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• Redirect print in Python: val = print(arg) to output mixed iterable to file

  - by emcee

  So lets say I have an incredibly nested iterable of lists/dictionaries. I would like to print them to a file as easily as possible. Why can't I just redirect print to a file? val = print(arg) gets a SyntaxError. Is there a way to access stdinput? And why does print take forever with massive strings? Bad programming on my side for outputting massive strings, but quick debugging--and isn't that leveraging the strength of an interactive prompt? There's probably also an easier way than my gripe. Has the hive-mind an answer?

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• Does RTSP live streaming just not work on Android 1.5/1.6?

  - by Aurora

  My main dev phone is a Nexus 1 running 2.2. I have successfully been streaming live video to this device from a Wowza server for several weeks now. I have now taken my application (without modifications) and put it on a Sony Ericsson Xperia running 1.6. The video will not play. I get the following errors: MediaPlayer: Couldn't open file on client side, trying server side ... MediaPlayer: info/warning (1/26) PlayerDriver: Command PLAYER_INIT completed with an error or info PVMFFailure MediaPlayer: Error:(1,-1) VideoView: Error: 1,-1 I've been googling around, but just can't seem to get a clear answer. Does anyone know if live streaming just doesn't work on some versions of Android?

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• How do I detect a change of tab page in TabControl prior to SelectedIndexChanged event?

  - by JYelton

  I currently determine what page of a tabcontrol was clicked on via the SelectedIndexChanged event. I would like to detect before the selected index actually changes, for validation purposes. For example, a user clicks a tab page other than the one they are viewing. A dialog is presented if form data is unsaved and asks if it's ok to proceed. If the user clicks no, I'd like to remain on the current tab. Currently I have to remember the previous tab page and switch back to it after an answer of 'no.' I considered MouseDown (and the assorted calculation logic), but I doubt that's the best way. (This is in .NET C# 3.5)

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• protecting my web page and folder from external using .htaccess and .htpassword in php

  - by Testadmin

  Hai I want to protect a folder (protect) and the files inside that folder. I have created a .htaccess file and put the following code. AuthName "Myfolder" AuthType Basic AuthUserFile url/protect/.htpasswd Require valid-user Also created a .htpassword file which contain username:password When I run my URL http://localhost/url/protect, I got a pop up asking username and password, I entered username as username and password as password. After that I got an error page "server error 500" "The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there was an error in a CGI script. If you think this is a server error, please contact the webmaster." Why this happened?. Any thing wrong here? Anything needs to see my pages under the folder. Please give me the answer.

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• Android: making a custom ListView independent of adapters ?

  - by wei

  I am adding a local database as a cache to a remote web service in my android application to answer queries. I used ArrayAdapters before for list views to display the results from the web service. Now with a database cache, the result could be either a Cursor(from database) or a List(from web), which means the adapter can be CursorAdapter or ArrayAdapter too. Creating two adapters for one query doesn't seem to be a good idea. So I am wondering what would be the best way to refactor my current code to add this database feature? Thanks,

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• Strip All Urls From A Mixed String ( php )

  - by Axel

  Hi, i reposted this question because i didn't find a good answer. i have a string which can contains text with urls. i want a function to strip all urls from this string and just let the text. by example the string can contains like this : 1) hey take a look here : http://xxx.xxx/545df5 this is nice! 2) hey take a look here : http://www.xxx.xxx/545df5 this is nice! 3) hey take a look here : xxx.xxx/545df5 this is nice! 4) hey take a look here : www.xxx.xxx/545df5 this is nice! Thanks

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• how to link table to table

  - by Niño Seymour L. Rodriguez

  I am a comsci student and I'm taking up database now. I got a problem in or should I say I dont know how to link table to table. It is not like you'll just use a foreign key and connect it to the primary key. The outcome should be like this: In the table Course there are three fields namely "course_id", "Description" and "subjects". When you click the name field Subject, a table named Subject should appear. Can you help me with this? hope you understnd my grammar, hehe..im not good in english......it will be a big help if you can answer it.........thank you po..............

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• What is the Simplest Possible Payment Gateway to Implement? (using Django)

  - by b14ck

  I'm developing a web application that will require users to either make one time deposits of money into their account, or allow users to sign up for recurring billing each month for a certain amount of money. I've been looking at various payment gateways, but most (if not all) of them seem complex and difficult to get working. I also see no real active Django projects which offer simple views for making payments. Ideally, I'd like to use something like Amazon FPS, so that I can see online transaction logs, refund money, etc., but I'm open to other things. I just want the EASIEST possible payment gateway to integrate with my site. I'm not looking for anything fancy, whatever does the job, and requires < 10 hours to get working from start to finish would be perfect. I'll give answer points to whoever can point out a good one. Thanks!

