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• Python: Why can't I use `super` on a class?

  - by cool-RR

  Why can't I use super to get a method of a class's superclass? Example: Python 3.1.3 >>> class A(object): ... def my_method(self): pass >>> class B(A): ... def my_method(self): pass >>> super(B).my_method Traceback (most recent call last): File "<pyshell#2>", line 1, in <module> super(B).my_method AttributeError: 'super' object has no attribute 'my_method' (Of course this is a trivial case where I could just do A.my_method, but I needed this for a case of diamond-inheritance.) According to super's documentation, it seems like what I want should be possible. This is super's documentation: (Emphasis mine) super() - same as super(__class__, <first argument>) super(type) - unbound super object super(type, obj) - bound super object; requires isinstance(obj, type) super(type, type2) - bound super object; requires issubclass(type2, type) [non-relevant examples redacted]

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• Issue Calculating from Rows and Columns(Summing two columns with the third of a different row)

  - by vstsdev

  With reference to my previous question Adding columns resulting from GROUP BY clause SELECT AcctId,Date, Sum(CASE WHEN DC = 'C' THEN TrnAmt ELSE 0 END) AS C, Sum(CASE WHEN DC = 'D' THEN TrnAmt ELSE 0 END) AS D FROM Table1 where AcctId = '51' GROUP BY AcctId,Date ORDER BY AcctId,Date I executed the above query and got my desired result.. AcctId Date C D 51 2012-12-04 15000 0 51 2012-12-05 150000 160596 51 2012-12-06 600 0 now I have a another operation to do on the same query i.e. I need the result to be like this AcctId Date Result 51 2012-12-04 (15000-0)-> 15000 51 2012-12-05 (150000-160596) + (15000->The first value) 4404 51 2012-12-06 600-0 +(4404 ->The calculated 2nd value) 5004 Is it possible with the same query??.

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• Using XStream to deserialize an XML response with separate "success" and "failure" forms?

  - by Chris Markle

  I am planning on using XStream with Java to convert between objects and XML requests and XML responses and objects, where the XML is flowing over HTTP/HTTPS. On the response side, I can get a "successful" response, which seems like it would map to one Java class, or a "failure" response, which seems like it would map to another Java class. For example, for a "file list" request, I could get an affirmative response e.g., <?xml version="1.0" encoding="UTF-8"?> <response> <success>true</success> <files> <file>[...]</file> <file>[...]</file> <file>[...]</file> </files> </response> or I could get a negative response e.g., <?xml version="1.0" encoding="UTF-8"?> <response> <success>false</success> <error> <errorCode>-502</errorCode> <systemMessage>[...]AuthenticationException</systemMessage> <userMessage>Not authenticated</userMessage> </error> </response> To handle this, should I include fields in one class for both cases or should I somehow use XStream to "conditionally" create one of the two potential classes? The case with fields from both response cases in the same object would look something like this: Class Response { boolean success; ArrayList<File> files; ResponseError error; [...] } Class File { String name; long size; [...] } Class ResponseError { int errorCode; String systemMessage; String userMessage; [...] } I don't know what the "use XStream and create different objects in case of success or error" looks like. Is it possible to do that somehow? Is it better or worse way to go? Anyway, any advice on how to handle using XStream to deal with this success vs. failure response case would be appreciated. Thanks in advance!

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• sed regex to match ['', 'WR' or 'RN'] + 2-4 digits

  - by Karl

  Hi I'm trying to do some conditional text processing on Unix and struggling with the syntax. I want to acheive Find the first 2, 3 or 4 digits in the string if 2 characters before the found digits are 'WR' (could also be lower case) Variable = the string we've found (e.g. WR1234) Type = "work request" else if 2 characters before the found digits are 'RN' (could also be lower case) Variable = the string we've found (e.g. RN1234) Type = "release note" else Variable = "WR" + the string we've found (Prepend 'WR' to the digits) Type = "Work request" fi fi I'm doing this in a Bash shell on Red Hat Enterprise Linux Server release 5.5 (Tikanga) Thanks in advance, Karl

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• Dictionary with delegate or swith?

