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  • Splitting a double in two, C#

    - by Stacey
    I'm attempting to use a double to represent a bit of a dual-value type in a database that must sometimes accept two values, and sometimes accept only one (int). So the field is a float in the database, and in my C# code, it is a double (since mapping it via EF makes it a double for some reason... ) So basically what I want to do .. let's say 2.5 is the value. I want to separate that out into 2, and 5. Is there any implicit way to go about this?

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  • dynamically double image size

    - by Edan Duarte
    I have an embarrassingly simple question: How can I display an image at double its size without hard coding the width and height attributes? Here's what I tried, but I ended up having to just enter 1000 for width and height. Is something wrong with my function? Thanks! <img onload="double(self.id);" name="bigPic" id="bigPic" src="album1.jpg" height="1000" width="1000"/> function double(id) { var img = document.getElementById(id); var dblWdth = img.width * 2; var dblHt = img.height * 2; img.height = dblHt; img.width = dblWdth; }

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  • Graphics card initialisation problems when booting - requires a "double" boot

    - by DMA57361
    Problem Outline When booting from cold (and my machine is disconnected from main power when off, but leaving it connected doesn't help) the graphics card (single PCI-e card GeForce 460) will not initialise on the first boot, leaving me with the motherboards on-board graphics (which kick in automatically if no PCI-e card is found). However, if I restart the computer - normally I do this by powering it off just after the numlock lights up on the keyboard (ie, just after POST/BIOS and before Windows takes over), wait for the system to whirr down, and power up again - the graphics card will work correctly. Once double-booted in this matter the system seems to work correctly - with no noticeable problems. This is reproducible every time I try to boot - it has been working like this for about a month now. Background Information Sept 2010 - I suffered a hardware malfunction (crashes in Windows and graphics corruption on BIOS screens). By way of spare hardware I determined that replacing the PSU removed the issue, so I replaced the PSU with a brand new one of slightly higher power (460W replaced with 500W). Oct 2010 - The problem resurfaced. I purchased a new graphics card (GeForce 460), which removed the problem. The new graphics card immediately started having the boot initialisation problems mentioned. I presumed there was a motherboard fault all along, but because the system worked once booted, and I was temporarily out of spare money, I left the system alone and continued to use it. Early/Mid Dec 2010 - In the space of 5 days I recieved 3 instances of hard drive corruption (seemlingly fixed by chkdsk and sfc in each case...). Since I was already under the impression the motherboard was faulty, I purchased a new one ASAP, this also required new RAM (as I dropped from 4 slots to 2 and didn't want to drop mem quantity). Past 3-4 weeks - With a brand new PSU, Graphics Card, Motherboard and RAM I'm suffering the problem outlined above. So, what could be causing this and how do I can resolve it? Additional Notes Once double-booted the system seems to work entirely correctly. The graphics card problem has occured on two entirely different motherboards. I do not have the opportunity to test the graphics card in a different computer (I've only the old motherboard, which is dubious, or a really old desktop that still has an AGP port). Under load (ie, modern games for long enough for temperatures to plateau) the system remains stable and performs as expected. The software that came with the new motherboard and SpeenFan both report all voltages and temperatures are within nominal bounds, when idle and when under load. I've looking over the BIOS settings for my motherboard multiple times and can find nothing that helps. This system is configured to run with everything at standard levels - no overclocking. I've tried booting the system with only the mobo and graphics card connected (thinking maybe my new PSU was too weak for the new gfx card, even though it meets the quoted PSU requirements for the card) but the same problem persists (and really if the PSU was weak I'd have problems with the system under load). When the gfx card does not initialise the fan on its cooling unit is running, possibly slower than otherwise - but this measurement is by eye and so unreliable.

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  • Postback event not firing on FIRST button click..

    - by ClarkeyBoy
    Hi, I have a form which accepts two arguments. The first one is mode - this is either view, new or edit. If it is new then the second argument is type - this is either range, collection or design. When set to new, and the type is valid, a new instance of that type is created and the data from the form is added to it. The item (range, collection or design) then validates the data. If any of the data is invalid then it throws an error, and this error is displayed at the top of the form telling the user why it is invalid. A variable, _Databind, is set to false so that it does not change the data input by the user (in the form fields). The button used to submit the button is called btnSave, and is created in the html source. The click event is wired up in the form Protected Sub Blah(sender, e) Handles btnSave.Click. Strangely, whenever I edit an item that already exists the form submits fine the first time - the click event is fired. However when in "new" mode I have to click the button twice to fire the event. It also blanks all the form fields out on first click. I have even put a Response.Write("Hello World") line at the start of the click event - this is not being output on first click when adding a new item either. It is on first load when the mode is set to edit however. Does anyone have any ideas as to what is causing it to behave this way? Thanks in advance for any help. Regards, Richard

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  • Why won't .attr('checked','checked') set?

