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  • Javascript : random number between variables issue

    - by Mayhem
    I've seen the other examples on this site but I just can't get it to work. I'm trying to generate a random number between 2 user input variables on a form. The numbers will always be positive numbers. min = document.getElementById('min').value; max = document.getElementById('max').value; waitTimer = Math.floor(Math.random() * (max - min + 1)) + min; When min = 5 / max = 10, waitTimer is sometimes returning results like 2, 4 and 28 and so on. What am I doing wrong?

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  • JQuery multiple-choice quiz script: how to ensure the correct answer is available?

    - by DavidR
    I have a function. I pass to it an object with a list of questions and answers. I generate a random number from a range equal to the number of questions in the object. The script check to see if that question has been asked, and if not, it asks it, the correct answer is then passed to a variable correct. I want to give 4 possible answers, each one randomly selected from the list of possible answers. I have this. I just want to know what is the best way to ensure that the correct answer is placed in the list. So far, this is what I have: it puts four answers into four targeted boxes. I want to ensure that the correct answer is in a randomly selected box. function getRandom(limit) { return Math.floor(Math.random() * limit ) } $("#answers > .answer").each(function(i){ r = getRandom(total_questions); $(this).text(answers[r]) });

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  • How to include the right reference in C# using the "Browser" tab

    - by vizcaynot
    Hello: I am working on VS2010 C# and I want to add a .dll reference compiled under VS2008; this .dll exists in 2 versions: Debug and Release. The .dll is not under .NET, COM or projects tabs, so I only have the "browser" tab to add the .dll to the reference. My question is: How can I indicate to VS to take the release .dll version when I compile in the release mode and to take the debug .dll version when I compile in the debug mode? Thanks.

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  • I'm getting the following error ''expected an indented block'' Where is the failing code?

    - by user1833814
    import math def area(base, height): '''(number,number) -> number Return the area of a wirh given base and height. >>>area(10,40) 200.0 ''' return base * height / 2 def perimeter(side1, side2, side3): '''(number,number,number) -> number Return the perimeter of the triangle with sides of length side1,side2 and side3. >>>perimeter(3,4,5) 12 >>>perimeter(10.5,6,9.3) 25.8 ''' return (side1 + side2 + side3) def semiperimeter(side1, side2, side3): return perimeter(side1, side2, side3) / 2 def area_hero(side1, side2, side3): semi = semiperimeter(side1, side2, side3) area = math.sqrt((semi * (semi - side1) * (semi - side2) * (semi - side3)) return area

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  • I'm a PHP programmer, how easy will it be to "master" c++?

    - by ThinkingInBits
    I've been a PHP programmer for 8 or so years, I'm familiar with OOP and try to consider best practices whenever programming. I would like to pick up C++ to possibly enter the 'game development' field, where now I'm doing web dev. I'm not a school person, but was wondering what people think about self-taught math to complement learning c++ for game dev. The last math course I took was algebra 2. Should I start delving myself into pre-calculus? Are there any other suggestions you may have to ease the process?

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  • How to write into registry using VC++ 2010 ?

    - by rajivpradeep
    HKEY CURRENT USER \software \microsoft\ windowsNT \CurrentVersion\ AppCompatFlags "application path" = RUNASXP3 I want to create an application which runs in default XP mode on windows 7 when i run the application so, i want to write into the registry as in the link above. I am building the application in VC++ 2010, i want to write into the above registry through the program, so that when i run the program it runs in XP mode. How to do this..?

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  • android layout-land and screen-rotation handling

    - by davs
    I have layouts for portrait mode (in folder layout) and for landscape one (in the folder layout-land). This screen is located under one of the tabs, so I had to handle screen rotating (after screen has been rotated, no default screen restart occurs). I would like to update view from 'layout-land' when screen rotates to landscape mode and from 'layout' when screen rotates to portrait one. How can I do this?

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  • How to find hidden properties/methods in Javascript objects?

    - by ramanujan
    I would like to automatically determine all of the properties (including the hidden ones) in a given Javascript object, via a generalization of this function: function keys(obj) { var ll = []; for(var pp in obj) { ll.push(pp); } return ll; } This works for user defined objects but fails for many builtins: repl> keys({"a":10,"b":2}); // ["a","b"] repl> keys(Math) // returns nothing! Basically, I'd like to write equivalents of Python's dir() and help(), which are really useful in exploring new objects. My understanding is that only the builtin objects have hidden properties (user code evidently can't set the "enumerable" property till HTML5), so one possibility is to simply hardcode the properties of Math, String, etc. into a dir() equivalent (using the lists such as those here). But is there a better way?