  - by Samvel Siradeghyan

  Hi, I am writting a parser, which call some functions dependent on some value. I can implement this logic with simple switch like this swith(some_val) { case 0: func0(); break; case 1: func1(); break; } or with delegates and dictinary like this delegate void some_delegate(); Dictinary some_dictinary = new Dictinary(); some_dictinary[0] = func0; some_dictinary[1] = func1; some_dictinary[some_value].Invoke(); Are this two metods equal and wich is prefered? Thanks.

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• Using Include() with inherited entities problem

  - by Peter Stegnar

  In EF eager loading related entities is easy. But I'm having difficulties including inherited entities when loading data using table-per-type model. This is my model: Entities: ArticleBase (base article entity) ArticleSpecial (inherited from ArticleBase) UserBase (base user entity) UserSpecial (inherited from UserBase) Image Relations are as shown on the image (omitting many columns): In reality my users are always of type UserSpecial, since UserBase is used in another application, thus we can share credentials. That's the only reason I have two separate tables. UserBase table can't be changed in any way shape or form, because the other app would break. Question How am I suppose to load ArticleSpecial with both CreatedBy and EditedBy set, so that both are of type UserSpecial (that defines Image relation)? I've tried (unsuccessfully though) these options: 1. Using lambda expressions: context.ArticleBases .OfType<ArticleSpecial>() .Include("UserCreated.Image") .Include("UserEdited.Image"); In this case the problem is that both CreatedBy and EditedBy are related to UserBase, that doesn't define Image navigation. So I should somehow cast these two to UserSpecial type like: context.ArticleBases .OfType<ArticleSpecial>() .Include("UserCreated<UserSpecial>.Image") .Include("UserEdited<UserSpecial>.Image"); But of course using generics in Include("UserCreated<UserSpecial>.Image") don't work. 2. I have tried using LINQ query var results = from articleSpecial in ctx.ArticleBase.OfType<ArticleSpecial>() join created in ctx.UserBase.OfType<UserSpecial>().Include("Image") on articleSpecial.UserCreated.Id equals created.Id join edited in ctx.UserBase.OfType<UserSpecial>().Include("Image") on articleSpecial.UserEdited.Id equals edited.Id select articleSpecial; In this case I'm only getting ArticleSpecial object instances without related properties being set. I know I should select those somehow, but I don't know how? Select part in my LINQ could be changed to something like select new { articleSpecial, articleSpecial.UserCreated, articleSpecial.UserEdited }; but images are still not loaded into my context. My joins in this case are barely used to filter out articleSpecial results, but they don't load entities into context (I suppose). Can anybody provide any help regarding this problem? I think it's not so uncommon.

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• Can Hibernate automatically uppercase a column on read/insert via configuration?

  - by T Reddy

  We have some columns with data that must always be in uppercase to ensure uniqueness. I was wondering if hibernate can force all such columns to uppercase via some configuration file change? We actually use a custom UserType for encrypting/decrypting column data for some other table, but I figured that would be overkill just to uppercase everything... Alternatively, I was thinking about modifying the models such that all getters/setters will uppercase any string coming and going. The worst(?) case scenario is to modify the Oracle column constraint to ignore case while checking uniqueness. Any thoughts?

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• Regular Expressions: Positive Lookahead and Word Border question

  - by Inf.S

  Hello again Stackoverflow people! Assume I have these words: smartphones, smartphone I want to match the substring "phone" from within them. However, in both case, I want only "phone" to be returned, not "phones" in the first case. In addition to this, I want matches only if the word "phone" is a suffix only, such that: fonephonetics (just an example) is not matched. I assumed that the regex (phone([?=s])?)\b would give me what I need, but it is currently matching "phones" and "phone", but not the "fonephonetics" one. I don't need "phones". I want "phone" for both cases. Any ideas about what is wrong, and what I can do? Thank you in advance!

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• Get the ranking of highest score with earliest timestamp

  - by Billy

  I have the following records: name score Date Billy 32470 12/18/2010 7:26:35 PM Sally 1100 12/19/2010 12:00:00 AM Kitty 1111 12/21/2010 12:00:00 AM Sally 330 12/21/2010 8:23:34 PM Daisy 32460 12/22/2010 3:10:09 PM Sally 32460 12/23/2010 4:51:11 PM Kitty 32440 12/24/2010 12:00:27 PM Billy 32460 12/24/2010 12:11:36 PM I want to get the leaderboard of the highest score with earliest time stamp using LINQ. In this case, the correct one is rank name 1 Billy 2 Daisy 3 Sally I use the following query: var result = (from s in Submissions group s by s.name into g orderby g.Max(q => q.Score) descending,g.Min(q => q.Date) ascending select new ScoreRecord { name = g.Key Score = g.Max(q => q.Score) }).Take(3).ToList(); I get the following wrong result: rank name 1 Billy 2 Sally 3 Daisy What's the correct linq query in this case?

