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  • Are there compelling reasons not to use Groovy?

    - by Leonard H Martin
    I'm developing a LoB application in Java after a long absence from the platform (having spent the last 8 years or so entrenched in Fortran, C, a smidgin of C++ and latterly .Net). Java, the language, is not much changed from how I remember it. I like it's strengths and I can work around its weaknesses - the platform has grown and deciding upon the myriad of different frameworks which appear to do much the same thing as one another is a different story; but that can wait for another day - all-in-all I'm comfortable with Java. However, over the last couple of weeks I've become enamoured with Groovy, and purely from a selfish point of view: but not just because it makes development against the JVM a more succinct and entertaining (and, well, "groovy") proposition than Java (the language). What strikes me most about Groovy is its inherent maintainability. We all (I hope!) strive to write well documented, easy to understand code. However, sometimes the languages we use themselves defeat us. An example: in 2001 I wrote a library in C to translate EDIFACT EDI messages into ANSI X12 messages. This is not a particularly complicated process, if slightly involved, and I thought at the time I had documented the code properly - and I probably had - but some six years later when I revisited the project (and after becoming acclimatised to C#) I found myself lost in so much C boilerplate (mallocs, pointers, etc. etc.) that it took three days of thoughtful analysis before I finally understood what I'd been doing six years previously. This evening I've written about 2000 lines of Java (it is the day of rest, after all!). I've documented as best as I know how, but, but, of those 2000 lines of Java a significant proportion is Java boiler plate. This is where I see Groovy and other dynamic languages winning through - maintainability and later comprehension. Groovy lets you concentrate on your intent without getting bogged down on the platform specific implementation; it's almost, but not quite, self documenting. I see this as being a huge boon to me when I revisit my current project (which I'll port to Groovy asap) in several years time and to my successors who will inherit it and carry on the good work. So, are there any reasons not to use Groovy?

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  • Does OOP make sense for small scripts?

    - by Fabian
    I mostly write small scripts in python, about 50 - 250 lines of code. I usually don't use any objects, just straightforward procedural programming. I know OOP basics and I have used object in other programming languages before, but for small scripts I don't see how objects would improve them. But maybe that is just my limited experience with OOP. Am I missing something by not trying harder to use objects, or does OOP just not make a lot of sense for small scripts?

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  • Show all datatips for a single lineseries

    - by rchung77
    I'm trying to figure out if there is a way to show all datatips for a single lineseries in a Flex 3 linechart. This chart will have multiple lines and the functionality we're looking for is when a user hovers over a line, show all datatips associated with just that series. Any help would be appreciated. showAllDataTips will not work in this case as it will display all datatips on the chart. Thanks! Rich

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  • BizTalk mapping to excel

    - by rsapru
    Is there a way to convert or get the mapping from BizTalk map to an excel or a text file. From where we can directly see what field is mapped to what filed instead of following the lines. I have an BizTalk map which had around 600 fields mapped. any pointers will be really helpful.

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  • php regex guitar tab (tabs or tablature, a type of music notation)