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  • Is there a way to remove Alt-character shortcuts from controls at runtime?

    - by Dan Neely
    I have a dialog with a number of Alt-Letter shortcuts on labels for textboxes/etc. This dialog can present data in either an editable or a read-only mode. I've received a request to hide the underlines for the shortcuts if the dialog is in read only mode. Other than editing the label text at runtime (ugh) is there any way to remove them? If you don't know what I'm referring to by alt-Letter shortcuts see this question.

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  • App rejected due to "iPhone Apps must also run on iPad without modification, at iPhone resolution, and at 2X iPhone 3GS resolution"

    - by sunny
    My app got rejected by the apple because of the reason "iPhone Apps must also run on iPad without modification, at iPhone resolution, and at 2X iPhone 3GS resolution".Apple suggested that "to support the iPad 3GS 2X, and this issue is usually resolved through settings in "compatibility" mode. "no black bar's or borders"".So,my question is how to set and run the app in compatibility mode.Any one having this issue please help on this issue.I have no idea to go forward. Please any suggestions and help thanks in advance.

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  • jquery dynamic jcarsoul make it as autorun

    - by Bharanikumar
    Hi , Am using this jquery plugin]1 How to change the click mode to automatically run mode , Present scenario , When u click NEXt it show the next three image, When u click BACK It shows the previous three images , I want to change this scenario to Whe loads , the plugin should start running(image) , Also i need the NEXT and BCK button , When user click the back button , then it show show previous three image and run image toward back, Is it possible in this ? Thanks

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  • Please explain how Trial Division works for Primality Test

    - by mister_dani
    I came across this algorithm for testing primality through trial division I fully understand this algorithm static boolean isPrime(int N) { if (N < 2) return false; for (int i = 2; i <= Math.sqrt(N); i++) if (N % i == 0) return false; return true; } It works just fine. But then I came across this other one which works just as good but I do not fully understand the logic behind it. static boolean isPrime(int N) { if (N < 2) return false; for (int i = 2; i * i<N; i++) if (N % i == 0) return false; return true; } It seems like i *i < N behaves like i <= Math.sqrt(N). If so, why?

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  • Creating a textarea with auto-resize

    - by DisgruntledGoat
    There was another thread about this, which I've tried. But there is one problem: the textarea doesn't shrink if you delete the content. I can't find any way to shrink it to the correct size - the clientHeight value comes back as the full size of the textarea, not its contents. The code from that page is below. I'd appreciate any help or pointers. function FitToContent(id, maxHeight) { var text = id && id.style ? id : document.getElementById(id); if ( !text ) return; var adjustedHeight = text.clientHeight; if ( !maxHeight || maxHeight > adjustedHeight ) { adjustedHeight = Math.max(text.scrollHeight, adjustedHeight); if ( maxHeight ) adjustedHeight = Math.min(maxHeight, adjustedHeight); if ( adjustedHeight > text.clientHeight ) text.style.height = adjustedHeight + "px"; } } window.onload = function() { document.getElementById("ta").onkeyup = function() { FitToContent( this, 500 ) }; }

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  • The return value should be a list but doesn't return as expected?! - Python newbie

    - by user1432941
    Hi this must be a very simple solution that has eluded me this last hour. I've tried to build this test function where the return value of the test_cases list should match the values in the test_case_answers list but for some reason, test case 1 and test case 2 fail. When i print the return values for the test cases they return the correct answers, but for some reason test case 1 and test case 2 return False. Thanks for your help! import math test_cases = [1, 9, -3] test_case_answers = [1, 3, 0] def custom_sqrt(num): for i in range(len(test_cases)): if test_cases[i] >= 0: return math.sqrt(test_cases[i]) else: return 0 for i in range(len(test_cases)): if custom_sqrt(test_cases[i]) != test_case_answers[i]: print "Test Case #", i, "failed!" custom_sqrt(test_cases)

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  • Is it a header file or library? in a makefile