    - by Jason
    I have the following snippet of code (I'm using jQuery 1.4.2): $.post('/Ads/GetAdStatsRow/', { 'ad_id': id }, function(result) { $('#edit_ads_form tbody').prepend(result); $(result).find('td.select-ad input').attr('checked','checked').click(); }); Assume that the post works correctly and returns a correct pre-built <tr> with some <td>s. Here's the weirdness: the $(result).find() line finds the correct input (which is a checkbox, as it's the only input in the cell) and runs the chained click() function correctly, but it REFUSES to set the box as checked, which I need to happen. Here's a crazy twist, too... when I get super specific and change the $(result).find() line to this (the id of the checkbox): $('#ad_' + id).click(); It checks the box, but doesn't run the click() function! If I set it to $('#ad_' + id).attr('checked','checked').click(); it runs the click function as though the box were checked, but the box remains unchecked, and if I do $('#ad_' + id).click().attr('checked','checked'); it does nothing at all. What in the world could be the matter with this? I'm running out of hair.... Thanks!

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  • Find max integer size that a floating point type can handle without loss of precision

    - by Checkers
    Double has range more than a 64-bit integer, but its precision is less dues to its representation (since double is 64-bit as well, it can't fit more actual values). So, when representing larger integers, you start to lose precision in the integer part. #include <boost/cstdint.hpp> #include <limits> template<typename T, typename TFloat> void maxint_to_double() { T i = std::numeric_limits<T>::max(); TFloat d = i; std::cout << std::fixed << i << std::endl << d << std::endl; } int main() { maxint_to_double<int, double>(); maxint_to_double<boost::intmax_t, double>(); maxint_to_double<int, float>(); return 0; } This prints: 2147483647 2147483647.000000 9223372036854775807 9223372036854775800.000000 2147483647 2147483648.000000 Note how max int can fit into a double without loss of precision and boost::intmax_t (64-bit in this case) cannot. float can't even hold an int. Now, the question: is there a way in C++ to check if the entire range of a given integer type can fit into a loating point type without loss of precision? Preferably, it would be a compile-time check that can be used in a static assertion, and would not involve enumerating the constants the compiler should know or can compute.

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  • Round-twice error in .NET's Double.ToString method

    - by Jeppe Stig Nielsen
    Mathematically, consider for this question the rational number 8725724278030350 / 2**48 where ** in the denominator denotes exponentiation, i.e. the denominator is 2 to the 48th power. (The fraction is not in lowest terms, reducible by 2.) This number is exactly representable as a System.Double. Its decimal expansion is 31.0000000000000'49'73799150320701301097869873046875 (exact) where the apostrophes do not represent missing digits but merely mark the boudaries where rounding to 15 resp. 17 digits is to be performed. Note the following: If this number is rounded to 15 digits, the result will be 31 (followed by thirteen 0s) because the next digits (49...) begin with a 4 (meaning round down). But if the number is first rounded to 17 digits and then rounded to 15 digits, the result could be 31.0000000000001. This is because the first rounding rounds up by increasing the 49... digits to 50 (terminates) (next digits were 73...), and the second rounding might then round up again (when the midpoint-rounding rule says "round away from zero"). (There are many more numbers with the above characteristics, of course.) Now, it turns out that .NET's standard string representation of this number is "31.0000000000001". The question: Isn't this a bug? By standard string representation we mean the String produced by the parameterles Double.ToString() instance method which is of course identical to what is produced by ToString("G"). An interesting thing to note is that if you cast the above number to System.Decimal then you get a decimal that is 31 exactly! See this Stack Overflow question for a discussion of the surprising fact that casting a Double to Decimal involves first rounding to 15 digits. This means that casting to Decimal makes a correct round to 15 digits, whereas calling ToSting() makes an incorrect one. To sum up, we have a floating-point number that, when output to the user, is 31.0000000000001, but when converted to Decimal (where 29 digits are available), becomes 31 exactly. This is unfortunate. Here's some C# code for you to verify the problem: static void Main() { const double evil = 31.0000000000000497; string exactString = DoubleConverter.ToExactString(evil); // Jon Skeet, http://csharpindepth.com/Articles/General/FloatingPoint.aspx Console.WriteLine("Exact value (Jon Skeet): {0}", exactString); // writes 31.00000000000004973799150320701301097869873046875 Console.WriteLine("General format (G): {0}", evil); // writes 31.0000000000001 Console.WriteLine("Round-trip format (R): {0:R}", evil); // writes 31.00000000000005 Console.WriteLine(); Console.WriteLine("Binary repr.: {0}", String.Join(", ", BitConverter.GetBytes(evil).Select(b => "0x" + b.ToString("X2")))); Console.WriteLine(); decimal converted = (decimal)evil; Console.WriteLine("Decimal version: {0}", converted); // writes 31 decimal preciseDecimal = decimal.Parse(exactString, CultureInfo.InvariantCulture); Console.WriteLine("Better decimal: {0}", preciseDecimal); // writes 31.000000000000049737991503207 } The above code uses Skeet's ToExactString method. If you don't want to use his stuff (can be found through the URL), just delete the code lines above dependent on exactString. You can still see how the Double in question (evil) is rounded and cast.

