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  • IPhone geo tagging data (SQLite or CoreData)

    - by user267980
    Hi. I'm about to build an app that has a database of places that has a location (lon/lat) and i'm about to build the dataModel. Actualy the app is very simple and all i want is to be able to fetch all places around the user (say in a radius of 30miles). Is it better to user SQLite (is there any geo-spatial extension out there)? I'll have around 5000 places in the database and i'm wondering where i can ask a database without affecting performances.

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  • Our Narrow Slice – Looking at History from a Different Perspective

    - by Akemi Iwaya
    When we learn about places, people, and events from history, we are usually taught about them in separate chunks or blocks, making them ‘seem’ rather separate and/or disconnected from each other. Vsauce provides a new perspective about some famous people, places, and events from history that you may not have known about or thought of as simultaneous/connected. Our Narrow Slice [YouTube]     

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  • INI files or Registry or personal files

    - by Shirish11
    I want to save the configuration of my project. Which includes Screen size Screen Position Folder paths Users settings and so on. The standard places where you can save these are configuration values are: Registry INI files Personal files (like *.cfg) I would like to know how do you choose between these places? Also are there any pros & cons of using any of them?

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  • Free Windows Azure training in Reading, UK on the 25th of May for partners

    - by Eric Nelson
    The 6 weeks of Windows Azure training is full (500 registration in around a week) but it turns out we have a few places free on the 25th if you can make it to Reading. 14 places when I last checked (today, 5th May). Register now if you can make it. Workshop Outline Module 1: Windows Azure Platform overview Module 2: Introduction to Windows Azure Module 3: Building services using Windows Azure Module 4: Windows Azure storage Module 5: Building applications using SQL Azure Module 6: Introduction to .NET Services Module 7: Building applications using the .NET Service Bus

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  • OK, I have my database ready, now what's missing?

    - by fatherjack
    During the life of any database there will be times when the development makes a change that breaks functionality of an object somewhere else in the database. SQL Server does a good job in some places of making this impossible, or at least really difficult, but in other places there isn't even a murmur as you execute a script that will bring your system processes out in a nasty plague of error messages. Where it works. If you try to create a view based on a table or column that doesn't...(read more)

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  • How to re-mount a different partition as /home?

    - by Android Eve
    When I installed Ubuntu 10.04, I installed it on a single 16GB partition which includes /, /boot, /home etc. I have another partition on the system (ext3). It is easily accessible from the GNOME desktop Places menu: I just click that Filesystem HDD icon on the Places menu and it is automatically mount as '/media/1326f40a-45df-4ec'. How do I make that partition re-mount as /home instead? (permanently, that is)

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  • How to re-mount a different partition as /home on Ubuntu 10.04 ?

    - by Android Eve
    When I installed Ubuntu 10.04, I installed it on a single 16GB partition which includes /, /boot, /home etc. I have another partition on the system (ext3). It is easily accessible from the GNOME desktop Places menu: I just click that Filesystem HDD icon on the Places menu and it is automatically mount as '/media/1326f40a-45df-4ec'. How do I make that partition re-mount as /home instead? (permanently, that is)

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  • MS Access 2003 - Format a Number with Commas AND Auto-Decimal

    - by Emtucifor
    On a report I have a control which is bound to a column which can have up to 3 decimal places. I want the number to format with commas separating thousands and millions, but I also want the number of decimal places to be automatic, so that if there is no decimal portion then no decimal at all is shown. 1234.567 -> 1,234.567 1234.560 -> 1,234.56 1234.500 -> 1,234.5 1234.000 -> 1,234 General format will give me the auto decimal places but no commas. Standard format gives the comma but is fixed to 2 decimal places. Doing my own =Format(Number, "#,##0.#") leaves the decimal point in and doesn't align properly, with extra space on the right of the number. Do I have to write my own VB function to give the format I want? It seems silly that Access (apparently) can't do this out of the box. This also seems really horrible: =Replace(Replace(Replace(Replace(Replace( _ Format(Number, "#,##0.000") & "x", "0x", ""), "0x", ""), "0x, ""), ".x", ""), "x", "")

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  • JavaScript functions broke my page jumps?