    - by John
    I am in the process of creating a guitar tab to rtttl (Ring Tone Text Transfer Language) converter in PHP. In order to prepare a guitar tab for rtttl conversion I first strip out all comments (comments noted by #- and ended with -#), I then have a few lines that set tempo, note the tunning and define multiple instruments (Tempo 120\nDefine Guitar 1\nDefine Bass 1, etc etc) which are stripped out of the tab and set aside for later use. Now I essentially have nothing left except the guitar tabs. Each tab is prefixed with it's instrument name in conjunction with the instrument name noted prior. Some times we have tabs for 2 separate instruments that are linked because they are to be played together, ie a Guitar and a Bass Guitar playing together. Example 1, Standard Guitar Tab: |Guitar 1 e|--------------3-------------------3------------| B|------------3---3---------------3---3----------| G|----------0-------0-----------0-------0--------| D|--------0-----------0-------0-----------0------| A|------2---------------2---2---------------2----| E|----3-------------------3-------------------3--| Example 2, Conjunction Tab: |Guitar 1 e|--------------3-------------------3------------| B|------------3---3---------------3---3----------| G|----------0-------0-----------0-------0--------| D|--------0-----------0-------0-----------0------| A|------2---------------2---2---------------2----| E|----3-------------------3-------------------3--| | | |Bass 1 G|----------0-------0-----------0-------0--------| D|--------2-----------2-------2-----------2------| A|------3---------------3---3---------------3----| E|----3-------------------3-------------------3--| I have considered other methods of identifying the tabs with no solid results. I am hoping that someone who does regular expressions could help me find a way to identify a single guitar tab and if possible also be able to match a tab with multiple instruments linked together. Once the tabs are in an array I will go through them one line at a time and convert them into rtttl lines (exploded at each new line "\n"). I do not want to separate the guitar tabs in the document via explode "\n\n" or something similar because it does not identify the guitar tab, rather, it is identifying the space between the tabs - not on the tabs themselves. I have been messing with this for about a week now and this is the only major hold up I have. Everything else is fairly simple. As of current, I have tried many variations of the regex pattern. Here is one of the most recent test samples: <?php $t = " |Guitar 1 e|--------------3-------------------3------------| B|------------3---3---------------3---3----------| G|----------0-------0-----------0-------0--------| D|--------0-----------0-------0-----------0------| A|------2---------------2---2---------------2----| E|----3-------------------3-------------------3--| |Guitar 1 e|--------------3-------------------3------------| B|------------3---3---------------3---3----------| G|----------0-------0-----------0-------0--------| D|--------0-----------0-------0-----------0------| A|------2---------------2---2---------------2----| E|----3-------------------3-------------------3--| | | |Bass 1 G|----------0-------0-----------0-------0--------| D|--------2-----------2-------2-----------2------| A|------3---------------3---3---------------3----| E|----3-------------------3-------------------3--| "; preg_match_all("/^.*?(\\|).*?(\\|)/is",$t,$p); print_r($p); ?> It is also worth noting that inside the tabs, where the dashes and #'s are, you may also have any variation of letters, numbers and punctuation. The beginning of each line marks the tuning of each string with one of the following case insensitive: a,a#,b,c,c#,d,d#,e,f,f#,g or g. Thanks in advance for help with this most difficult problem.

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  • POSTing a form using Python and Curl

    - by morpheous
    I am relatively new (as in a few days) to Python - I am looking for an example that would show me how to post a form to a website (say www.example.com). I already know how to use Curl. Infact, I have written C+++ code that does exactly the same thing (i.e. POST a form using Curl), but I would like some starting point (a few lines from which I can build on), which will show me how to do this using Python.

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  • Tokenizing a string with variable whitespace

    - by Ron Holcomb
    I've read through a few threads detailing how to tokenize strings, but I'm apparently too thick to adapt their suggestions and solutions into my program. What I'm attempting to do is tokenize each line from a large (5k+) line file into two strings. Here's a sample of the lines: 0 -0.11639404 9.0702948e-05 0.00012207031 0.0001814059 0.051849365 0.00027210884 0.062103271 0.00036281179 0.034423828 0.00045351474 0.035125732 The difference I'm finding between my lines and the other sample input from other threads is that I have a variable amount of whitespace between the parts that I want to tokenize. Anyways, here's my attempt at tokenizing: #include <iostream> #include <iomanip> #include <fstream> #include <string> using namespace std; int main(int argc, char *argv[]) { ifstream input; ofstream output; string temp2; string temp3; input.open(argv[1]); output.open(argv[2]); if (input.is_open()) { while (!input.eof()) { getline(input, temp2, ' '); while (!isspace(temp2[0])) getline(input, temp2, ' '); getline (input, temp3, '\n'); } input.close(); cout << temp2 << endl; cout << temp3 << endl; return 0; } I've clipped it some, since the troublesome bits are here. The issue that I'm having is that temp2 never seems to catch a value. Ideally, it should get populated with the first column of numbers, but it doesn't. Instead, it is blank, and temp3 is populated with the entire line. Unfortunately, in my course we haven't learned about vectors, so I'm not quite sure how to implement them in the other solutions for this I've seen, and I'd like to not just copy-paste code for assignments to get things work without actually understanding it. So, what's the extremely obvious/already been answered/simple solution I'm missing? I'd like to stick to standard libraries that g++ uses if at all possible.

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  • Redirect Large Number of URLs (HTML Files) to Wordpress

    - by Chetan
    Hi, I have over 2000 HTML files that are now in Wordpress blog. I have the URL Map of Old_file.html and new wordpress URL. I want 301 redirect but don't want to add 2000 lines to htaccess. Can you please suggest how to accomplish this using PHP so that when there is a request for old url, the php script should lookup into the database and redirect(301) to the new URL ? Thanks.

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  • Problem enabling OpenGL ES depth test on iPhone. What steps are necessary?

    - by Chris Cooper
    I remember running into this problem when I started using OpenGL in OS X. Eventually I solved it, but I think that was just by using glut and c++ instead of Objective-C... The lines of code I have in init for the ES1Renderer are as follows: glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); Then in the render method, I have this: glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); I assume I'm missing something specific to either the iPhone or ES. What other steps are required to enable the depth test? Thanks

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  • TargetInvocationException?

