluetooth projects, but none seem to work as the underlying Bluetooth Adapter code always kicks in. Is there any way around this? Thanks.

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  • Unknown syntax error.

    - by matt1024
    Why do I get a syntax error running this code? If I remove the highlighted section (return cards[i]) I get the error highlighting the function call instead. Please help :) def dealcards(): for i in range(len(cards)): cards[i] = '' for j in range(8): cards[i] = cards[i].append(random.randint(0,9) return cards[i] print (dealcards())

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  • what does "dead beef" mean?

    - by Xi
    Hi there: What does the word "dead beef" mean? I read it from a interview question. It has something to do with ipv6. I figured it could be a random hex number used for examples, like "The quick brown fox jumps over the lazy dog". Is my understanding correct? Or it has more significant meaning? Thanks!

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  • Removing entry from table

    - by Bnhjhvbq7
    Can't remove an entry from table. here's my code dropItem = dropList[ math.random( #dropList ) ] dropSomething[brick.index] = crackSheet:grabSprite(dropItem, true) dropSomething[brick.index].x = brick.x dropSomething[brick.index].y = brick.y dropSomething[brick.index].name = dropItem dropSomething[brick.index].type = "dropppedItems" collision function bounce(event) local item = event.other if item.type == "dropppedItems" then if item.name == "bomb" then Lives = Lives - 1 LivesNum.text = tostring(Lives) end item:removeSelf(); end end What I've tried: item:removeSelf(); - removes the whole table item = nil - seams to do nothing, the object continue to move and i still see the image

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  • How To Send A Confirmation Number To Others And Myself?

    - by user2913307
    On my website I have a reservation form. Once someone clicks submit a confirmation number comes up (that number is different everytime). I get an e-mail with everything the person filled out on my reservation form but I want to know their confirmation number as well. RANDOM NUMBER CODE $(document).ready(function() { var ranval = Math.floor((Math.random()*10000)+1); $('input[name=lblrand]').val(ranval); // bind 'myForm' and provide a simple callback function $('#myForm').ajaxForm(function() { alert("Your Message has been sent!Your Form Registration Number is: "+ ranval); $('#myForm').resetForm(); WHAT GETS E-MAILED TO ME $('#rSubmit').click(function(){ var data = {}; data.to = "[email protected]"; data.from = "[email protected]>"; data.subject = "New Reservation"; data.message = "New Reservation from Website \n"+ '\n First Name : '+$('#name').val()+ '\n Last Name : '+$('#lastname').val() + '\n Confirmation : '+$('#lblrand').val () + '\n Coupon Code : '+$('#coupon').val() + '\n Company Name : '+$('#company').val() + '\n Phone Number : '+$('#phone').val() + '\n Street Address : '+$('#street').val() + '\n Pick-Up City : '+$('#city').val()+ '\n Pick-Up State : '+$('#state').val() + '\n Pick-Up Zip : '+$('#zip').val() + '\n Date : '+$('#calendar').val()+ '\n Time : '+$('#time').val() + '\n Time : '+$('#time2').val() + '\n Time : '+$('#time3').val() + '\n Airport : '+$('#airport').val() + '\n Airline : '+$('#airline').val() + '\n Flight # : '+$('#fnumber').val() + '\n Stops : '+$('#hstops').val() + '\n Stops Info : '+$('#info').val() + '\n Passengers : '+$('#passengers').val() + '\n Luggages : '+$('#luggages').val()+ '\n Car Seat : '+$('#seat').val()+ '\n Drop-Off Street : '+$('#dostreet').val() + '\n Drop-Off City : '+$('#docity').val()+ '\n Drop-Off State : '+$('#dostate').val() + '\n Drop-Off Zip : '+$('#dozip').val() + '\n D.O Airport : '+$('#doairport').val() + '\n D.O Airline : '+$('#doairline').val() + '\n Flight # : '+$('#dofnumber').val() + '\n Date : '+$('#calendar2').val()+ '\n Time : '+$('#rtime').val() + '\n Time : '+$('#rtime2').val() + '\n Time : '+$('#rtime3').val() + '\n Return Street : '+$('#rtstreet').val() + '\n Return City : '+$('#rtcity').val()+ '\n Return State : '+$('#rtstate').val() + '\n Return Zip : '+$('#rtzip').val() + '\n Return Airport : '+$('#rtairport').val() + '\n Return Airline : '+$('#rtairline').val() + '\n Return Flight # : '+$('#rtfnumber').val() + '\n Payment Type : '+$('#payment').val() + '\n Card Number : '+$('#creditcardno').val() + '\n Exp. Date : '+$('#expirydate').val() + '\n Exp. Date : '+$('#expirydate2').val() ; Also, if there is a way when this information gets e-mailed to me if I can put it in a table so it could come up more organized. Any help, tips, advice is appreciated. ALSO, check out my website and the form for yourself at http://www.greatlimoservice.com

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  • Decision region plot for neural network in matlab

    - by Taban
    I have a neural network trained with backpropagation algorithm. I also create data set (input and target) random. Now I want to plot a decision region where each region is marked with a red star or with a blue circle according to whether it belongs to class 1 or -1. I searched a lot but just find plotpc function that is for perceptron algorithm. What should I try now? Any link or answer really helps. Thanks

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  • How to Create Own HashMap in Java?