    - by Mark
    Hi everybody, I'm trying to develop a personal website and running into some issues. At the top of my page I had a horizontal table that contained 6 different images (buttons) that linked to different sections of the page. I wanted to spice up the buttons with JavaScript and make the image of the button change onMouseOver and onMouseOut so I found a way to do so online with some JavaScript but the problem now is that the buttons no longer jump to the appropriate section of the page when using Google Chrome or Safari, but in IE 9 they still do work correctly... Here is my old code that worked properly: <html> ... <body> <center> <table border="1" style="color:#D80000;text-align:center"> <tr> <td> <a href="#about"><img src="images/aboutMe.png" alt="About Me"></a> </td> <td> <a href="#courses"><img src="images/courseList.png" alt="Courses"></a> </td> <td> <a href="#work"><img src="images/workHistory.png" alt="Work History"></a> </td> <td> <a href="#places"><img src="images/placesBeen.png" alt="Places I've Been"></a> </td> <td> <a href="#games"><img src="images/gamesPlay.png" alt="Games I Play"></a> </td> <td> <a href="#contact"><img src="images/contactMe.png" alt="Contact"></a> </td> </tr> </table> </center> ... </body> </html> Here is my new code that is now broken: <html> <head> ... <script type="text/javascript"> <!-- if (document.images) { <!-- Preload original Images --> var about_init= new Image(); about_init.src="images/aboutMe.png"; var courses_init= new Image(); courses_init.src="images/courseList.png"; var work_init= new Image(); work_init.src="images/workHistory.png"; var places_init= new Image(); places_init.src="images/placesBeen.png"; var games_init= new Image(); games_init.src="images/gamesPlay.png"; var contact_init= new Image(); contact_init.src="images/contactMe.png"; <!--Preload images for mouseover --> var about_new= new Image(); about_new.src="images/aboutAlt.png"; var courses_new= new Image(); courses_new.src="images/courseAlt.png"; var work_new= new Image(); work_new.src="images/workAlt.png"; var places_new= new Image(); places_new.src="images/placesAlt.png"; var games_new= new Image(); games_new.src="images/gamesAlt.png"; var contact_new= new Image(); contact_new.src="images/contactAlt.png"; } function change_it(the_name) { if (document.images) { document.images[the_name].src= eval(the_name+"_new.src"); } } function change_back(the_name) { if (document.images) { document.images[the_name].src= eval(the_name+"_init.src"); } } //--> </script> </head> <body> ... <center> <table border="1" style="color:#D80000;text-align:center"> <tr> <td> <a href="#about" onMouseOver="change_it('about')" onMouseOut="change_back('about')"><img src="images/aboutMe.png" name="about" id="about" border="0" alt="About Me"></a> </td> <td> <a href="#courses" onMouseOver="change_it('courses')" onMouseOut="change_back('courses')"><img src="images/courseList.png" name="courses" id="courses" border="0" alt="Courses"></a> </td> <td> <a href="#work" onMouseOver="change_it('work')" onMouseOut="change_back('work')"><img src="images/workHistory.png" name="work" id="work" border="0" alt="Work History"></a> </td> <td> <a href="#places" onMouseOver="change_it('places')" onMouseOut="change_back('places')"><img src="images/placesBeen.png" name="places" id="places" border="0" alt="Places I've Been"></a> </td> <td> <a href="#games" onMouseOver="change_it('games')" onMouseOut="change_back('games')"><img src="images/gamesPlay.png" name="games" id="games" border="0" alt="Games I Play"></a> </td> <td> <a href="#contact" onMouseOver="change_it('contact')" onMouseOut="change_back('contact')"><img src="images/contactMe.png" name="contact" id="contact" border="0" alt="Contact"></a> </td> </tr> </table> </center> ... </body> </html> The images properly switch when the mouse is moved over/off them, but the jump to the corresponding page sections seems to be broken, it seems like they're all jumping to the #about section now. Once again, the weirder thing is that this is only the case when I'm using Google Chrome on my laptop running Windows 7 or Safari using my iPhone 4 but when I use the new Internet Explorer 9 on my laptop running Windows 7 all the buttons still link correctly. Any idea what's breaking the links?

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  • Application Lifecycle Management Tools

    - by John K. Hines
    Leading a team comprised of three former teams means that we have three of everything.  Three places to gather requirements, three (actually eight or nine) places for customers to submit support requests, three places to plan and track work. We’ve been looking into tools that combine these features into a single product.  Not just Agile planning tools, but those that allow us to look in a single place for requirements, work items, and reports. One of the interesting choices is Software Planner by Automated QA (the makers of Test Complete).  It's a lovely tool with real end-to-end process support.  We’re probably not going to use it for one reason – cost.  I’m sure our company could get a discount, but it’s on a concurrent user license that isn’t cheap for a large number of users.  Some initial guesswork had us paying over $6,000 for 3 concurrent users just to get started with the Enterprise version.  Still, it’s intuitive, has great Agile capabilities, and has a reputation for excellent customer support. At the moment we’re digging deeper into Rational Team Concert by IBM.  Reading the docs on this product makes me want to submit my resume to Big Blue.  Not only does RTC integrate everything we need, but it’s free for up to 10 developers.  It has beautiful support for all phases of Scrum.  We’re going to bring the sales representative in for a demo. This marks one of the few times that we’re trying to resist the temptation to write our own tool.  And I think this is the first time that something so complex may actually be capably provided by an external source.   Hooray for less work! Technorati tags: Scrum Scrum Tools

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  • How should I work out VAT (UK tax) in my eCommerce site?

    - by Leonard Challis
    We have an ecommerce system in place. The sales actually go through Sage, so we have an export script from our system that uses a third-party Sage Importer program. With a new version of this importer, values are checked more thoroughly. We are getting 1 pence discrepancies because of the way rounding works - our system has always held prices and worked to 4 decimal places. In the checkout the totals would be worked out first, then the rounding to 2 decimal places. The importer does rounding first, though. So, for instance: Our way: Product 1: £13.4561 Qty: 2 Total inc VAT = £32.29 (to 2dp) Importer way: Our way: Product 1: £13.4561 Qty: 2 Total inc VAT = £32.30 (to 2dp) Management are reluctant to lose the 4dp but the developers of the Sage importer have said that this is correct and makes sense -- you woudn't sell a product for £13.4561 in a shop, nor would you charge someone tax at 4 decimal places. I contacted the HMRC and the operator didn't really give me much to go on, telling me a technician would phone back, to which they haven't and I'm still waiting after almost a week and numerous follow-up calls. I did find a PDF on the HMRC's web site, but this did about us much to confuse me as it did to answer my questions. I see that they're happy for people to round up or down, as long it is consistent, but I can't tell whether it should be done on a line by line basis or on the end total of the order. We are now in the position where we need to decide whether it's worth us doing one of the following, or something completely different. Please advise with any experience or information I can read. Change all products on the site to use 2dp Keep 4dp but round each line in the order to 2dp before working out tax Keep it as it is and "fudge" the values at the export script (i.e. make that values correct by adding or subtracting 1p and changing the shipping cost to make the totals still work out) Any thoughts?

