Search Results

Search found 21111 results on 845 pages for 'null pointer'.

Page 617/845 | < Previous Page | 613 614 615 616 617 618 619 620 621 622 623 624  | Next Page >

• What is @namespace field in C# class?

  - by MainMa

  Hi, I'm browsing the source code of StyleCop, and I found a curious thing: /// <summary> /// The namespace that the rule is contained within. /// </summary> private string @namespace; // [...] internal Rule(string name, string @namespace, string checkId, string context, bool warning) : this(name, @namespace, checkId, context, warning, string.Empty, null, true, false) { Param.Ignore(name, @namespace, checkId, context, warning); } What is this thing? Is it just a simple field where at-sign is used to indicate that it is a field, and not a namespace keyword? If so, may at-sign be used for any reserved word (for example @dynamic, @using, etc.)?

  Read the article

• Help with dates in Android

  - by SamRowley

  Hi guys, Looking for a bit of help with taking a dat from a DatePicker Widget and storing it in an sqlite database within the app. I have the following code: java.util.Date utilDate = null; String y = Integer.toString(date.getDayOfMonth()) + "/" + (date.getMonth()+1) + "/" + Integer.toString(date.getYear()); SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyy"); utilDate = formatter.parse(y); java.sql.Date z = new java.sql.Date(utilDate.getDate()); x = z.toString(); Log.v("The date: ", x); } Where date is the DatePicker widget. If I output the utilDate variable (i.e. the Java version of date) using logCat it seems to work fine and gives me a format like: Tue Jan 04 00:00:00 GMT 2011 which I am expecting but using the code above to get the sql version of the date, it always gives me the date 1970-01-01. I'm pretty sure the solution is very simple but I just can't see it.

  Read the article

• c#: sms appears to have been sent, but stuck in phone outbox

  - by I__

  i wrote code to send an SMS using my gsm phone which is attached to the computer through com port. the code is below. the problem is i do see that it is in the outbox of the phone and it actually appears to have been sent, but when i contact the recipient they say that i have not received the message. i test the phone, and i create and send a message using only the phone and it works perfectly, however when i do this with my code, it APPEARS to have been sent, and i am getting all the correct AT COMMAND responses from the phone, but the message is actually NOT sent. here is the code: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Threading; using System.IO.Ports; namespace WindowsFormsApplication1 { public partial class Form1 : Form { SerialPort serialPort1; int m_iTxtMsgState = 0; const int NUM_MESSAGE_STATES = 4; const string RESERVED_COM_1 = "COM1"; const string RESERVED_COM_4 = "COM4"; public Form1() { InitializeComponent(); this.Closing += new CancelEventHandler(Form1_Closing); } private void Form1_Load(object sender, EventArgs e) { serialPort1 = new SerialPort(GetUSBComPort()); if (serialPort1.IsOpen) { serialPort1.Close(); } serialPort1.Open(); //ThreadStart myThreadDelegate = new ThreadStart(ReceiveAndOutput); //Thread myThread = new Thread(myThreadDelegate); //myThread.Start(); this.serialPort1.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived); } private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e) { serialPort1.Close(); } private void SendLine(string sLine) { serialPort1.Write(sLine); sLine = sLine.Replace("\u001A", ""); consoleOut.Text += sLine; } public void DoWork() { ProcessMessageState(); } public void ProcessMessageState() { switch (m_iTxtMsgState) { case 0: m_iTxtMsgState = 1; SendLine("AT\r\n"); //NOTE: SendLine must be the last thing called in all of these! break; case 1: m_iTxtMsgState = 2; SendLine("AT+CMGF=1\r\n"); break; case 2: m_iTxtMsgState = 3; SendLine("AT+CMGW=" + Convert.ToChar(34) + "+9737387467" + Convert.ToChar(34) + "\r\n"); break; case 3: m_iTxtMsgState = 4; SendLine("A simple demo of SMS text messaging." + Convert.ToChar(26)); break; case 4: m_iTxtMsgState = 5; break; case 5: m_iTxtMsgState = NUM_MESSAGE_STATES; break; } } private string GetStoredSMSID() { return null; } /* //i dont think this part does anything private void serialPort1_DataReceived_1(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) { string response = serialPort1.ReadLine(); this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n"))); } */ void sp_DataReceived(object sender, SerialDataReceivedEventArgs e) { try { Thread.Sleep(500); char[] msg; msg = new char[613]; int iNumToRead = serialPort1.BytesToRead; serialPort1.Read(msg, 0, iNumToRead); string response = new string(msg); this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n"))); serialPort1.DiscardInBuffer(); if (m_iTxtMsgState == 4) { int pos_cmgw = response.IndexOf("+CMGW:"); string cmgw_num = response.Substring(pos_cmgw + 7, 4); SendLine("AT+CMSS=" + cmgw_num + "\r\n"); //stop listening to messages received } if (m_iTxtMsgState < NUM_MESSAGE_STATES) { ProcessMessageState(); } } catch { } } private void button1_Click(object sender, EventArgs e) { m_iTxtMsgState = 0; DoWork(); } private void button2_Click(object sender, EventArgs e) { string[] sPorts = SerialPort.GetPortNames(); foreach (string port in sPorts) { consoleOut.Text += port + "\r\n"; } } private string GetUSBComPort() { string[] sPorts = SerialPort.GetPortNames(); foreach (string port in sPorts) { if (port != RESERVED_COM_1 && port != RESERVED_COM_4) { return port; } } return null; } }