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• Threading extra state through a parser in Scala

  - by Travis Brown

  I'll give you the tl;dr up front I'm trying to use the state monad transformer in Scalaz 7 to thread extra state through a parser, and I'm having trouble doing anything useful without writing a lot of t m a -> t m b versions of m a -> m b methods. An example parsing problem Suppose I have a string containing nested parentheses with digits inside them: val input = "((617)((0)(32)))" I also have a stream of fresh variable names (characters, in this case): val names = Stream('a' to 'z': _*) I want to pull a name off the top of the stream and assign it to each parenthetical expression as I parse it, and then map that name to a string representing the contents of the parentheses, with the nested parenthetical expressions (if any) replaced by their names. To make this more concrete, here's what I'd want the output to look like for the example input above: val target = Map( 'a' -> "617", 'b' -> "0", 'c' -> "32", 'd' -> "bc", 'e' -> "ad" ) There may be either a string of digits or arbitrarily many sub-expressions at a given level, but these two kinds of content won't be mixed in a single parenthetical expression. To keep things simple, we'll assume that the stream of names will never contain either duplicates or digits, and that it will always contain enough names for our input. Using parser combinators with a bit of mutable state The example above is a slightly simplified version of the parsing problem in this Stack Overflow question. I answered that question with a solution that looked roughly like this: import scala.util.parsing.combinator._ class ParenParser(names: Iterator[Char]) extends RegexParsers { def paren: Parser[List[(Char, String)]] = "(" ~> contents <~ ")" ^^ { case (s, m) => (names.next -> s) :: m } def contents: Parser[(String, List[(Char, String)])] = "\\d+".r ^^ (_ -> Nil) | rep1(paren) ^^ ( ps => ps.map(_.head._1).mkString -> ps.flatten ) def parse(s: String) = parseAll(paren, s).map(_.toMap) } It's not too bad, but I'd prefer to avoid the mutable state. What I want Haskell's Parsec library makes adding user state to a parser trivially easy: import Control.Applicative ((*>), (<$>), (<*)) import Data.Map (fromList) import Text.Parsec paren = do (s, m) <- char '(' *> contents <* char ')' h : t <- getState putState t return $ (h, s) : m where contents = flip (,) [] <$> many1 digit <|> (\ps -> (map (fst . head) ps, concat ps)) <$> many1 paren main = print $ runParser (fromList <$> paren) ['a'..'z'] "example" "((617)((0)(32)))" This is a fairly straightforward translation of my Scala parser above, but without mutable state. What I've tried I'm trying to get as close to the Parsec solution as I can using Scalaz's state monad transformer, so instead of Parser[A] I'm working with StateT[Parser, Stream[Char], A]. I have a "solution" that allows me to write the following: import scala.util.parsing.combinator._ import scalaz._, Scalaz._ object ParenParser extends ExtraStateParsers[Stream[Char]] with RegexParsers { protected implicit def monadInstance = parserMonad(this) def paren: ESP[List[(Char, String)]] = (lift("(" ) ~> contents <~ lift(")")).flatMap { case (s, m) => get.flatMap( names => put(names.tail).map(_ => (names.head -> s) :: m) ) } def contents: ESP[(String, List[(Char, String)])] = lift("\\d+".r ^^ (_ -> Nil)) | rep1(paren).map( ps => ps.map(_.head._1).mkString -> ps.flatten ) def parse(s: String, names: Stream[Char]) = parseAll(paren.eval(names), s).map(_.toMap) } This works, and it's not that much less concise than either the mutable state version or the Parsec version. But my ExtraStateParsers is ugly as sin—I don't want to try your patience more than I already have, so I won't include it here (although here's a link, if you really want it). I've had to write new versions of every Parser and Parsers method I use above for my ExtraStateParsers and ESP types (rep1, ~>, <~, and |, in case you're counting). If I had needed to use other combinators, I'd have had to write new state transformer-level versions of them as well. Is there a cleaner way to do this? I'd love to see an example of a Scalaz 7's state monad transformer being used to thread state through a parser, but Scala 6 or Haskell examples would also be useful.