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• MySQL Trigger with dynamic table name

  - by Thomas

  I've look around a bit and can't quite find an answer to my problem: I want a trigger to execute after an insert on a table and to take that data that is being inserted and do two things Create a new table from the client id and partner id Insert the 'data' that just was inserted into the new table I am fairly new to the Stored procedures and triggers so I came up with this but am having difficulty debugging it: delimiter $$ CREATE TRIGGER trg_creas_insert BEFORE INSERT ON tracking.creas for each row BEGIN DECLARE @tableName varchar(40); DECLARE @createStmnt mediumtext; SET @tableName = concat('crea_','_', NEW.idClient_crea,'_',NEW.idPartenaire_crea); SET @createStmnt = concat('CREATE TABLE IF NOT EXISTS', @tableName, '( `data_crea` mediumtext NOT NULL ) ENGINE=MyISAM AUTO_INCREMENT=29483330 DEFAULT CHARSET=utf8 PACK_KEYS=0'); PREPARE stmt FROM @createStmnt; EXECUTE stmt; INSERT INTO @tableName (data_crea) values (NEW.data_crea); END$$ delimiter ; Thoughts?

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• AJAX with Ruby on Rails?

  - by Zachary

  This is probably a really dumb question with a simple answer but... I am working on a project where I need to use AJAX to send/receive information. I am using Ruby on Rails (which I am pretty new to), but rather than using the helper methods or the built in functionality in the 'defaults' Javascript file, I need to do this manually in my own Javascript. I believe that ultimately I will want to send a request with a JSON object, then have the controller return another JSON object containing the requested information. The problem is that I cannot seem to find the syntax for sending something to a specific controller method, with parameters, directly from Javascript - everything I Google ends up being tutorials for using the Rails AJAX helper methods.

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• The use of GROUP BY in MySQL

  - by Gustav Bertram

  I'm fishing for a comprehensive and canonical answer for the typical "mysql group by?" question. Here is some sample data: TABLE A +------+------+----------+-----+ | id | foo | bar | baz | +------+------+----------+-----+ | 1 | 1 | hello | 42 | | 2 | 0 | apple | 96 | | 3 | 20 | boot | 11 | | 4 | 31 | unicorn | 99 | | 5 | 19 | pumpkin | 11 | | 6 | 88 | orange | 13 | +------+------+----------+-----+ TABLE B +------+------+ | id | moo | +------+------+ | 1 | 1 | | 2 | 99 | | 3 | 11 | +------+------+ Demonstrate and explain the correct use of the GROUP BY clause in MySQL. Touch upon the following points: The use of MIN, MAX, SUM, AVG The use of HAVING Grouping by date, and ranges of dates Grouping with an ORDER BY Grouping with a JOIN Grouping on multiple columns Bonus points for references to other great answers, the MySQL online manual, and online tutorials on GROUP BY.

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• calculating a gps coordinate given a point, bearing and distance

  - by user530509

  Hello, I have a problem which draws my back in some project for some time now. Im basically looking to trap a polygon using x,y points drawn by some script ive written. lat1,lon1 are the center gps cords of the polygon and im looking for its surrounding polygon. here is a part of my code in python: def getcords(lat1,lon1,dr,bearing): lat2=asin(sin(lat1)*cos(dr)+cos(lat1)*sin(dr)*cos(bearing)) lon2=lon1+atan2(sin(bearing)*sin(dr)*cos(lat1),cos(dr)-sin(lat1)*sin(lat2)) return [lat2,lon2] my input goes like this: lat1,lon1 - are given in decimal degrees. -dr is the angular computed by dividing the distance in miles by the earth's -raiuds(=3958.82) -bearing between 0-360 degrees. however for the input getcorsds1(42.189275,-76.85823,0.5/3958.82,30) i get [-1.3485899508698462, -76.8576637627568], however [42.2516666666667,-76.8097222222222] is the right answer. as for the angular distance i calculate it simply by dividing the distance in miles by the earth's raiuds(=3958.82). anybody?

