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  • How do I transform a single colmn list to item matrix in R?

    - by Indy
    I currently have data that is in the following format (note, this is 1 column, 4 row matrix): aa|bb bb|cc|ee|ee cc cc|ee and I want it displayed so that the column names are: aa, bb, cc, dd, and ee. And I want there to be 4 row such that each row counts the number of times each string was present in the matching row above. ie) aa bb cc dd ee 1 1 0 0 0 0 1 1 0 2 0 0 1 0 0 0 0 1 0 1 Does anyone know how to do this in R? I would post my attempt, but it is just getting ugly and complicated. Any help would be much appreciated. Thanks in advance.

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  • Is there an open source MVP framework for C++?

    - by morpheous
    I am looking for a lightweight set of C++ classes that implement/show how to use the MVP design pattern, so that I can refactor some legacy code I am working on. A library/framework would be nice to get me started. A quick google search seems to bring up only C# examples - is anyone aware of any C++ ones out there? [Edit] I am particularly interested in a Passive viewer, as I want to completely decouple the view from the model.

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  • Can I lock rows in a cursor if the cursor only returns a single count(*) row?

    - by RenderIn
    I would like to restrict users from inserting more than 3 records with color = 'Red' in my FOO table. My intentions are to A) retrieve the current count so that I can determine whether another record is allowed and B) prevent any other processes from inserting any Red records while this one is in process, hence the for update of. I'd like to do something like: cursor cur_cnt is select count(*) cnt from foo where foo.color = 'Red' for update of foo.id; Will this satisfy both my requirements or will it not lock only the rows in the count(*) who had foo.color = 'Red'?

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  • Rolling back a git tree, fully or partially (single file) how to?

    - by Tzury Bar Yochay
    On a given server, I have a set of daemons each of which has its own configuration file. I would like to use git to manage the configuration files editing during time and always have the option to rollback to the "factory defaults" in regards to all files or a specific one. For instance, given the following structure: $ ls -l total 0 -rw-r--r-- 1 tzury tzury 0 2011-01-05 06:36 bar.conf -rw-r--r-- 1 tzury tzury 0 2011-01-05 06:36 baz.conf -rw-r--r-- 1 tzury tzury 0 2011-01-05 06:36 foo.conf Assuming all those .conf files are stored in a git repository, I want to be able to restore all files into their original shape (that would be the first git commit). Yet, I would also like to be able to rollback a specific file to the factory defaults, while others remain up to date.

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  • How do we match any single character including line feed in Perl regular expression?

    - by bobo
    I would like to use UltraEdit regular expression (perl) to replace the following text with some other text in a bunch of html files: <style type="text/css"> #some-id{} .some-class{} //many other css styles follow </style> I tried to use <style type="text/css">.*</style> but of course it wouldn't match anything because the dot matches any character except line feed. I would like to match line feed as well and the line feed maybe either \r\n or \n. How should the regular expression look like? Many thanks to you all.

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  • How to convert the amount of indentation in a source code file?

    - by toby
    I find that I now often work with code bases that have different amounts of indentation. Some use 2 spaces, some use 4 space, some even use tabs! Once in a while, I have to share code between these codebases, or, sometimes I use an incorrect amount of indentation by mistake. Is there a tool or a text editor feature that will convert between different amounts of indentation?

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  • Which is more efficient in mysql, a big join or multiple queries of single table?

    - by Tom Greenpoint
    I have a mysql database like this Post – 500,000 rows (Postid,Userid) Photo – 200,000 rows (Photoid,Postid) About 50,000 posts have photos, average 4 each, most posts do not have photos. I need to get a feed of all posts with photos for a userid, average 50 posts each. Which approach would be more efficient? 1: Big Join select * from post left join photo on post.postid=photo.postid where post.userid=123 2: Multiple queries select * from post where userid=123 while (loop through rows) { select * from photo where postid=row[postid] }

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  • Can you have multiple interpolators on a single view when using ViewPropertyAnimator?