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  • Sorting Algorithm : output

    - by Aaditya
    I faced this problem on a website and I quite can't understand the output, please help me understand it :- Bogosort, is a dumb algorithm which shuffles the sequence randomly until it is sorted. But here we have tweaked it a little, so that if after the last shuffle several first elements end up in the right places we will fix them and don't shuffle those elements furthermore. We will do the same for the last elements if they are in the right places. For example, if the initial sequence is (3, 5, 1, 6, 4, 2) and after one shuffle we get (1, 2, 5, 4, 3, 6) we will keep 1, 2 and 6 and proceed with sorting (5, 4, 3) using the same algorithm. Calculate the expected amount of shuffles for the improved algorithm to sort the sequence of the first n natural numbers given that no elements are in the right places initially. Input: 2 6 10 Output: 2 1826/189 877318/35343 For each test case output the expected amount of shuffles needed for the improved algorithm to sort the sequence of first n natural numbers in the form of irreducible fractions. I just can't understand the output.

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  • Code-Golf: Friendly Number Abbreviator

    - by David Murdoch
    Based on this question: Is there a way to round numbers into a friendly format? THE CHALLENGE - UPDATED! (removed hundreds abbreviation from spec) The shortest code by character count that will abbreviate an integer (no decimals). Code should include the full program. Relevant range is from 0 - 9,223,372,036,854,775,807 (the upper limit for signed 64 bit integer). The number of decimal places for abbreviation will be positive. You will not need to calculate the following: 920535 abbreviated -1 place (which would be something like 0.920535M). Numbers in the tens and hundreds place (0-999) should never be abbreviated (the abbreviation for the number 57 to 1+ decimal places is 5.7dk - it is unneccessary and not friendly). Remember to round half away from zero (23.5 gets rounded to 24). Banker's rounding is verboten. Here are the relevant number abbreviations: h = hundred (102) k = thousand (103) M = million (106) G = billion (109) T = trillion (1012) P = quadrillion (1015) E = quintillion (1018) SAMPLE INPUTS/OUTPUTS (inputs can be passed as separate arguments): First argument will be the integer to abbreviate. The second is the number of decimal places. 12 1 => 12 // tens and hundreds places are never rounded 1500 2 => 1.5k 1500 0 => 2k // look, ma! I round UP at .5 0 2 => 0 1234 0 => 1k 34567 2 => 34.57k 918395 1 => 918.4k 2134124 2 => 2.13M 47475782130 2 => 47.48G 9223372036854775807 3 => 9.223E // ect... . . . Original answer from related question (javascript, does not follow spec): function abbrNum(number, decPlaces) { // 2 decimal places => 100, 3 => 1000, etc decPlaces = Math.pow(10,decPlaces); // Enumerate number abbreviations var abbrev = [ "k", "m", "b", "t" ]; // Go through the array backwards, so we do the largest first for (var i=abbrev.length-1; i>=0; i--) { // Convert array index to "1000", "1000000", etc var size = Math.pow(10,(i+1)*3); // If the number is bigger or equal do the abbreviation if(size <= number) { // Here, we multiply by decPlaces, round, and then divide by decPlaces. // This gives us nice rounding to a particular decimal place. number = Math.round(number*decPlaces/size)/decPlaces; // Add the letter for the abbreviation number += abbrev[i]; // We are done... stop break; } } return number; }

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  • SQLAuthority News – Tips for Traveling to Nepal