  Read the article

• CSS and JavaScript relations ?

  - by Anil Namde

  I have table cell which has class "cellActive". Which has following defination .cellActive{background:"#DDDDDD"} Now i am trying to read the background color property for the cell and it comes null/"". var bgColor = cell.style.backgroundColor; // returning "" Is that something mistake on my part of its by behavior. If CSS class is assigning CSS to element can't we read its value in JS ? Does this mean that if we are not assigning property directly to the element we cant get it if in case its inheriting it ?

  Read the article

• Making Flex HTML Control UnSelectable

  - by Joshua

  I am displaying some HTML text in an Adobe AIR Application that I do not want the user to be able to cut and paste. How do I make the HTML control disallow highlighting of the HTML without disabling the ScrollBars. mouseChildren=false works but disables the scrollbars which is unacceptable. Right now I have: <mx:HTML location="http://dexter/preview.html" width="100%" height="100%" id="PreviewArea" x="0" y="0" tabEnabled="false" tabChildren="false" focusEnabled="false" focusRect="null"/> But it's not working properly either. I have also tried overlaying a disabled transparent text control over the top of the HTML component, but the user is still able to tab to the HTML and use the keyboard controls to copy the text to the clipboard. Any hints?

  Read the article

• 42000 Syntax error in query when executing prepared statement

  - by Griff McGriff

  I have been pulling my hair out trying to swap my current script over to PDO. I have simplified the MySQL query for this example, but the error remains even with this version. $sql = 'SELECT * FROM :table WHERE lastUpdate > :appDate'; try{ $db = connect(); $stmt = $db->prepare($sql); $stmt->bindParam(':table', $table); $stmt->bindParam(':appDate', $appDate); foreach($tablesToCheck as $table){ $stmt->execute(); $resultset[] = $stmt->fetchAll(); } } catch(PDOException $e){ print 'Error!: '.$e->getMessage().'<br/>'; }//End try catch $stmt-errorInfo() returns: ( [0] => 42000 [1] => 1064 [2] => You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''GroupName' WHERE lastUpdate > NULL' at line 1 )

  Read the article

• Storing and retrieving CGPoints inside NSMutableArray

  - by Matt Dice

  I've looked through countless questions on here and elsewhere and cannot for the life of me figure out what I'm doing wrong. I'm trying to store an array of CGPoints as NSValues inside of an NSMutableArray named points like so on the iPhone: NSValue *point = [NSValue valueWithCGPoint:firstTouch]; NSLog(@"NSValue *point = %@", point); [points addObject:point]; NSLOG OUTPUT NSValue *point = NSPoint: {120, 221} Everything is going smooth converting from the CGPoint to NSValue. But when I try to retrieve the point I get nothing. NSValue *getPoint = [points objectAtIndex:0]; CGPoint thePoint = [getPoint CGPointValue]; NSLog(@"Point = %@", NSStringFromCGPoint(thePoint)); NSLOG OUTPUT Point = {0, 0} The points should be the same but I'm getting a null result. For testing purposes this is happening in the touchesBegan method. Does anyone have any idea where I'm going wrong? Thanks in advance.