    - by Taranfx
    I know about hashing algorithm and hashCode() to convert "key" into an equivalent integer (using some mathematically random expression) that is then compressed and stored into buckets. But can someone point me to an implementation or at least data structure that should be used as baseline? I haven't found it anywhere on the web.

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  • Activation Function, Initializer function, etc, effects on neural networks for face detection

    - by harry
    There's various activation functions: sigmoid, tanh, etc. And there's also a few initializer functions: Nguyen and Widrow, random, normalized, constant, zero, etc. So do these have much effect on the outcome of a neural network specialising in face detection? Right now I'm using the Tanh activation function and just randomising all the weights from -0.5 to 0.5. I have no idea if this is the best approach though, and with 4 hours to train the network each time, I'd rather ask on here than experiment!

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  • jQuery Stop non-css animation

    - by Mark
    I'm trying to stop a non-css animation: http://jsbin.com/aqute4/4/edit Button 1 starts the animation nicely, totally lost on how to stop it though, since .stop() seems to need a DOM element... rather than a random object. Thanks in advance. PS: Original code comes from: http://james.padolsey.com/javascript/fun-with-jquerys-animate/

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  • IE8 Accordion menu is throwing out some weird bugs

    - by Qwibble
    I have an accordion side menu in my latest project that works in all modern browsers properly, apart from ie8. In Ie8, using the menu and clicking results in random padding and margins to be added and sometimes disappear for no apparent reason. I can't find any bit of jquery code that would potentially cause this to happen which is a pain. Even more confusing is the fact that this doesn't happen in Ie7 =S Can anyone here replicate this bug, and see what the problem is? Project Demo to view in ie8

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  • assistance required, hangman game.

    - by Phillip Gibson
    I am making a hangman game and am having trouble with part of it. I have selected a random word from a file, but I want to display the word as a series of undersocres __ and then match the letter chosen to a position in the undersocres. Can anyone help me? cout <<"1. Select to play the game\n"; cout <<"2. Ask for help\n"; cout <<"3. Select to quit the game\n"; cout << "Enter a selection: "; int number; cin >> number; while(number < 1 || number > 3 || cin.fail()) { if(cin.fail()) { cin.sync(); cin.clear(); cout << "You have not entered a number, please enter a menu selection between 1 and 3\n"; cin >> number; } else { cout << "Your selection must be between 1 and 3!\n"; cin >> number; } } switch (number) { case 1: { string word; string name; cout << " Whats your name? "; cin >> name; Player player(); ifstream FileReader; FileReader.open("words.txt"); if(!FileReader.is_open()) cout << "Error"; //this is for the random selection of words srand(time(0)); int randnum = rand()%10+1; for(int counter = 0; counter < randnum; counter++) { getline(FileReader, word, '\n'); } cout << "my word: " << word << "\n"; // get length of word int length; //create for loop for(int i = 0; i < length; i++) cout << "_"; //_ _ _ _ _ SetCursorPos(2,10); FileReader.close(); break;

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  • Hashes or tokens for "remember me" cookies?

    - by Emanuil Rusev
    When it comes to remember me cookies, there are 2 distinct approaches: Hashes The remember me cookie stores a string that can identify the user (i.e. user ID) and a string that can prove that the identified user is the one it pretends to be - usually a hash based on the user password. Tokens The remember me cookie stores a random (meaningless), yet unique string that corresponds with with a record in a tokens table, that stores a user ID. Which approach is more secure and what are its disadvantages?

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  • jQuery shifting blocks of content to top on click/toggle

    - by JEBR0
    I have blocks of content that are toggled on/off via jQuery and I want to have the most recent one clicked to shuffle to the top of the content area. There are 4 that can be enabled and if you do it in a random order, or even intended order, it is hard to tell which one you just opened if it's not in the view window. Here is the page for reference http://jonrcoulter.com/

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  • Green part in Visual Studio 2010

    - by Braveyard
    I am wondering what these greens things are in Visual Studio 2010. What are they for? They look pretty random but of course they have to have some meaning. Can any one tell me? At first glance they don't mean any thing to me. Picture 1: Picture 2:

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  • Sequential (comb) GUIDs for Oracle

    - by Eyvind
    We are in the process of switching from the C# Guid.NewGuid() random-ish guid generator to the sequential guid algorithm suggested in this post. While this seems to work well for MS SQL Server, I am unsure about the implications for Oracle databases, in which we store guids in a raw(16) field. Does anyone have any insight as to whether this algorithm would be good for creating sequential guids for Oracle as well as for MS SQL Server, or if a different variant should be used. Thanks!