    - by pinaldave
    If you are a regular reader of this blog, you might know that I travel nearly 20+ days out of 30 days in a month. There are cases when I don’t have a chance to go home for an entire month and my family has to travel to different cities just to meet me. During my recent visit, one of my acquaintances suggested that I should blog about my travel experiences as well. This can be helpful to others who are traveling to the country or city. I have previously written about my experience about all the airlines in India. I would be writing about a few tips about traveling to the beautiful country Nepal today. Kathmandu, the capital of Nepal is very scenic. There are lots of historical places to see and visit. I was fortunate enough to stopover the Pashupatinath Temple, Bhaktapur, Vasantpur and the temple of Kumari Goddess. I also visited casinos there, but even if  I have stayed in Las Vegas for 3 and a half years before, I was not keen on them so I left the casinos just like what I did in Las Vegas . I also traveled to the famous Thamel area by car. Here are my quick tips for anyone who is planning to visit Nepal. They are not categorized but just written in the order that came to my mind. Please note that if you are an Indian, you will get a special privilege everywhere in Nepal, beginning right from the Indian airports. Use the expression “Nameste!” If you want to greet any Indian or Nepali. Indian Nationals do not need visa/passport to enter Nepal. In fact, Indian Nationals can just walk in to Nepal without any passport; but should have any valid Indian ID. There is no use of a passport since it will not be stamped at any immigration ports, whether in India or Nepal. Indian currency is widely accepted everywhere. However, please bring only Rs. 100 bills/notes as Rs. 500 or Rs. 1000 are not accepted. However, casinos there will accept larger bills. Indian National Language – Hindi is widely spoken and understood everywhere. I did not find a single person who had trouble speaking it. Nepali language uses the scripting language as Devnagari, which is similar to Hindi. Here, you will find food of almost every country.  The taste of Nepali food is authentic and very delicious. It is very safe to travel and move around in Kathmandu (despite what media suggests). However, it will really help if you have a friend who speaks Nepali. You can negotiate a few deals and cut off to almost 1/5 of the original quoted price of products sold here. If you are from Gujarat, India – you will find Nepali language sharing many common words. Temples are everywhere, so do not miss to visit a few of them. Pashupatinath is a must. Only followers of Hindu religion (from Nepal and India only) are allowed in most of the holy places. Camera is allowed everywhere except on the holy places. Now it is your turn to share your opinions or any suggestions. I think Nepal is a great country as there are lots of places to visit. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, T SQL, Technology

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  • Airtel 3G in Chennai – User experience, Price & What’s the catch?

    - by Boonei
    Finally ! Here we are with Airtel 3G in India. Now Airtel customers can have a go at real 3G speed. Sources suggest that the delay in rolling out 3G was due to hardware problems. It was provided by Ericsson. Now first things first. Let me get to the point. I had subscribed to Airtel’s 3G pack Rs.100 for 100 MB. This is to check out how good it is, did not want to pay a hefty sum at the first instance. It was pretty smooth upgrading.. After the upgrade I did see the much awaited 3G signal bar on my phone. Ok! now its testing time. User experience First I did a bit of browsing, boy ! it was pretty quick, web pages loaded in a jiffy. I really did not time it because it loaded really quick. I loaded a YouTube Video, no buffering, watched the 4 min Video with no problems, it took around 6 MB of data usage Made a Skype call for about 6 min, voice clarity was really good and data usage was around 4-5 MB Tried Google Maps everything was so fast could not see the difference between computer and my phone, used it for about couple of minutes. Did listen to an Online Radio for about 5 min took about 8 MB of data usage Guess there is no need to say about Facebook or Twitter. It was good obviously. Video Call – Not yet tested Price – Do you get what you pay for ? 3G speed is fantastic, you have to really feel it to enjoy it. But currently in Airtel, 3G is available only in 3 places wiz. Bengaluru, Chennai, Coimbatore. ok ! Its not even there in all the metros? hmmm. 3G signal was not available in all parts of Chennai, often in many places it changed to 2G. Let alone all the places, even in my house when walking from one room to another sometimes its shows 2G. When it chaged from 3G to 2G there was lag in the application when it was loading data which often made me wonder if the application hanged. Currently prices not low. 2G plans in Airtel is Rs.98 for 2GB and for Rs.100 its only 100MB in 3G. Now you decide please, it’s quite a debate. The Catch – There is always a catch right ? If you have bought 3G connection and in places where 3G is not available (2G) and use any application that requires data connections (youtube, browse, chat etc) its changed with 3G!. Meaning if you have bought 100MB of 3G by paying Rs.100 like I did, suppose you used the connection for about 10MB using 2G, then it would reduce from the 100MB to 90 MB….That’s bad ! You cannot have 2G and 3G plans activated at the same point of time in your phone. You will pay 3G price for using 2G. This article titled,Airtel 3G in Chennai – User experience, Price & What’s the catch?, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • On a BPM Mission with Process Accelerators. Part 1: BPM as an ATV

    - by Cesare Rotundo
    Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Part 1: BPM as an ATV It’s always exciting to talk to customers that are in the middle of a BPM transformational journey. Their thirst for new processes to improve with BPM makes them explorers in a landscape of opportunities. They have discovered that with BPM the can “go places” they couldn’t reach before. In a way, learning how to generate value with BPM is like adopting a new mean of transportation. Apps are like regular cars: very efficient, but to be used on paved roads: the road/process has been traced, and there are fixed paths to follow to get from “opportunity to quote” or from “quote to cash”. Getting off the road is risky, and laying down new asphalt is slow and expensive. Custom development is like running: you can go virtually anywhere, following any path you like, yet it’s slow, and a lot of sweat. BPM allows you to go “off the beaten path” laid out by packaged apps, yet make fast progress compared to custom development. BPM is therefore more like an All-Terrain Vehicle (ATV): less efficient than a car, but much faster than running, with a powerful enough engine that can get you places. The similarities between BPM and ATVs don’t stop here: you must learn to ride it even if you already know how to drive a car; you can reach places but figuring out the path to your destination is harder. Ultimately, with BPM as with an ATV, you reach places that you thought you could never reach, and you discover new destinations that provide great benefit to you … and that you didn’t even know existed! That’s where the sense of accomplishment that we heard from our BPM customers comes from, as well as the desire to share their experience, or even, as in the case of a County, the willingness to contribute their BPM solutions to help other agencies that face the same challenges. The question we wanted to answer is how can we teach organizations to drive ATV/BPM, thus leading them to deeper success with BPM, while increasing their awareness of the potential for reaching new targets, and finally equip them with the right tools. Like with ATVs, getting from point A to point B is more of a work of art than cruising on the highway by car. There is a lot we can do: after all many sought after destinations are common: someone else has been on the same path before. If only you could learn from their experience …