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• AS3: Weak Listener References Not Appropriate During Initialization?

  - by TheDarkIn1978

  as i currently understand, if an event listener is added to an object with useWeakReference set to true, then it is eligible for garbage collection and will be removed if and when the garbage collection does a sweep. public function myCustomSpriteClass() //constructor { this.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownListener, false, 0, true); this.addEventListener(MouseEvent.MOUSE_UP, mouseUpListener, false, 0, true); } in this case, is it not appropriate to initialize an object with weak references event listeners, incase the garbage collector does activate a sweep removing the objects event listeners since they were added during initialization of the object? in this case, would it only be appropriate to create a type of deallocate() method which removes the event listeners before the object is nullified?

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• Using string[] as a Dictionary key e.g. Dictionary<string[], StringBuilder>

  - by Nick Allen - Tungle139

  The structure I am trying to achieve is a composite Dictionary key which is item name and item displayname and the Dictionary value being the combination of n strings So I came up with var pages = new Dictionary<string[], StringBuilder>() { { new string[] { "food-and-drink", "Food & Drink" }, new StringBuilder() }, { new string[] { "activities-and-entertainment", "Activities & Entertainment" }, new StringBuilder() } }; foreach (var obj in my collection) { switch (obj.Page) { case "Food": case "Drink": pages["KEY"].Append("obj.PageValue"); break; ... } } The part I am having trouble with is accessing the Dictionary Key pages["KEY"] How do I target the Dictionary Key whose value at [0] == some value? Hope that makes sense

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• JMS Topic vs Queue - Intent

  - by Sandeep Jindal

  I am trying to understand on the design requirements for using Queue, and could not find this question (with answer). My understanding: Queue means one-to-one. Thus it would be used in a special case (if not rare, very few cases) when a designer is sure that the message would be intended for only one consumer. But even in those cases, I may want to use Topic (just to be future safe). The only extra case I would have to do is to make (each) subscription durable. Or, I special situations, I would use bridging / dispatcher mechanism. Give above, I would always (or in most cases) want to publish to a topic. Subscriber can be either durable topic(s) or dispatched queue(s). Please let me know what I am missing here or I am missing the original intent?

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• How to do this NHibernate one-to-one mapping?

  - by JMSA

  This is a problem of unidirectional one-to-one mapping in NHibernate. Student.cs public class Student { public int ID { get; set; } public int Roll { get; set; } public int RegNo { get; set; } public string Name { get; set; } public StudentDetail StudentDetail { get; set; } } StudentDetail.cs public class StudentDetail { public int ID { get; set; } public string Father { get; set; } public string Mother { get; set; } } How can I map these classes (how do the hbm mapping files look like) to the following two distinct cases of one-to-one relationships? 1st case: 2nd case:

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• Using android gesture on top of menu buttons