  Read the article

• Convince teammates to follow standards

  - by folone

  There's always one or two guys, who think, they are great programmers, and they don't need any literature/specifications/etc. They usually write awful code, that makes you want to hurt them. They catch and suppress Throwable's, return null's, concatenate String's in large loops, do other stupid stuff. So the question is — How do I make such a person follow best practices and specifications? He does not listen (cause he's the best programmer), team lead does not give a damn ("It actually works, so why changing it?.."), and I'm actually tired of rewriting that awful code on my own. What do I do? What would you do?

  Read the article

• How to use anonymous types with Netflix OData API

  - by obautista

  If I create this collection: IEnumerable<_TITLE> _titles = null; How can I set the result set from Netflix in this expression: _titles = from t in Titles where t.Id == "ApUFq" select new {t, t.Cast} I am getting: Cannot implicitly convert type 'System.Linq.IQueryable' to 'System.Collections.Generic.IEnumerable<_Title'. An explicit conversion exists (are you missing a cast?) I understand it's because I am using an anonymous type. _TITLE is a custom complex object I create that exposes a subset of Netflix properties. If I add "_TITLE" in front the of the "new" it says that my object does not implement IENUMBERABLE. If then _TITLE implements IENUMBERABLE, it says _TITLE does not contain a definition for ADD and still getting conversion error. Basically, I want to set the _TITLE properties with the data returned from Netflix. I have defined _TITLE to contain the fields I need, plus a collection of PERSON (for Cast).

  Read the article

• Sharepoint connected web parts question

  - by philj

  I have one web part (the provider) which displays insurance claims in a gridview. When user clicks on one this value(case number) is passed via IWebPartField interface to another web part(consumer) which displays detailed info about the claim. So far so good. I can select different claims in the provider and the details show up in the consumer just fine. The moment I add a TextBox to the consumer, the consumer no longer recognizes the case number passed. I need the user to be able to enter a value in the textbox and click a button to update that claim info. I can debug and attach to process and it looks like it is getting the case in the callback function, etc, but when it is setting parameters for the stored proc in CreateChildControls, it is null. Comment out the TextBox and it works fine. Any clues as to what is going on? Brand new to Sharepoint web parts...any help appreciated! thanks, PhilJ

  Read the article

• How do I build a python string from a raw (binary) ctype buffer?

  - by fcrazy

  I'm playing with Python and ctypes and I can't figure out how to resolve this problem. I call to a C function which fills a raw binary data. My code looks like this: class Client(): def __init__(self): self.__BUFSIZE = 1024*1024 self.__buf = ctypes.create_string_buffer(self.__BUFSIZE) self.client = ctypes.cdll.LoadLibrary(r"I:\bin\client.dll") def do_something(self): len_written = self.client.fill_raw_buffer(self.__buf, self.__BUFSIZE) my_string = repr(self.__buf.value) print my_string The problem is that I'm receiving binary data (with 0x00) and it's truncated when I tried to build my_string. How can I build my_string if self._buf contains null bytes 0x00? Any idea is welcome. Thanks