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  • FindByIdentity in System.DirectoryServices.AccountManagment Memory Issues

    - by MVC Fanatic
    I'm working on an active directory managament application. In addition to the typical Create A New User, Enable/Disable an account, reset my password etc. it also managages application permissions for all of the clients web applications. Application management is handled by thousands of AD groups such as which are built from 3 letter codes for the application, section and site, there are also hundreds of AD groups which determine which applications and locations a coordinator can grant rights to. All of these groups in turn belong to other groups so I typically filter the groups list with the MemberOf property to find the groups that a user directly belongs to (or everyone has rights to do everything). I've made extensive use of the System.DirectoryServices.AccountManagment namespace using the FindByIdentity method in 31 places throughout the application. This method calls a private method FindPrincipalByIdentRefHelper on the internal ADStoreCtx class. A SearchResultCollection is created but not disposed so eventually typically once or twice a day the web server runs out of memory and all of the applications on the web server stop responsing until iis is reset because the resources used by the com objects aren't ever relased. There are places where I fall back to the underlying directory objects, but there are lot of places where I'm using the properties on the Principal - it's a vast improvement over using the esoteric ad property names in the .Net 2.0 Directory services code. I've contacted microsoft about the problem and it's been fixed in .Net 4.0 but they don't currently have plans to fix it in 3.5 unless there is intrest in the community about it. I only found information about it in a couple of places the MDSN documentation in the community content state's there is a memory leak at the bottom (guess I should have read that before using the the method) http://msdn.microsoft.com/en-us/library/bb345628.aspx And the class in question is internal and doesn't expose SearchResultsCollection outside the offending method so I can't get at the results to dispose them or inherit from the class and override the method. So my questions are Has anyone else encountered this problem? If so were you able to work around it? Do I have any option besides rewriting the application not using any of the .Net 3.5 active directory code? Thanks

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  • RIF PRD: Presentation syntax issues