    - by Mark
    Why would these lines of code cause that exception private Dispatcher dispatcher = null; public DownloadManager(Dispatcher dispatcher = null) { this.dispatcher = dispatcher ?? Dispatcher.CurrentDispatcher; } When the DownloadManager is instantiated in the XAML like <Window.DataContext> <c:DownloadManager /> </Window.DataContext> ?

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  • Version Control System with API. Need to get metrics

    - by w1z
    Hi all, I have next situation. I need to choise source control system for my project. This scs must provide the API to my .net application to get information about check-in-s for specified user and date period and about changes which was done in this check-in-s (the number of added and updated lines). What source control system provides this functionality? P.S. I can't use the TFS, it's a limitation..

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  • Is there a simpler way to redirect using a route while adding paramters in Kohana?

    - by Darryl Hein
    I find myself doing the following or similar quite often: Request::instance()->redirect(Route::get('route')->uri(array('action' => 'action'))); Or: Request::instance()->redirect(Route::get(Route::name(Request::instance()->route))->uri(array('action' => 'action'))); I'm wondering if there's any short, easier, simpler way of doing this. I love the Route functionality, but it makes for some long lines of PHP.

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  • How to get all <img> tags inside a text selection?

    - by CyberShadow
    I've looked around for a while, but there doesn't seem to be a simple way to do this. jQuery doesn't help the in least, it seems to entirely lack any support for selection or DOM ranges. Something which I hoped would be as simple as $.selection.filter('img') seems to only be doable with dozens of lines of code dealing with manually enumerating elements in ranges and browser implementation inconsistencies (though ierange helps here). Any other shortcuts?

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  • Saving an xml file without

    - by little
    Hi, How do I work with an xml file that when updating it, after saving the commented lines would still be present. Here's my code snippet for saving the file: public static void WriteSettings(Settings settings, string path) { XmlSerializer serializer = new XmlSerializer(typeof(Settings)); TextWriter writer = new StreamWriter(path); serializer.Serialize(writer, settings); writer.Close(); }

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  • how to selectively filter items in a collection

    - by Samuel
    I use the following snippet to filter the list of selected users, where isSelected is a boolean variable. Is there a simpler way (helper function) to populate the selectedUsers collection instead of writing the following lines of code. List<User> selectedUsers = new ArrayList<User>(0); for (User user : this.getUsers()) { if (user.isSelected()) { selectedUsers.add(user.getId()); } }

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  • using dictionary to assign misspelled words to its line number

    - by jad
    This is the code I have so far d = {} counter = 0 for lines in words: counter += 1 for word in text1: if word not in words: d[word] = [counter] else: d[word].append(counter) print(word, d[counter]) words = my text file text1 is my misspelled words But this gives me an error. What I want to do is print the word and the line number e.g. togeher 5 7

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  • What is this hacker trying to do?

    - by JW
    If you do a search for: http://www.google.co.uk/search?q=0x57414954464F522044454C4159202730303A30303A313527&hl=en&start=30&sa=N you will see a lot of examples of an attempted hack along the lines of: 1) declare @q varchar(8000) select @q = 0x57414954464F522044454C4159202730303A30303A313527 exec(@q) -- What is exactly is it trying to do? Which db is it trying to work on? Do you know of any advisories about this?

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  • iphone animation - catch notification

    - by satyam
    I'm using following lines of code to animate: CATransition *animation = [self getAnimation:dirString]; [[self view] exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; [[[self view] layer] addAnimation:animation forKey:kAnimationKey]; After end of animation, I want to play sound. How can I get notification when animation is completed?

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  • Stored Procedure IDENTITY_INSERT

    - by Jacob
    I'm recently change my data table, I remove column and add a new column that define as identity = True and identity seed = 1, identity increment = 1. When i tried to insert data to this table by STORE PROCEDURE i get this exception: An explicit value for the identity column in table 'AirConditioner' can only be specified when a column list is used and IDENTITY_INSERT is ON. I saw that i need to add this lines: SET IDENTITY_INSERT [dbo].[AirConditioner] ON and finally OFF I added and its still throw an exception... My store procedure is attached as a picture

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  • mapping file-* to a property

    - by andersonbd1
    Hi, I'd like to: <unjar src="lib/mst-service-impl*.zip" but I can't put an asterisk in there. It is only one file, but I don't want to hardcode the version in there. Is there a way to create a property with the asterisk (I know this particular example doesn't work, but perhaps something along these lines): <property name="my.jar" file="lib/mst-service-impl*.zip"> so that I could then do this: <unjar src="${my.jar}" Thanks, Ben

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