  Read the article

• Converting code to perl sub, but not sure I'm doing it right

  - by Ben Dauphinee

  I'm working from a question I posted earlier (here), and trying to convert the answer to a sub so I can use it multiple times. Not sure that it's done right though. Can anyone provide a better or cleaner sub? sub search_for_key { my ($args) = @_; foreach $row(@{$args->{search_ary}}){ print "@$row[0] : @$row[1]\n"; } my $thiskey = NULL; my @result = map { $args->{search_ary}[$_][0] } # Get the 0th column... grep { @$args->{search_in} =~ /$args->{search_ary}[$_][1]/ } # ... of rows where the 0 .. $#array; # first row matches $thiskey = @result; print "\nReturning: " . $thiskey . "\n"; return $thiskey; } search_for_key({ 'search_ary' => $ref_cam_make, 'search_in' => 'Canon EOS Rebel XSi' });

  Read the article

• ORACLE: Parameter reference in WHERE doesn't work

  - by Gainder

  Hello, I have created a simple static function in oracle 10g to get the reference of an object based on his pk. STATIC FUNCTION getRef(nome IN VARCHAR2) RETURN REF folder_typ IS fl_r REF folder_typ := null; BEGIN SELECT REF(fl) INTO fl_r FROM folder_tab fl WHERE fl.nome = nome; RETURN fl_r; END getRef; This gives me an error because it could't fetch a row. If insted of WHERE fl.nome = nome; I write WHERE fl.nome = 'folder1'; -- it works. I think im not using the parameter in the right way. How can I use it?

  Read the article

• Why is Flexigird not working on IE

  - by Jrubins

  Hi I have a page with a flexigrid on it and it works on FF,Chrome,Opera except IE. it points out that the error is at line of "if(!btn.separator)" which is null or not an object. Well, every thing inside that block is an error on IE cause i think the error is on the "btn" objects.. has anyone ever encountered this error? this is from the latest version of flexigrid for(i=0;i< p.buttons.length;i++){ var btnfor = p.buttons[i]; if(!btn.separator) { //do things here } } Thanks Jrubins

  Read the article

• How does compiling circular dependencies work?

  - by Fabio F.

  I've made the example in Java but I think (not tested) that it works in other (all?) languages. You have 2 files. First, M.java: public class MType { XType x; MType() {x = null;} } Second, another file (in the same directory), XType.java: public class XType { MType m; public XType(MType m) {this.m = m;} } Ok it's bad programming, but if you run javac XType it compiles: compiles even MType because XType needs it. But ... MType needs XType ... how does that work? How does the compiler know what is happening? Probably this is a stupid question, but I would like to know how the compiler (javac or any other compilers you know) manages that situation, not how to avoid it. I'm asking because i'm writing a precompiler and I would like to manage that situation.

  Read the article

• C# How to check if a class implements generic interface ?

  - by PaN1C_Showt1Me

  How to get generic interface type for an instance ? Suppose this code: interface IMyInterface<T> { T MyProperty { get; set; } } class MyClass : IMyInterface<int> { #region IMyInterface<T> Members public int MyProperty { get; set; } #endregion } MyClass myClass = new MyClass(); /* returns the interface */ Type[] myinterfaces = myClass.GetType().GetInterfaces(); /* returns null */ Type myinterface = myClass.GetType().GetInterface(typeof(IMyInterface<int>).FullName);

  Read the article

• C++ converting hexadecimal md5 hash to decimal integer

  - by Zackery

  I'm doing Elgamal Signature Scheme and I need to use the decimal hash value from the message to compute S for signature generation. string hash = md5(message); cout << hash << endl; NTL::ZZ msgHash = strtol(hash.c_str(), NULL, 16); cout << msgHash << endl; There are no integer large enough to contain the value of 32 byte hexadecimal hash, and so I tried big integer from NTL library but it didn't work out because you cannot assign long integer to NTL::ZZ type. Is there any good solution to this? I'm doing this with visual C++ in Visual Studio 2013.