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  • B-trees, databases, sequential inputs, and speed.

    - by IanC
    I know from experience that b-trees have awful performance when data is added to them sequentially (regardless of the direction). However, when data is added randomly, best performance is obtained. This is easy to demonstrate with the likes of an RB-Tree. Sequential writes cause a maximum number of tree balances to be performed. I know very few databases use binary trees, but rather used n-order balanced trees. I logically assume they suffer a similar fate to binary trees when it comes to sequential inputs. This sparked my curiosity. If this is so, then one could deduce that writing sequential IDs (such as in IDENTITY(1,1)) would cause multiple re-balances of the tree to occur. I have seen many posts argue against GUIDs as "these will cause random writes". I never use GUIDs, but it struck me that this "bad" point was in fact a good point. So I decided to test it. Here is my code: SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE TABLE [dbo].[T1]( [ID] [int] NOT NULL CONSTRAINT [T1_1] PRIMARY KEY CLUSTERED ([ID] ASC) ) GO CREATE TABLE [dbo].[T2]( [ID] [uniqueidentifier] NOT NULL CONSTRAINT [T2_1] PRIMARY KEY CLUSTERED ([ID] ASC) ) GO declare @i int, @t1 datetime, @t2 datetime, @t3 datetime, @c char(300) set @t1 = GETDATE() set @i = 1 while @i < 2000 begin insert into T2 values (NEWID(), @c) set @i = @i + 1 end set @t2 = GETDATE() WAITFOR delay '0:0:10' set @t3 = GETDATE() set @i = 1 while @i < 2000 begin insert into T1 values (@i, @c) set @i = @i + 1 end select DATEDIFF(ms, @t1, @t2) AS [Int], DATEDIFF(ms, @t3, getdate()) AS [GUID] drop table T1 drop table T2 Note that I am not subtracting any time for the creation of the GUID nor for the considerably extra size of the row. The results on my machine were as follows: Int: 17,340 ms GUID: 6,746 ms This means that in this test, random inserts of 16 bytes was almost 3 times faster than sequential inserts of 4 bytes. Would anyone like to comment on this? Ps. I get that this isn't a question. It's an invite to discussion, and that is relevant to learning optimum programming.

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  • Send activation email to user

    - by Martin
    How would I do to check if a email actially exists? Cant understand how sites do to send mails with a unique link that the users clicks to validate that he is the owner of email =/ Make a 2 new columns called activationkey and activated and store some random string, send an email with the activationkey, and update the users activated =1 that match that activation link register.php?a=activate&key=9cdfb439c7876e703e307864c9167a15 Any better ideas?

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  • Little CSS problem with Auto height and nested div's

    - by GeekDrop.com
    So I'm finally learning my way around CSS more and have run into a small problem. I have a container div, with a few divs inside of it, one of them is a bit if text (which can be a random height) and an image that will have a MAX height of 200px. I am using a dotted/colored background behind them that needs to auto expand to the height of whichever is the tallest, either the text or the image. Right now when i use height:auto on the container div it works perfect for the random height text: Example Screenshot But it's only adjusting according to the text's height; if the image is taller than the text, the image overflows the bottom of the background dotted/colored box. Example Screenshot The CSS I'm using currently is this: h1 div#like_detailed { margin: 0; font-size: 1.1em; width: 700px; } #details-image img { border: none; clear: left; float: right; margin: -45px 0 0 0; max-height: 200px; padding: 0 7px 0 10px; } #deets-container { background-color: #FEF; border: #190AE7 1px dotted; height: auto; margin-top: 0; margin-bottom: 30px; padding-top: 10px; padding-right: 10px; padding-left: 10px; padding-bottom: 0; } And the HTML for it is this: <div id="deets-container" class="rounded"> <!-- Button --> <div class="likebtnframe">(some code)</div> <!-- Button --> <div class="tweetbtnframe">(some code)</div> <!-- Button --> <ul id="share"> <li><a name="share">(some code)</a></li> </ul> <!-- Submitted By --> <div class="submitter_detailed"><span class="submitter-color smalltext">(some code)</span> (some code)</div> <!-- Image --> <div id="**details-image**">(some code)</div> <!-- Like / Quote --> <h1 id="**like_detailed**">(some code)</h1> </div> I have a feeling this is pretty easy but I'm running out of time to sort it out on my own. Anyone?

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