    - by Charles Young
    Over Christmas I got to play a bit with the W3C RIF PRD and came across a few issues which I thought I would record for posterity. Specifically, I was working on a grammar for the presentation syntax using a GLR grammar parser tool (I was using the current CTP of ‘M’ (MGrammer) and Intellipad – I do so hope the MS guys don’t kill off M and Intellipad now they have dropped the other parts of SQL Server Modelling). I realise that the presentation syntax is non-normative and that any issues with it do not therefore compromise the standard. However, presentation syntax is useful in its own right, and it would be great to iron out any issues in a future revision of the standard. The main issues are actually not to do with the grammar at all, but rather with the ‘running example’ in the RIF PRD recommendation. I started with the code provided in Example 9.1. There are several discrepancies when compared with the EBNF rules documented in the standard. Broadly the problems can be categorised as follows: ·      Parenthesis mismatch – the wrong number of parentheses are used in various places. For example, in GoldRule, the RHS of the rule (the ‘Then’) is nested in the LHS (‘the If’). In NewCustomerAndWidgetRule, the RHS is orphaned from the LHS. Together with additional incorrect parenthesis, this leads to orphanage of UnknownStatusRule from the entire Document. ·      Invalid use of parenthesis in ‘Forall’ constructs. Parenthesis should not be used to enclose formulae. Removal of the invalid parenthesis gave me a feeling of inconsistency when comparing formulae in Forall to formulae in If. The use of parenthesis is not actually inconsistent in these two context, but in an If construct it ‘feels’ as if you are enclosing formulae in parenthesis in a LISP-like fashion. In reality, the parenthesis is simply being used to group subordinate syntax elements. The fact that an If construct can contain only a single formula as an immediate child adds to this feeling of inconsistency. ·      Invalid representation of compact URIs (CURIEs) in the context of Frame productions. In several places the URIs are not qualified with a namespace prefix (‘ex1:’). This conflicts with the definition of CURIEs in the RIF Datatypes and Built-Ins 1.0 document. Here are the productions: CURIE          ::= PNAME_LN                  | PNAME_NS PNAME_LN       ::= PNAME_NS PN_LOCAL PNAME_NS       ::= PN_PREFIX? ':' PN_LOCAL       ::= ( PN_CHARS_U | [0-9] ) ((PN_CHARS|'.')* PN_CHARS)? PN_CHARS       ::= PN_CHARS_U                  | '-' | [0-9] | #x00B7                  | [#x0300-#x036F] | [#x203F-#x2040] PN_CHARS_U     ::= PN_CHARS_BASE                  | '_' PN_CHARS_BASE ::= [A-Z] | [a-z] | [#x00C0-#x00D6] | [#x00D8-#x00F6]                  | [#x00F8-#x02FF] | [#x0370-#x037D] | [#x037F-#x1FFF]                  | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF]                  | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD]                  | [#x10000-#xEFFFF] PN_PREFIX      ::= PN_CHARS_BASE ((PN_CHARS|'.')* PN_CHARS)? The more I look at CURIEs, the more my head hurts! The RIF specification allows prefixes and colons without local names, which surprised me. However, the CURIE Syntax 1.0 working group note specifically states that this form is supported…and then promptly provides a syntactic definition that seems to preclude it! However, on (much) deeper inspection, it appears that ‘ex1:’ (for example) is allowed, but would really represent a ‘fragment’ of the ‘reference’, rather than a prefix! Ouch! This is so completely ambiguous that it surely calls into question the whole CURIE specification.   In any case, RIF does not allow local names without a prefix. ·      Missing ‘External’ specifiers for built-in functions and predicates.  The EBNF specification enforces this for terms within frames, but does not appear to enforce (what I believe is) the correct use of External on built-in predicates. In any case, the running example only specifies ‘External’ once on the predicate in UnknownStatusRule. External() is required in several other places. ·      The List used on the LHS of UnknownStatusRule is comma-delimited. This is not supported by the EBNF definition. Similarly, the argument list of pred:list-contains is illegally comma-delimited. ·      Unnecessary use of conjunction around a single formula in DiscountRule. This is strictly legal in the EBNF, but redundant.   All the above issues concern the presentation syntax used in the running example. There are a few minor issues with the grammar itself. Note that Michael Kiefer stated in his paper “Rule Interchange Format: The Framework” that: “The presentation syntax of RIF … is an abstract syntax and, as such, it omits certain details that might be important for unambiguous parsing.” ·      The grammar cannot differentiate unambiguously between strategies and priorities on groups. A processor is forced to resolve this by detecting the use of IRIs and integers. This could easily be fixed in the grammar.   ·      The grammar cannot unambiguously parse the ‘->’ operator in frames. Specifically, ‘-’ characters are allowed in PN_LOCAL names and hence a parser cannot determine if ‘status->’ is (‘status’ ‘->’) or (‘status-’ ‘>’).   One way to fix this is to amend the PN_LOCAL production as follows: PN_LOCAL ::= ( PN_CHARS_U | [0-9] ) ((PN_CHARS|'.')* ((PN_CHARS)-('-')))? However, unilaterally changing the definition of this production, which is defined in the SPARQL Query Language for RDF specification, makes me uncomfortable. ·      I assume that the presentation syntax is case-sensitive. I couldn’t find this stated anywhere in the documentation, but function/predicate names do appear to be documented as being case-sensitive. ·      The EBNF does not specify whitespace handling. A couple of productions (RULE and ACTION_BLOCK) are crafted to enforce the use of whitespace. This is not necessary. It seems inconsistent with the rest of the specification and can cause parsing issues. In addition, the Const production exhibits whitespaces issues. The intention may have been to disallow the use of whitespace around ‘^^’, but any direct implementation of the EBNF will probably allow whitespace between ‘^^’ and the SYMSPACE. Of course, I am being a little nit-picking about all this. On the whole, the EBNF translated very smoothly and directly to ‘M’ (MGrammar) and proved to be fairly complete. I have encountered far worse issues when translating other EBNF specifications into usable grammars.   I can’t imagine there would be any difficulty in implementing the same grammar in Antlr, COCO/R, gppg, XText, Bison, etc. A general observation, which repeats a point made above, is that the use of parenthesis in the presentation syntax can feel inconsistent and un-intuitive.   It isn’t actually inconsistent, but I think the presentation syntax could be improved by adopting braces, rather than parenthesis, to delimit subordinate syntax elements in a similar way to so many programming languages. The familiarity of braces would communicate the structure of the syntax more clearly to people like me.  If braces were adopted, parentheses could be retained around ‘var (frame | ‘new()’) constructs in action blocks. This use of parenthesis feels very LISP-like, and I think that this is my issue. It’s as if the presentation syntax represents the deformed love-child of LISP and C. In some places (specifically, action blocks), parenthesis is used in a LISP-like fashion. In other places it is used like braces in C. I find this quite confusing. Here is a corrected version of the running example (Example 9.1) in compliant presentation syntax: Document(    Prefix( ex1 <http://example.com/2009/prd2> )    (* ex1:CheckoutRuleset *)  Group rif:forwardChaining (     (* ex1:GoldRule *)    Group 10 (      Forall ?customer such that And(?customer # ex1:Customer                                     ?customer[ex1:status->"Silver"])        (Forall ?shoppingCart such that ?customer[ex1:shoppingCart->?shoppingCart]           (If Exists ?value (And(?shoppingCart[ex1:value->?value]                                  External(pred:numeric-greater-than-or-equal(?value 2000))))            Then Do(Modify(?customer[ex1:status->"Gold"])))))      (* ex1:DiscountRule *)    Group (      Forall ?customer such that ?customer # ex1:Customer        (If Or( ?customer[ex1:status->"Silver"]                ?customer[ex1:status->"Gold"])         Then Do ((?s ?customer[ex1:shoppingCart-> ?s])                  (?v ?s[ex1:value->?v])                  Modify(?s [ex1:value->External(func:numeric-multiply (?v 0.95))]))))      (* ex1:NewCustomerAndWidgetRule *)    Group (      Forall ?customer such that And(?customer # ex1:Customer                                     ?customer[ex1:status->"New"] )        (If Exists ?shoppingCart ?item                   (And(?customer[ex1:shoppingCart->?shoppingCart]                        ?shoppingCart[ex1:containsItem->?item]                        ?item # ex1:Widget ) )         Then Do( (?s ?customer[ex1:shoppingCart->?s])                  (?val ?s[ex1:value->?val])                  (?voucher ?customer[ex1:voucher->?voucher])                  Retract(?customer[ex1:voucher->?voucher])                  Retract(?voucher)                  Modify(?s[ex1:value->External(func:numeric-multiply(?val 0.90))]))))      (* ex1:UnknownStatusRule *)    Group (      Forall ?customer such that ?customer # ex1:Customer        (If Not(Exists ?status                       (And(?customer[ex1:status->?status]                            External(pred:list-contains(List("New" "Bronze" "Silver" "Gold") ?status)) )))         Then Do( Execute(act:print(External(func:concat("New customer: " ?customer))))                  Assert(?customer[ex1:status->"New"]))))  ) )   I hope that helps someone out there :-)