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  • Jquery dynamic button : how to bind to exisitng click event by class

    - by omer bach
    I have a click event triggered by the class selector inside the jquery ready scope: $(".testBtn").click(function() { alert("This Works"); }); This works fine for static buttons how ever this doesn't work for dynamic buttons which are added upon clicking the button with "addRowBtn" id. I'm guessing that it has something to do with that the button is created after the event is registered but still the new button has the 'testBtn' class so it makes sense it should work. Any idea what am i doing wrong and how to make the dynamic buttons registered to the class selector click event? Here is the whole code, you can copy and paste into an html, click the 'add button' and try to click the added buttons. you'll see nothing happens. <html> <head> <script src='http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'></script> <script src='http://ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js'></script> <script> $(function() { $(".addRowBtn").click(function() { $("#mainTable tr:last").after("<tr><td><button class='testBtn'>NotWorking</button></td></tr>"); }); $(".testBtn").click(function() { alert("This Works"); }); }); </script> </head> <body> <table id="mainTable"> <button class="addRowBtn">Add button</button> <tr><th>Testing</th></tr> <tr><td><button class='testBtn'>Working</button></td></tr> </table> </body> </html>

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  • Assign click event to addon icon on navigation bar

    - by Charsee
    We have created a chrome extension for our app. Where we call a METHOD from a "js file" on CLICK event of the "extension icon" placed on the navigation bar. For this we use message passing between the app.js (file containing the METHOD to be called on icon click) and background.html (using a js file included in this html). The script used to pass message is:(from background.html) chrome.browserAction.onClicked.addListener(function (tab) { chrome.tabs.sendMessage(tab.id, "showPopup"); }); and to listen the message :(in app.js) chrome.extension.onMessage.addListener(function(request) { if (request === "showPopup") { showPopup(); } }); The click event works as expected. But now we want to do same thing in mozilla extension. and we can't pass message to app.js on the click of the icon,so that it can execute the containing methods. We have also added the app.js using pageMod, something like this exports.main = function(options, callbacks) { pageMod.PageMod({ include: ["*"], contentScriptWhen: 'start', contentScriptFile: [data.url('jquery-1.7.1.min.js'),data.url('app.js')] }); createAndAddNavBarButton(); }; function createAndAddNavBarButton() { var navBar = document.getElementById('nav-bar');//assume document has been defined if (!navBar){return;}; var nbBtn = document.createElement('navbaricon'); nbBtn.setAttribute('id', 'navButton'); nbBtn.setAttribute('image', data.url('icon_16.png')); nbBtn.onclick = function(){ showPopup(); return true; } navBar.appendChild(btn); } But the click event does nothing and showPopup() is undefined. When a new page loads event associated with it in the app.js executes without any error but the click event doesn't work. Is there a method from where we can assign click event directly to this icon, as we have done in the case of chrome extension.

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  • Dynamic change .click value Jquery IE issue.