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• JDO in Google App Engine: order of keys in unowned one-to-many relationship

  - by Kel

  I'm implementing web application with JDO in Google App Engine. According to documentation, in owned one-to-many relationships, order of elements in "owner" object collection is determined either by automatically created index field, or by information given in explicit ordering clause. For example: @PersistenceCapable public class Person { // ... @Order(extensions = @Extension(vendorName="datanucleus", key="list-ordering", value="country asc, city asc")) private List<ContactInfo> contacts = new List<ContactInfo>(); In unowned relationships, "owner" object contains collection of keys of "nested" objects, for example: @PersistenceCapable public class Author { // ... @Persistent private List<Key> books; Is order of keys preserved, if I use List<Key> collection in "owner" object for storing keys of "nested" elements? I could not find answer neither in JDO relationships article, nor in Data Classes article :(

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• Choosing a Wiki for a institute

  - by abhishekgupta92

  I need to choose a Wiki. Please someone help. Following are my requirements: 1) Need good control to the access variables 2) LDAP integration support 3) User Group Support 4) Good Themes and Templates Mediawiki has the problem that it does not support Users Groups that intutively. Twiki and Foswiki have a problem that any authenticated user that has write permissions for a topic also have the write to change the particualar permissions for the topic. Else, can someone suggest me where to look for the answer. I know about the WikiMatrix.

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• Debugging stack data not assigned to a named variable

  - by gibbss

  Is there a way to view stack elements like un-assigned return values or exceptions that not assigned to a local variable? (e.g. throw new ...) For example, suppose I have code along the lines of: public String foo(InputStream in) throws IOException { NastyObj obj = null; try { obj = new NastyObj(in); return (obj.read()); } finally { if (obj != null) obj.close(); } } Is there any way to view the return or exception value without stepping to a higher level frame where it is assigned? This is particularly relevant with exceptions because you often have to step back up through a number of frames to find an actual handler. I usually use the Eclipse debugging environment, but any answer is appreciated. Also, if this cannot be done, can you explain why? (JVM, JPDA limitation?)

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• Apache HttpClient making multipart form post

  - by Russ

  I'm pretty green to HttpClient and I'm finding the lack of (and or blatantly incorrect) documentation extremely frustrating. I'm trying to implement the following post (listed below) with Apache Http Client, but have no idea how to actually do it. I'm going to bury myself in documentation for the next week, but perhaps more experienced HttpClient coders could get me an answer sooner. Post: Content-Type: multipart/form-data; boundary=---------------------------1294919323195 Content-Length: 502 -----------------------------1294919323195 Content-Disposition: form-data; name="number" 5555555555 -----------------------------1294919323195 Content-Disposition: form-data; name="clip" rickroll -----------------------------1294919323195 Content-Disposition: form-data; name="upload_file"; filename="" Content-Type: application/octet-stream -----------------------------1294919323195 Content-Disposition: form-data; name="tos" agree -----------------------------1294919323195--

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• Excel - check if row contains ANY value *more than once*

  - by user2536778

  I am doing data analysis and sometimes I need to check and to make sure each row in excel does not have any repeated value. I hope that there is a formula where each time if there's a repeated value in the same row, the value will be highlighted and it doesn't matter what value it is, as long as it's repeated in the same row. I try to search it everywhere but the closest I can find is below question & answer ( which couldn't apply to me as I need a formula that can highlight any value that's repeated and not only zero): I have rows which contain grades for students (numerical values), where the number 0 means they missed a class. I want the row to be highlighted in one color if they have "0" 3 or 4 times, and in another color if they have "0" 5 times or more. =COUNTIF(1:1,0)=5 Anyone can help me? Thanks in advance!

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• How to JSON serialize math vector type in F#?

  - by The_Ghost

  Hello! I'm trying to serialize "vector" (Microsoft.FSharp.Math) type. And I get that error: Exception Details: System.Runtime.Serialization.SerializationException: Type 'Microsoft.FSharp.Math.Instances+FloatNumerics@115' with data contract name 'Instances.FloatNumerics_x0040_115:http://schemas.datacontract.org/2004/07/Microsoft.FSharp.Math' is not expected. Add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer. I have tried to put KnownType attribute and some other stuff, but nothing helps! Could someone know the answer? This is the code I use: // [< KnownType( typeof<vector> ) >] type MyType = vector let public writeTest = let aaa = vector [1.1;2.2] let serializer = new DataContractJsonSerializer( typeof<MyType> ) let writer = new StreamWriter( @"c:\test.txt" ) serializer.WriteObject(writer.BaseStream, aaa) writer.Close()

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• How do you deal with duplicate street suffixes?

  - by Matt

  I have a system where users need to enter addresses. I am trying to limit duplicates of course and something I started noticing was becoming a big problem was some users putting in "Road" and others "Rd", therefore duplicates were creeping in. I looked up the list of USPS street suffix abbreviations but I still have a question which I can't find an answer to. Can I replace all words in a street address with the USPS standard abbreviation? An example would be "123 Forest Hill Road". If I were to replace it with the abbreviations it would then be "123 Frst Hl Rd" or does the "street suffix" that USPS is referring to mean they only want you to make go as far as "123 Forest Hill Rd"?