  - by chriacua

  What I want is to have an options menu where the user can choose to navigate the menu between: 1) touching a button and then pressing down on the trackball to select it, and 2) drawing predefined gestures from Gestures Builder As it stands now, I have created my buttons with OnClickListener and the gestures with GestureOverlayView. Then I select starting a new Activity depending on whether the using pressed a button or executed a gesture. However, when I attempt to draw a gesture, it is not picked up. Only pressing the buttons is recognized. The following is my code: public class Menu extends Activity implements OnClickListener, OnGesturePerformedListener { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //create TextToSpeech myTTS = new TextToSpeech(this, this); myTTS.setLanguage(Locale.US); //create Gestures mLibrary = GestureLibraries.fromRawResource(this, R.raw.gestures); if (!mLibrary.load()) { finish(); } // Set up click listeners for all the buttons. View playButton = findViewById(R.id.play_button); playButton.setOnClickListener(this); View instructionsButton = findViewById(R.id.instructions_button); instructionsButton.setOnClickListener(this); View modeButton = findViewById(R.id.mode_button); modeButton.setOnClickListener(this); View statsButton = findViewById(R.id.stats_button); statsButton.setOnClickListener(this); View exitButton = findViewById(R.id.exit_button); exitButton.setOnClickListener(this); GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures); gestures.addOnGesturePerformedListener(this); } public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) { ArrayList<Prediction> predictions = mLibrary.recognize(gesture); // We want at least one prediction if (predictions.size() > 0) { Prediction prediction = predictions.get(0); // We want at least some confidence in the result if (prediction.score > 1.0) { // Show the gesture Toast.makeText(this, prediction.name, Toast.LENGTH_SHORT).show(); //User drew symbol for PLAY if (prediction.name.equals("Play")) { myTTS.shutdown(); //connect to game // User drew symbol for INSTRUCTIONS } else if (prediction.name.equals("Instructions")) { myTTS.shutdown(); startActivity(new Intent(this, Instructions.class)); // User drew symbol for MODE } else if (prediction.name.equals("Mode")){ myTTS.shutdown(); startActivity(new Intent(this, Mode.class)); // User drew symbol to QUIT } else { finish(); } } } } @Override public void onClick(View v) { switch (v.getId()){ case R.id.instructions_button: startActivity(new Intent(this, Instructions.class)); break; case R.id.mode_button: startActivity(new Intent(this, Mode.class)); break; case R.id.exit_button: finish(); break; } } Any suggestions would be greatly appreciated!

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• Dictionary with delegate or switch?

  - by Samvel Siradeghyan

  Hi, I am writing a parser, which call some functions dependent on some value. I can implement this logic with simple switch like this switch(some_val) { case 0: func0(); break; case 1: func1(); break; } or with delegates and dictionary like this delegate void some_delegate(); Dictionary<int, some_delegate> some_dictionary = new Dictionary<int, some_delegate>(); some_dictionary[0] = func0; some_dictionary[1] = func1; some_dictionary[some_value].Invoke(); Are this two methods equal and which is preferred? Thanks.

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• jQuery SlideDown Flickering in Firefox

  - by Sithlord

  Hi, once more a jQuery, Firefox flickering issue. (no flickering in IE6/7/8, Safari) I uploaded an example page here: http://sithlord.bplaced.net/testing/jquery_flickering/flickering.html There are two div containers. The inner div is the one I'm hiding. The outer one is the wraping container with the style elements. I found the flicker only occur with the selectbox. Without the SelectBox there is no flickering. But thats not all: (I cant post a second hyperlink: its the same link as above; only change "flickering.html" to not_flickering.html) In this case I selected a lower "option" - as you can see, the flicker disappears in this case. The same is happending, when there are less options in total. (less then about 20) The only workaround I found is deleting the selectbox :) Any ideas, why this is happening and how to fix it? Thanks!

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• django 1.1 beta issue

  - by ha22109

  Hello all, I m using django 1.1 beta.I m facing porblem in case of list_editable.First it was throughing exception saying need ordering in case of list_editable" then i added ordering in model but know it is giving me error.The code is working fine with django1.1 final. here is my code model.py class User(models.Model): advertiser = models.ForeignKey(WapUser,primary_key=True) status = models.CharField(max_length=20,choices=ADVERTISER_INVITE_STATUS,default='invited') tos_version = models.CharField(max_length=5) contact_email = models.EmailField(max_length=80) contact_phone = models.CharField(max_length=15) contact_mobile = models.CharField(max_length=15) contact_person = models.CharField(max_length=80) feedback=models.BooleanField(choices=boolean_choices,default=0) def __unicode__(self): return self.user.login class Meta: db_table = u'roi_advertiser_info' managed=False ordering=['feedback',] admin.py class UserAdmin(ReadOnlyAdminFields, admin.ModelAdmin): list_per_page = 15 fields = ['advertiser','contact_email','contact_phone','contact_mobile','contact_person'] list_display = ['advertiser','contact_email','contact_phone','contact_mobile','contact_person','status','feedback'] list_editable=['feedback'] readonly = ('advertiser',) search_fields = ['advertiser__login_id'] radio_fields={'approve_auto': admin.HORIZONTAL} list_filter=['status','feedback'] admin.site.register(User,UserADmin)

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• Is it possible to use Regex through Hexadecimal to find email addresses

  - by LukeJenx

  Not sure if this is even possible but I have been looking at using Regex to get an email address that is in Hex. Basically this is to build up some of my automated forensic tools but I am having problems on making a suitable Regex algorithm. Regex for email: /^([a-z0-9_.-]+)@([\da-z.-]+).([a-z.]{2,6})$/ Hex values: @ = 40 . = 2E .com = 636f6d _ = 5f A/a = 41/61 [1] Z/z = 5a/7a - = 2d This is what I have got at the moment (it only takes into account lower case and .com). But it doesn't work! Have I messed something simple up? "/^([61-7a]+)40([61-7a]+)23(636f6d)$/" [1] I know email can only be lower case but I need to take uppercase into account too.