    - by user326100
    Hello guys.. it's i first time i'm asking here. Sorry if the answer is available already. I have a very small jQuery script that canges the paramether for onclick attr on a DIV. IT works like as right and left arrows for some content in the middle. BAsically i set the onclick="foo(1)" then when get clicked sld change the value 1 to 2, and keep changing everytime i click. on jQuery functio i'm using: $("#v_arrow_r").attr('onclick','').unbind().click(newclick_next); it works like a charm on FF and Chrome, but does not work on IE !!!! Argh... here the the code: if (start == 24) { var a = 0; var b = 0; } else { var a = start-6; var b = start+6; } next = "home_featured_videos(" + b + ");"; newclick_next = eval("(function(){"+next+"});"); prev = "home_featured_videos(" + a + ");"; newclick_prev = eval("(function(){"+prev+"});"); $('#video-module').css('background',''); $('#video-module').html(response); $("#v_arrow_l").attr('onclick','').unbind().click(newclick_prev); $("#v_arrow_r").attr('onclick','').unbind().click(newclick_next); The html: //CONTENT So like i said.. i define the attr onclick when page open. It work well on IE. but when i click the arrow and call the function the oncli is set to null and i add the function to .click. IE stop working. the click is dead. If anybody have idea why this is happening. Thanx in advance. Kind Regards Varois

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  • Dynamic added elements double effect after page transition

    - by Emil Moe
    I have added dynamic from jQuery in my code, but when I go back one page and return to the page where the 's are added and you press them, they somehow click twice now. I have tried with an alert('something'); when I click: $(document).on('click', '#products a', function() { alert('something'); } And it's shown twice when you return to the page. I have tried $('#products a').remove(); When you click the 'Back' button, because I thought all elements where added twice, but that made no difference. I don't have anything around these lines, maybe I need $(document).ready(); or something with pageinit?

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  • Access folder right-click from inside the folder in Windows 7

    - by BrenBarn
    In Windows XP, if you had a folder open in Explorer, you could access the right-click context menu of a folder by right-clicking the folder icon in the titlebar of the Explorer window. In Win7 this no longer works. Right-clicking the background of the open folder, or right-clicking the folder icon in the info pane at the bottom, does not give the same context menu; there are items that are not in these menus, but are in the menu when I right-click on a folder from outside it. Given that I have a folder open in Explorer, how can I, without navigating out of the folder, access the same right-click context menu that I would get if I navigated to the parent folder and right-clicked my target folder?

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  • Auto-responder rule in Outlook 2010 produces double signature (but only to certain emails)

    - by Austin ''Danger'' Powers
    I have set up an auto-responder in Outlook 2010 using a custom template, as a staff member will be on vacation for 6 weeks. It works perfectly, apart from the fact certain people receive two signatures at the bottom of the message instead of one. When reviewing the "sent" folder, there is no sign of double signatures. In the custom template, there is only 1 copy of the signature. Signatures are set to be applied automatically to new messages or replies- however, if I remove the signature from the template, then it seems no one receives a response with the signature. People sending from Hotmail accounts do not receive a duplicate signature. Gmail users do see a duplicate signature. Does anyone have any idea what could be causing this?

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  • Right Drag on Mac

    - by Mafuba
    How do you perform a right-click-drag operation on Mac hardware? I know you can right click, but there does not seem to be a right click drag gesture. In my specific case I am using a MacBook Pro, and I am in a Windows environment. The question is more than just theoretical. I ask because there is functionality that uses this gesture, at least in the Windows world. For example, right now I'm trying to do a copy and rename in the TortoiseSVN repository browser. I think there are things you can do with a right drag in graphical editors like Photoshop as well. In windows you get a context menu when you right drag files. For those familiar with the software, I know I can do it in other ways; I'm not looking for workarounds to specific problems.

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  • MacBook Pro Trackpad freeze / holds click on its own

    - by lajuette
    My MacBook Pro's Trackpad shows an annoying behavior in the last few days. I think the only relevant thing that changed is the firmware for the Trackpad. An update has been distributed via Software Update a few days ago. Sometimes when i click somewhere the Trackpad won't recognize the mouseup, i.e. hold the click on its own. Clicking again seems to stop the holding and issue a new mousedown, but then again, no mouseup I.e. when i click on a file on the desktop the file will be dragged. But i can't stop dragging! Clicking in a browser or text document will select the text/images. Did anyone notice similar behavior? Any ideas or fixes?

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  • Missing Right Click Menu Text After Sleep

    - by petebob796
    I have a laptop running Windows 7 and regularly close the lid to put it in sleep mode. Recently after resuming from sleep if I go to access the right click menu in the windows shell when I hover over the menu items the text disappears and doesn't re-appear without closing the menu and right clicking again. The only way to fix this is to restart. Any ideas what could be causing this? I have an nvidia 8600m gs graphics card which had a BSOD problem a while back at boot up but since I underclocked it slightly it has been running fine and I experience no other issues but this. This only affects right click menus that are part of the windows so not any programs right click menu. It's not a major problem just strange and a little annoying.