    - by steven
    For example, I would like to animate a view such that it moves down in the y direction while decelerating, and at the same time it undergoes an alpha change linearly. The code would look something like this: myView.animate().translationY(100).setDuration(1000).setInterpolator(new DecelerateInterpolator()); myView.animate().alpha(1).setDuration(1000).setInterpolator(new LinearInterpolator()); This does not work of course because the LinearInterpolator overwrites the DecelerateInterpolator. Is there a way to have one interpolator for the translation part of the animation and a different interpolator for the alpha part? I am aware that this can be accomplished using ObjectAnimator or an AnimationSet, but my question is about whether it can be done using the much cleaner ViewPropertyAnimator.

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  • jquery - How to reference two div elements for a single function?

    - by Ben
    I Have a function that references a specific input text box. I would like to extend the function to be used by two specific input text boxes. Rather than duplicate the code for the other text box, can anyone advise on how to reference the other? Here it uses #Tags, but if i wanted it to reference #Tags2 also, how could I do that? $(function () { $('#Tags').tagSuggest({ separator: ", ", tagContainer: 'div', tags: ["tag1","tag2"] }); });

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  • Autohotkey to map F5 to Shift+Home and then F5 - eventually executing a single line query in sql server?

    - by puretechy
    Reading the syntax from autohotkey, I am trying to achieve this. But the first step of selecting the entire line is not working:- F5:: send {Shift Home} return I have tried few others too, but its not working. This is not sending Shift+Home combination on pressing F5 key. Please tell me what's wrong with this? Also if possible, what to do next?, as if I will write send {F5} I believe, it will recursively fire this script again and again..

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  • How to do svn ignore on a single file?

    - by Zando
    I know it's a basic question but I've tried every combination of propedit propset, etc. In an existing project, there's a file (let's call it 'error.log) I want to ignore for all future commits. What's the command-line syntax to do so?

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  • Can I restore a single table from a full mysql mysqldump file?

    - by Mobius
    I have a mysqldump backup of my mysql database consisting of all of our tables which is about 440 megs. I want to restore the contents of just one of the tables form the mysqldump. Is this possible? Theoretically, I could just cut out the section that rebuilds the table I want but I don't even know how to effectively edit a text document that size.

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  • Need to integrate phpFox and Wordpress so that there is a single login.

    - by Jason
    phpFox should take care of user login management, add user and edit user. But would like to automatically create a corresponding Wordpress account when user signs up for phpFox. And when user logs into phpFox user is auto logged into Wordpress so user doesn't really even realize Wordpress login or user account exists. What would be the best way to do this? Apps will be on the same server so could make native calls or use curl.

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  • Retriving requried data form Content Providers using single cursor.

    - by HellBoy
    I want to retrieve Name,Number,Company,and Designation so I am retrieving it using 2 cursor as follow Cursor cursor1 = getContentResolver().query(Data.CONTENT_URI, new String[]{Organization.COMPANY, Organization.TITLE}, Data.MIMETYPE + "='" + Organization.CONTENT_ITEM_TYPE + "'", null, null); Cursor cursor2 = getContentResolver().query(Phone.CONTENT_URI, new String[]{Phone.NUMBER, Phone.DISPLAY_NAME}, null, null, null); but How retrieve using one cursor or passing query one time only.

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  • Can I use a single instance of a delegate to start multiple Asynchronous Requests?

    - by RobV
    Just wondered if someone could clarify the use of BeginInvoke on an instance of some delegate when you want to make multiple asynchronous calls since the MSDN documentation doesn't really cover/mention this at all. What I want to do is something like the following: MyDelegate d = new MyDelegate(this.TargetMethod); List<IAsyncResult> results = new List<IAsyncResult>(); //Start multiple asynchronous calls for (int i = 0; i < 4; i++) { results.Add(d.BeginInvoke(someParams, null, null)); } //Wait for all my calls to finish WaitHandle.WaitAll(results.Select(r => r.AsyncWaitHandle).ToArray()); //Process the Results The question is can I do this with one instance of the delegate or do I need an instance of the delegate for each individual call? Given that EndInvoke() takes an IAsyncResult as a parameter I would assume that the former is correct but I can't see anything in the documentation to indicate either way.

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