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• C# Lambda Expression Speed

  - by Nathan

  I have not used many lambda expressions before and I ran into a case where I thought I could make slick use of one. I have a custom list of ~19,000 records and I need to find out if a record exists or not in the list so instead of writing a bunch of loops or using linq to go through the list I decided to try this: for (int i = MinX; i <= MaxX; ++i) { tempY = MinY; while (tempY <= MaxY) { bool exists = myList.Exists(item => item.XCoord == i && item.YCoord == tempY); ++tempY; } } Only problem is it take ~9 - 11 seconds to execute. Am I doing something wrong is this just a case of where I shouldn't be using an expression like this? Thanks.

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• dynamic char array sizing

  - by droseman

  Hello, In my application, I have a char array defined which can take one of three options: "okay", "high", "low" which are then sent down a serial port to a remote device. I currently have the array sized to take the 4 character words plus carriage return and line feed, but when I have to send "low" I get a null character in the strings, which I am concerned would confuse the host terminal. array definition char mod1_status_char[6] = {'0','0','0','0','0','0'}; char mod2_status_char[6] = {'0','0','0','0','0','0'}; char mod3_status_char[6] = {'0','0','0','0','0','0'}; sample of switch case statement: void DCOKStatus(uint8_t *ptr_status) { uint8_t status = *ptr_status; switch (status) { case 0x00: strcpy(mod1_status_char, "okay"); strcpy(mod2_status_char, "okay"); strcpy(mod3_status_char, "okay"); break; case 0x10: strcpy(mod1_status_char, "okay"); strcpy(mod2_status_char, "okay"); strcpy(mod3_status_char, "low"); break; } This is the struct which makes the message string to send strcpy(MsgStatus_on.descriptor_msg, "$psu_"); MsgStatus_on.address01 = hex_addr[0]; MsgStatus_on.address02 = hex_addr[1]; MsgStatus_on.space01 = 0x20; strcpy(MsgStatus_on.cmdmsg01, "op_en op1_"); strcpy(MsgStatus_on.statusmsg01, mod1_status_char); MsgStatus_on.space02 = 0x20; strcpy(MsgStatus_on.cmdmsg02, "op2_"); strcpy(MsgStatus_on.statusmsg02, mod2_status_char); MsgStatus_on.space03 = 0x20; strcpy(MsgStatus_on.cmdmsg03, "op3_"); strcpy(MsgStatus_on.statusmsg03, mod3_status_char); MsgStatus_on.CR = 0x0D; MsgStatus_on.LF = 0x0A; and this sends the message void USARTWrite(char *object, uint32_t size) { GPIO_SetBits(GPIOB, GPIO_Pin_1); char *byte; for (byte = object; size--; ++byte) { USART_SendData(USART1,*byte); } Would anyone be able to suggest a good approach to dynamically size the array to one character shorter when I need to send "low"? Thanks

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• Google Hybrid OpenID+OAuth with dotnetopenauth