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  • Problems with sticky footer html css

    - by CJava
    I'm having trouble making a sticky footer, whatever I do the code completely messes up and re-arranged positioning of other elements. I'm using multiple div elements. I have tried pretty much most tutorials on stickying footers online like http://www.cssstickyfooter.com/using-sticky-footer-code.html Help would be much appreciated. Thanks a lot! html: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta name="generator" content="HTML Tidy for Linux (vers 25 March 2009), see www.w3.org"> <title>Southend-on-Sea Independant Tourist Guide</title> <!--Attached CSS to keep constant throughout site--> <link rel="stylesheet" type="text/css" href="style.css"> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <meta name="description" content="An independant tourist guide on Southend-on-Sea"> <meta name="keywords" content="southend, southend-on-sea, tourist guide, tourist, independant"> <meta name="author" content="Callum Stevens"> <link rel="shortcut icon" type="image/x-icon" href="/favicon.ico"><!--[if !IE 7]> <style type="text/css"> #wrap {display:table;height:100%} </style> <![endif]--> <link rel="stylesheet" type="text/css" href="style.css"> <link rel="stylesheet" type="text/css" href="navigation.css"> </head> <body> <div id="container"> <div id="content"> <div id="header"> <table width="200" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td><img src="southendpiersept2006edit.jpg" width="700" height="389" alt="southend pier site logo"></td> </tr> </table> </div> <div id="navigation"> <ul> <li class="home"><a href="index.htm">Home</a></li> <li class="places"><a href="places.htm">Places to go</a></li> <li class="things"><a href="things.htm">Things to do</a></li> <li class="where"><a href="where.htm">Where to stay</a></li> <li class="getting"><a href="getting.htm">Getting&lt; here/a&gt;</a></li> <li class="about"><a href="getting.htm"></a><a href="getting.htm"></a><a href="about.htm">About the town</a></li> <li class="contact"><a href="contact.htm">Contact us</a></li> </ul> <table width="700" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td></td> </tr> </table> </div> <br> <br> <h1>Southend-On-Sea</h1> <br> <h2>Welcome to Southend-On-Sea Tourist Information Site. You're #1 stop for finding out about Southend!</h2> <br> <h3>This site aims to help you in getting here, finding accomodation, and letting you know whats going on.</h3> <p>paragraph</p> <p id="p2">paragraph2</p> </div> </div> <div id="footer"></div> </body> </html> style.css: html, body { margin: 0px; padding: 0px; text-align:center } body{ background: url(bg.jpg) repeat-x;} #content { text-align:center width:67%; } h2 { text-transform: capitalize;} navigation.css #navigation ul { width: 700px; height: 50px; position: absolute; /** Places image at the top of the page **/ top: 389px; /** Determines the height from the top of the page **/ left: 15.3%; /** Determines the width from the left of the page **/ background: url(menu.jpg) no-repeat 0 0; list-style: none; margin: 0; padding: 0; } #navigation li { display: inline; } #navigation li a:link, #navigation li a:visited { border: none; width: 100px; height: 50px; display: block; position: absolute; top: 0; text-indent: -7000px; outline: none; } #navigation li.home a:link, #navigation li.home a:visited { left: 0; } #navigation li.places a:link, #navigation li.places a:visited { left: 100px } #navigation li.things a:link, #navigation li.things a:visited { left: 200px } #navigation li.where a:link, #navigation li.where a:visited { left: 300px } #navigation li.getting a:link, #navigation li.getting a:visited { left: 400px } #navigation li.about a:link, #navigation li.about a:visited { left: 500px } #navigation li.contact a:link, #navigation li.contact a:visited { left: 600px } #navigation li.home a:hover { background: url(menu.jpg) no-repeat 0 -50px; } #navigation li.places a:hover { background: url(menu.jpg) no-repeat -100px -50px; } #navigation li.things a:hover { background: url(menu.jpg) no-repeat -200px -50px; } #navigation li.where a:hover { background: url(menu.jpg) no-repeat -300px -50px; } #navigation li.getting a:hover { background: url(menu.jpg) no-repeat -400px -50px; } #navigation li.about a:hover { background: url(menu.jpg) no-repeat -500px -50px; } #navigation li.contact a:hover { background: url(menu.jpg) no-repeat -600px -50px; }

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  • Spreadsheet functions to query route planner for travel time/distance

    - by Rich
    I would like to achieve something whereby I have a spreadsheet such that the columns are: Column A - place name Column B - place name Column C - distance by road between places in columns A and B Column D - travel time by road between places in columns A and B I thought it might be possible using Google Docs' spreadsheet and its 'Google' functions, but I've not found any that might do the trick. In the end I could knock up an app to do it using the Google Maps API but would rather avoid it if I can.