    - by gccinac
    I already know the differences between a header file and a library. However, when I'm writing my makefile, I have some difficulties on deciding if I should put something as a dependency of the file or just at the linking rule. For example: I have 2 simple files: main.c: #include <stdio.h> main(){ printf("this is the sine or 90"); sinus(90); } and func.c: #include <math.h> sinus(int num){ return sin(num); } and my makefile is: main: main.o func.o gcc main.o func.o -lm -o main func.o: func.c main.o: main.c Well, my question is why this makefile works and this one doesn't: main: main.o func.o gcc main.o func.o -lm -o main func.o: func.c math.h main.o: main.c

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  • Display random image when page loads without utilizing onload in the body tag

    - by Peachy
    I'm trying to create a fairly simple piece of JavaScript that displays a random image from an array each time the page loads. I need to figure out a way to get this running without adding code to the body tag. Is there a way to accomplish this without, say, an onload funtion placed in the body tag? Here's what I have that relies on the onLoad: ImageSwitch=new Array(); ImageSwitch[0]='1.jpg'; ImageSwitch[1]='2.jpg'; ImageSwitch[2]='3.jpg'; ImageSwitch[3]='4.jpg'; function swapImage() { document.getElementById("theImage").setAttribute("src", ImageSwitch[ Math.round(Math.random()*3)]) } Any alternative ideas to accomplish this? Thanks.

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  • Adding Content to a Randomized Background

    - by user2903815
    On refresh my background image changes. I need to add a header to change with each background. How would I add an h1 tag to the php. I am unfamiliar with php but I feel like this should be an easy fix. Here's my script: <script type="text/javascript"> var bgcount = 3; function changebg() { var num = Math.ceil( Math.random() * bgcount ); document.body.background = 'bgs/'+num+'.jpg'; document.body.style.backgroundRepeat = "no-repeat"; document.body.style.backgroundAttachment = "fixed"; document.body.style.backgroundSize = "cover"; } </script> Thanks!

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  • like-vim emacs ruby indentation

    - by edbond
    ruby-mode from svn, looks equal to 1.1 version here is emacs indentation of hash User.all({ :joins => :account, :conditions => {:delete_at => nil} }) here is the same in vim User.all({ :joins => :account, :conditions => {:delete_at => nil} }) How to make emacs indent like vim in ruby-mode?

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  • Prevent debugging projects that are added as reference in Visual Studio

    - by DSWD
    I have a project that is auto generated. This project is referenced by my web app in visual studio. When i step through the code in debug mode the code from this project gets stepped into. Is there a way I can skip this code in debug mode. I can't use System.Diagnostics.DebuggerStepThroughAttribute since the code will get replaced every time my datasource changes. Thanks,

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  • How to paste in a new line with vim?

    - by static_rtti
    I often have to paste some stuff on a new line in vim. What I usually do is: o<Esc>p Which inserts a new line and puts me in insertion mode, than quits insertion mode, and finally pastes. Three keystrokes. Not very efficient. Any better ideas?

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  • Good Form for Random Number Generator?

    - by JackCJR
    I wanted to get a few opinions on doing a random number generator. I read through a couple different ways to do it and this is the way that I created after doing a little reading. Is it acceptable form? Any foreseeable issues? function master(){ function generate(){ var pickFrom= "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; var j = pickFrom.length; var i = Math.floor(Math.random()*j+1); //Generates a random number var code = pickFrom.charAt(i) //Picks a number based on what number was picked. document.write(code) } x = 1; while(x){ generate(); x--; } } master();

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  • Proper Translation of equation to C#

    - by Shykin
    I am trying to replicate this equation: Slope(b) = (NSXY - (SX)(SY)) / (NSX2 - (SX)2) in C# but I'm getting the following issue: If I make the average of X = 1 + 2 + 3 + 4 + 5 and the average Y = 5 + 4 + 3 + 2 + 1 it gives me a positive slope even though it is clearly counting down. If I place the same numbers into this calculator: http://www.easycalculation.com/statistics/regression.php It gives me a negative slope in the linked calculator with the same data. I'm trying to narrow down the reasons so is the following a proper translation from equation to C# code: Slope(b) = (NSXY - (SX)(SY)) / (NSX2 - (SX)2) to Slope (m) = ((x * avgX * avgY) - (avgX * avgY)) / ((x * Math.Pow(avgX, 2)) - Math.Pow(avgX, 2));

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