  - by Max Favilli

  I have spent probably more than 10 hours in the last two days trying to understand how to implement user login with Google Hybrid OpenID+OAuth (Federated Login) To trigger the authorization request I use: InMemoryOAuthTokenManager tm = new InMemoryOAuthTokenManager( ConfigurationManager.AppSettings["googleConsumerKey"], ConfigurationManager.AppSettings["googleConsumerSecret"]); using (OpenIdRelyingParty openid = new OpenIdRelyingParty()) { Realm realm = HttpContext.Current.Request.Url.Scheme + Uri.SchemeDelimiter + ConfigurationManager.AppSettings["googleConsumerKey"] + "/"; IAuthenticationRequest request = openid.CreateRequest(identifier, Realm.AutoDetect, new Uri(HttpContext.Current.Request.Url.Scheme + "://" + HttpContext.Current.Request.Url.Authority + "/OAuth/google")); var authorizationRequest = new AuthorizationRequest { Consumer = ConfigurationManager.AppSettings["googleConsumerKey"], Scope = "https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/plus.me", }; request.AddExtension(authorizationRequest); request.AddExtension(new ClaimsRequest { Email = DemandLevel.Request, Gender = DemandLevel.Require }); request.RedirectToProvider(); } To retrieve the accesstoken I use: using (OpenIdRelyingParty openid = new OpenIdRelyingParty()) { IAuthenticationResponse authResponse = openid.GetResponse(); if (authResponse != null) { switch (authResponse.Status) { case AuthenticationStatus.Authenticated: HttpContext.Current.Trace.Write("AuthenticationStatus", "Authenticated"); FetchResponse fr = authResponse.GetExtension<FetchResponse>(); InMemoryOAuthTokenManager tm = new InMemoryOAuthTokenManager(ConfigurationManager.AppSettings["googleConsumerKey"], ConfigurationManager.AppSettings["googleConsumerSecret"]); ServiceProviderDescription spd = new ServiceProviderDescription { spd.RequestTokenEndpoint = new DotNetOpenAuth.Messaging.MessageReceivingEndpoint("https://accounts.google.com/o/oauth2/token", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest); spd.AccessTokenEndpoint = new DotNetOpenAuth.Messaging.MessageReceivingEndpoint("https://accounts.google.com/o/oauth2/token", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest); spd.UserAuthorizationEndpoint = new DotNetOpenAuth.Messaging.MessageReceivingEndpoint("https://accounts.google.com/o/oauth2/auth?access_type=offline", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest); spd.TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() }; WebConsumer wc = new WebConsumer(spd, tm); AuthorizedTokenResponse accessToken = wc.ProcessUserAuthorization(); if (accessToken != null) { HttpContext.Current.Trace.Write("accessToken", accessToken.ToString()); } else { } break; case AuthenticationStatus.Canceled: HttpContext.Current.Trace.Write("AuthenticationStatus", "Canceled"); break; case AuthenticationStatus.Failed: HttpContext.Current.Trace.Write("AuthenticationStatus", "Failed"); break; default: break; } } } Unfortunatelly I get AuthenticationStatus.Authenticated but wc.ProcessUserAuthorization() is null. What am I doing wrong? Thanks a lot for any help.

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• Handling android player errors