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• Twitter Authentication through Android's AccountManager classes.

  - by Robby Pond

  I am working on a twitter based app and am trying to incorporate Android's built-in Account support for Twitter. The following code works to popup the confirmation dialog for my app to access twitter but I am unsure of what to pass in as the authenticationType. Any help would be appreciated. I've googled all over the place and can't seem to find the correct answer. It goes in place of "oauth" below. AccountManager am = AccountManager.get(this); Account[] accts = am.getAccountsByType(TWITTER_ACCOUNT_TYPE); if(accts.length > 0) { Account acct = accts[0]; am.getAuthToken(acct, "oauth"/*what goes here*/, null, this, new AccountManagerCallback<Bundle>() { @Override public void run(AccountManagerFuture<Bundle> arg0) { try { Bundle b = arg0.getResult(); Log.e("TrendDroid", "THIS AUTHTOKEN: " + b.getString(AccountManager.KEY_AUTHTOKEN)); } catch (Exception e) { Log.e("TrendDroid", "EXCEPTION@AUTHTOKEN"); } }}, null); }

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• Flex LineChart with Multiple Data Providers

  - by Jeremy Mitchell

  Can I create a LineChart with multiple data providers? Since LineSeries has a dataprovider property, I'm assuming the answer is Yes. I would expect something like this to work: <LineChart>     <series>         <LineSeries dataprovider="{dp1}"/>         <LineSeries dataprovider="{dp2}"/>         <LineSeries dataprovider="{dp3}"/>     </series> </LineChart> But, the LineChart only appears to work for me when the dataprovider is assigned to the LineChart. Thanks.

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• SHA-256 encryption wrong result in Android

  - by user642966

  I am trying to encrypt 12345 using 1111 as salt using SHA-256 encoding and the answer I get is: 010def5ed854d162aa19309479f3ca44dc7563232ff072d1c87bd85943d0e930 which is not same as the value returned by this site: http://hash.online-convert.com/sha256-generator Here's the code snippet: public String getHashValue(String entity, String salt){ byte[] hashValue = null; try { MessageDigest digest = MessageDigest.getInstance("SHA-256"); digest.update(entity.getBytes("UTF-8")); digest.update(salt.getBytes("UTF-8")); hashValue = digest.digest(); } catch (NoSuchAlgorithmException e) { Log.i(TAG, "Exception "+e.getMessage()); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } return BasicUtil.byteArrayToHexString(hashValue); } I have verified my printing method with a sample from SO and result is fine. Can someone tell me what's wrong here? And just to clarify - when I encrypt same value & salt in iOS code, the returned value is same as the value given by the converting site.

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• Regex to allow all php files except one

  - by Tim

  Hi all, I have this regex that allow all php files : ^.*\.([Pp][Hh][Pp]) how can I exclude a specific file, for example test.php ? Thanks for your answer, Best regards [edit] I omit to say that it is a reg from a htaccess file, the /i doesn't seems to work, and the ? neither. [Edit2] the purpose is to grant access to authenticated users, except for one file that has to be allowed for everyone. So I've done : <Files ~ "^.*\.([Pp][Hh][Pp])$"> AuthUserFile /directory/.htpasswd AuthGroupFile /dev/null AuthName "Please log in ..." AuthType Basic require valid-user </Files> So, all php files require valid user. I would like to add an exception for a specific file, says test.php

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• Should I practice "mockist" or "classical" TDD?

  - by Daryl Spitzer

  I've read (and re-read) Martin Fowler's Mocks Aren't Stubs. In it, he defines two different approaches to TDD: "Classical" and "Mockist". He attempts to answer the question "So should I be a classicist or a mockist?", but he admits that he has never tried mockist TDD on "anything more than toys." So I thought I'd ask the question here. Good answers may repeat Fowler's arguments (but hopefully more clearly) or add arguments that he didn't think of or that others have come up with since Fowler last updated the essay back in January 2007.

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• ASP.net application advice needed

  - by c11ada

  hey all, im biulding a ASP.net application, which is connected to a database. the database design is as follows **Users Table** UserID `(PK) autonumber` Username **Question Table** QuestionID `(PK) autonumber` QuestionNumber QuestionText **Questionnaire Table** QuestionnaireID `(PK) autonumber` UserID `(FK) User Table` Date **Feedback Table** FeedbackID `(PK) autonumber` QuestionnaireID `(FK) Questionnaire Table` QuestionID `(FK) Questions Table` Answer Comment please can some one advise me on how I should go about inserting data into the questionnaire table and the feedback table. I know that the questionnaire table needs to be updated first. but the Questionnaire ID is linked to the feedback table, so how do I go about updating both tables ?

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