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  • Windows 7 'All Programs' folders self-close on right-click

    - by Madmanguruman
    Odd issue on my Windows 7 Professional (32-bit) system. If I click on the Start 'orb' then navigate to 'All Programs', then navigate to any of the folders that appear at the bottom of the list (like Accessories) and left-click, the folder contents expand with no issue. If I right-click, the context menu appears for half-a-second or so, then the popup goes away and the entire start menu dismisses. I'm not sure how to debug this issue - I'm considering using Autoruns to try and disable things hooked into the shell one-by-one. Is there a way to use a tool like Process Explorer to narrow down the process that's actually dismissing the menus?

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  • Script or Utility to convert .nab to .csv without importing double entries in Outlook

    - by Chris
    Currently our environment is migrating from Groupwise 7 to Outlook 2003 and we have multiple users with mission critical outside contacts in their frequent contacts that will have to be imported in Outlook. Currently our only solution is to export GW contacts to a .nab, import to excel to scrub out the contacts in our own domain (to avoid double entry) and convert to .csv. This current solution will require a lot of man hours for hand holding because most of our users are not technically savvy AT ALL and are frankly too busy to do this themselves. Anyone know of any kind of tool or script to assist with this?

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  • Custom command in right-click menu not working

    - by Luke
    I have added, via the registry, a right click menu option for all filetypes which is supposed to get the MD5 checksum for a file. HKEY_CLASSES_ROOT*\shell\Checksum - Default: Get Checksum and HKEY_CLASSES_ROOT*\shell\Checksum\command - Default: checksum.cmd "%1" checksum.cmd simply clears the screen, calls fciv.exe using %1 and then pauses. Unfortunately, whilst the option "Get Checksum" appears correctly in the right click menu, it doesn't perform the right action when clicked. When I click it an "Open With" dialog opens, which is of course not what I want. Both checksum.cmd and fciv.exe are in the PATH. checksum.cmd: @echo off cls fciv.exe %1 pause Anybody know what's going on?

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  • If I double my ram on a x86 processor, does that double the ram I can use for each individual process?

    - by Derek Reitz
    I don't understand how 32-Bit OS's use RAM on a per process basis. I've read the max RAM my x86 processor running a 32-bit OS can use is 2^32 = 4gb; but that's just for one process, right? 3DS Max keeps crashing, but it typically can never use more than 2GB of RAM before it crashes, if I increase my RAM from 4-8GB, would that double how much RAM I can use for each individual process or actually cause no change in my performance? Also would increasing my VRAM and getting a better graphics card increase the extent to which individual programs can preform? Lastly, is there any way to upgrade a 86-bit processor to be able to run a 64-bit OS? I feel like it would be ridiculous to sell modern processors that are capped at 4GB of RAM? Thanks. Quad-Core Intel i7 Q 720 @ 1.6GHz

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  • Seeing double-cursor in 'recursive RDP'

    - by John
    I'm using a Virtual PC VM on my PC to connect to a remote PC using RDP over a VPN. It works just fine except that in the RDP session, I often see a double mouse cursor... I get a standard mouse-arrow and the context-specific cursor such as a caret or hourglass. It's not a big problem but rather annoying and I wondered if there's any way to fix it, or at least understand where it comes from? Is it because I'm effectively running one RDP session from inside another? My host PC runs W7, my local VM runs XP, and the remote PC access using RDP is W7. Thankyou for any help.

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  • Mouse will not click and drag

    - by C. Ross
    My mouse is currently having trouble with Click and Drag. It moves well, it clicks well (including double click); but it will not click and drag correctly. When dragging it just drops the highlighted area almost immediately after starting it. The operating system is Windows 7 x6, and the mouse is a Microsoft 5 Button laser wired model that's approximately 3 years old. The problem is relatively new, but has been happening consistently for several weeks through several reboots. Is there anything to try besides buying a new mouse?

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  • Why Is ToString() Rounding My Double Value?

    - by user163757
    How do I prevent my double value from being rounded when converting to a string? I have tried both Convert.ToString and ToString() with the same result. For example my double may look something like 77.987654321, and the two strings conversions convert to to 77.98765. I need to keep the precision of the value as is.

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