  - by stack hoss

  I am anew android developer and i made ashoutcast radio player and work good but when i open app it work for afew time but suddenly stop and need to press stop and play again but i need Handling android player errors to automatic restart on errors package com.test.test; import java.io.IOException; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.app.Service; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.media.AudioManager; import android.media.AudioManager.OnAudioFocusChangeListener; import android.media.MediaPlayer; import android.os.IBinder; import android.preference.PreferenceManager; import android.util.Log; public class StreamService extends Service { private static final String TAG = "StreamService"; MediaPlayer mp; boolean isPlaying; Intent MainActivity; SharedPreferences prefs; SharedPreferences.Editor editor; Notification n; NotificationManager notificationManager; // Change this int to some number specifically for this app int notifId = 85; private OnAudioFocusChangeListener focusChangeListener = new OnAudioFocusChangeListener() { public void onAudioFocusChange(int focusChange) { switch (focusChange) { case (AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK) : // Lower the volume while ducking. mp.setVolume(0.2f, 0.2f); break; case (AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) : mp.pause(); break; case (AudioManager.AUDIOFOCUS_LOSS) : mp.stop(); break; case (AudioManager.AUDIOFOCUS_GAIN) : // Return the volume to normal and resume if paused. mp.setVolume(1f, 1f); mp.start(); break; default: break; } } }; @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; } @SuppressWarnings("deprecation") @Override public void onCreate() { super.onCreate(); Log.d(TAG, "onCreate"); // Init the SharedPreferences and Editor prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); editor = prefs.edit(); // Set up the buffering notification notificationManager = (NotificationManager) getApplicationContext() .getSystemService(NOTIFICATION_SERVICE); Context context = getApplicationContext(); String notifTitle = context.getResources().getString(R.string.app_name); String notifMessage = context.getResources().getString(R.string.buffering); n = new Notification(); n.icon = R.drawable.ic_launcher; n.tickerText = "Buffering"; n.when = System.currentTimeMillis(); Intent nIntent = new Intent(context, MainActivity.class); nIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP); PendingIntent pIntent = PendingIntent.getActivity(context, 0, nIntent, 0); n.setLatestEventInfo(context, notifTitle, notifMessage, pIntent); notificationManager.notify(notifId, n); // It's very important that you put the IP/URL of your ShoutCast stream here // Otherwise you'll get Webcom Radio String url = "http://47.182.19.93:9888/"; mp = new MediaPlayer(); mp.setAudioStreamType(AudioManager.STREAM_MUSIC); try { mp.reset(); mp.setDataSource(url); mp.prepare(); mp.start(); } catch (IllegalArgumentException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (SecurityException e) { // TODO Auto-generated catch block Log.e(TAG, "SecurityException"); } catch (IllegalStateException e) { // TODO Auto-generated catch block Log.e(TAG, "IllegalStateException"); } catch (IOException e) { // TODO Auto-generated catch block Log.e(TAG, "IOException"); } } @SuppressWarnings("deprecation") @Override public void onStart(Intent intent, int startId) { Log.d(TAG, "onStart"); mp.start(); // Set the isPlaying preference to true editor.putBoolean("isPlaying", true); editor.commit(); Context context = getApplicationContext(); String notifTitle = context.getResources().getString(R.string.app_name); String notifMessage = context.getResources().getString(R.string.now_playing); n.icon = R.drawable.ic_launcher; n.tickerText = notifMessage; n.flags = Notification.FLAG_NO_CLEAR; n.when = System.currentTimeMillis(); Intent nIntent = new Intent(context, MainActivity.class); PendingIntent pIntent = PendingIntent.getActivity(context, 0, nIntent, 0); n.setLatestEventInfo(context, notifTitle, notifMessage, pIntent); // Change 5315 to some nother number notificationManager.notify(notifId, n); AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE); // Request audio focus for playback int result = am.requestAudioFocus(focusChangeListener, // Use the music stream. AudioManager.STREAM_MUSIC, // Request permanent focus. AudioManager.AUDIOFOCUS_GAIN); if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) { // other app had stopped playing song now , so u can do u stuff now . } } @Override public void onDestroy() { Log.d(TAG, "onDestroy"); mp.stop(); mp.release(); mp = null; editor.putBoolean("isPlaying", false); editor.commit(); notificationManager.cancel(notifId); AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE); am.abandonAudioFocus(focusChangeListener); } }

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• Sql Server - INSERT INTO SELECT to avoid duplicates

  - by Ashish Gupta

  I have following two tables:- Table1 ------------- ID Name 1 A 2 B 3 C Table2 -------- ID Name 1 Z I need to insert data from Table1 to Table2 and I can use following sytax for the same:- INSERT INTO Table2(Id, Name) SELECT Id, Name FROM Table1 However, In my case duplicate Ids might exist in Table2 (In my case Its Just "1") and I dont want to copy that again as that would throw an error. I can write something like this:- IF NOT EXISTS(SELECT 1 FROM Table2 WHERE Id=1) INSERT INTO Table2 (Id, name) SELECT Id, name FROM Table1 ELSE INSERT INTO Table2 (Id, name) SELECT Id, name FROM Table1 WHERE Table1.Id<>1 Is there a better way to do this without using IF - ELSE? I want to avoid two INSERT INTO-SELECT statements based on some condition. Any help is appreciated.

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• Reading and parsing email from Gmail using C#, C++ or Python

  - by jpnavarini

  I have to do a Windows application that from times to times access a Gmail account and checks if there is a new email. In case there is, it must read the email body and subject (a simple text email, without images or attachments). Please, do not use paid libs, and in case of any other libs used, give the download path. And I need the email body and subject only. So if the long and complex message that comes from Gmail could be parsed and only two strings containing the subject and the body, it would be perfect. Finally, I only have to get the new messages arrived since the last execution. So the read messages could be marked as "read" and only the new ones (marked as "new") are considered. The code can be written in Python or C++, but I prefer it in C#. Thank you for the help.

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