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  • inkscape stroke inaccurate

    - by oshirowanen
    I am trying to add a stroke to a rectangle object, but if I add a 1px stroke, it places it 0.5px outside the edge of the rectangle and 0.5px inside the rectangle. I find this to be annoying when I want an object to be exactly 5px by 5px and it ends up becoming 6px by 6px. Is there a setting anywhere which places the stroke within the rectangle edge so a 5px by 5px square remains a 5px by 5px square. Please help.

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  • Convert apache rewrite rules to nginx

    - by Shiyu Sekam
    I want to migrate an Apache setup to Nginx, but I can't get the rewrite rules working in Nginx. I had a look on the official nginx documentation, but still some trouble converting it. http://nginx.org/en/docs/http/converting_rewrite_rules.html I've used http://winginx.com/en/htaccess to convert my rules, but this just works partly. The / part looks okay, the /library part as well, but the /public part doesn't work at all. Apache part: ServerAdmin webmaster@localhost DocumentRoot /srv/www/Web Order allow,deny Allow from all RewriteEngine On RewriteRule ^$ public/ [L] RewriteRule (.*) public/$1 [L] Order Deny,Allow Deny from all RewriteEngine On RewriteCond %{QUERY_STRING} ^pid=([0-9]*)$ RewriteRule ^places(.*)$ index.php?url=places/view/%1 [PT,L] # Extract search query in /search?q={query}&l={location} RewriteCond %{QUERY_STRING} ^q=(.*)&l=(.*)$ RewriteRule ^(.*)$ index.php?url=search/index/%1/%2 [PT,L] # Extract search query in /search?q={query} RewriteCond %{QUERY_STRING} ^q=(.*)$ RewriteRule ^(.*)$ index.php?url=search/index/%1 [PT,L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d # Rewrite all other URLs to index.php/URL RewriteRule ^(.*)$ index.php?url=$1 [PT,L] Order deny,allow deny from all ErrorLog ${APACHE_LOG_DIR}/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn AddHandler php5-fcgi .php Action php5-fcgi /php5-fcgi Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -socket /var/run/php5-fpm.sock -pass-header Authorization CustomLog ${APACHE_LOG_DIR}/access.log combined Nginx config: server { #listen 80; ## listen for ipv4; this line is default and implied root /srv/www/Web; index index.html index.php; server_name localhost; location / { rewrite ^/$ /public/ break; rewrite ^(.*)$ /public/$1 break; } location /library { deny all; } location /public { if ($query_string ~ "^pid=([0-9]*)$"){ rewrite ^/places(.*)$ /index.php?url=places/view/%1 break; } if ($query_string ~ "^q=(.*)&l=(.*)$"){ rewrite ^(.*)$ /index.php?url=search/index/%1/%2 break; } if ($query_string ~ "^q=(.*)$"){ rewrite ^(.*)$ /index.php?url=search/index/%1 break; } if (!-e $request_filename){ rewrite ^(.*)$ /index.php?url=$1 break; } } location ~ \.php$ { fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; include fastcgi_params; } } I haven't written the original ruleset, so I've a hard time converting it. Would you mind giving me a hint how to do it easily or can you help me to convert it, please? I really want to switch over to php5-fpm and nginx :) Thanks

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  • Robocopy. Delete files from source

    - by kurresmack
    Hey, We copied all our files to a new storage server recently. We didn't want to move at the time becuase we werent sure if files would get lost. The problem now is that we have files on both places! How can we move only the files that does not exists in the target and for those that exists in both places we delete it from the source? it is windows server 2008 Thanks

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  • appcfg.py upload_data entity kind problem

    - by Dingo
    Hi, I am developing application on app-engine-path and I would like to upload some data to datastore. For example I have a model models/places.py: class Place(db.Model): name = db.StringProperty() longitude = db.FloatProperty() latitude = db.FloatProperty() If I save this in view, kind() of this entity is "models_place". All is ok, Place.all() in view work fine. But: If I upload some next row using appcfg.py upload_data, the kind() of this entities is Place. loader.py look like this: import datetime, os, sys from google.appengine.ext import db from google.appengine.tools import bulkloader libs_path = os.path.join("/home/martin/myproject/src/") if libs_path not in sys.path: sys.path.insert(0, libs_path) from models import places class AlbumLoader(bulkloader.Loader): def __init__(self): bulkloader.Loader.__init__(self, 'Place', [('name', lambda x: x.decode('utf-8')), ('longitude', float), ('latitude', float), ]) loaders = [AlbumLoader] and command for uploading: python /usr/local/google_appengine/appcfg.py upload_data --config_file=places_loader.py --kind=models_place --filename=data/places.csv --url=http://localhost:8000/remote_api /home/martin/myproject/src/

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