  Read the article

• Constrain a table to have only one row

  - by finnw

  What's the cleanest way to constrain a SQL table to allow it to have no more than one row? This related question discusses why such a table might exist, but not how the constraint should be implemented. So far I have only found hacks involving a unique key column that is constrained to have a specific value, e.g. ALWAYS_0 TINYINT NOT NULL PRIMARY KEY DEFAULT (0) CONSTRAINT CHECK_ALWAYS_0 CHECK (ALWAYS_0 = 0). I am guessing there is probably a cleaner way to do it. The ideal solution would be portable SQL, but a solution specific to MS SQL Server or postgres would also be useful

  Read the article

• LinkQ Exception

  - by Ravi

  Hi, I write Linq query for keep on fetching data from database. First loop table don't have record , so throwing exception. After first loop i have record in the database, my query is working properly. Below i specified my query give some suggestion first loop(no records in table) i have to modify query or query have to change. Ex: forloop(History history in historyList) { History history1 = (from p in context.History where p.TransferCode == history.TransferCode select p).First<History>() as History; if(history1 == null) { SaveToDataBase(history); } else { UpdateToDataBase(history1); } } Thinks

  Read the article

• how to go the middle of the singularly linked list in one iteration?

  - by u3050

  Recently I have been asked one question that in a singularly linked list how do we go to the middle of the list in one iteration. A --> B --> C --> D (even nodes) for this it should return address which points to B A --> B --> C (odd nodes) for this also it should return address which points to B There is one solution of taking two pointers one moves one time and other moves two times but it does not seem working here LinkedList p1,p2; while(p2.next != null) { p1 = p1.next; p2 = p2.next.next; } System.out.print("middle of the node" + p1.data); //This does not give accurate result in odd and even Please help if anyone has did this before.

  Read the article

• Convert search from SQL Server to MySQL

  - by HAJJAJ

  hi, everyone. i need to convert this one from SQL Server into MySQL IF IsNull(@SearchText, '') <> '' BEGIN SET @SearchText = '%' + @SearchText + '%' SELECT NewsID,DeptID,DeptName,Title,Details ,NewsDate,img FROM @tbSearchtextTb WHERE IsNull(Title,'')+IsNull(Details,'') LIKE @SearchText END this code will search fro my search word in this columns: Title, Details. i tried to convert this line but i had lots of errors: these are my unsuccessful attempts IF ISNULL(SearchText,'') <> '' THEN SELECT CatID,CatTitle,CatDescription,CatTitleAr,CatDescriptionAr,PictureID,Published,DisplayOrder,CreatedOn FROM tmp WHERE CatTitle + CatDescription + CatTitleAr + CatDescriptionAr LIKE $SearchText; and this one IF $SearchText IS NOT NULL THEN SELECT CatID,CatTitle,CatDescription,CatTitleAr,CatDescriptionAr,PictureID,Published,DisplayOrder,CreatedOn FROM tmp WHERE ISNULL(CatTitle,'') +ISNULL(CatDescription ,'') +ISNULL(CatTitleAr ,'') +ISNULL(CatDescriptionAr,'') LIKE $SearchText; and many many other ways but i could not find any. so if you know please let me know, thanks and best regards.

  Read the article

• Strange errors in Visual C++ :: 'malloc' : function does not take 1 arguments

  - by pecker

  Error 38 error C2660: 'malloc' : function does not take 1 arguments C:\VolumeRenderer\render.cpp 296 1 VolumeRenderer Error 39 error C2660: 'malloc' : function does not take 1 arguments C:\VolumeRenderer\render.cpp 412 1 VolumeRenderer Error 40 error C2660: 'malloc' : function does not take 1 arguments C:\VolumeRenderer\render.cpp 414 1 VolumeRenderer Error 41 error C2660: 'read_den' : function does not take 4 arguments C:\VolumeRenderer\render.cpp 506 1 VolumeRenderer My all malloc sections are like this: /* allocate space for the raw data */ density_size = BRAIN_XLEN * BRAIN_YLEN * BRAIN_ZLEN; density = (unsigned char*)malloc(density_size); if (density == NULL) { fprintf(stderr, "out of memory\n"); exit(1); } regarding read_den (last error) unsigned char *read_den(char *filename,int *xptr,int *yptr,int *zptr)// function prototype src_volume = read_den(src_file, &src_xlen, &src_ylen, &src_zlen);// fucntion call Is it my code or the errors that are absurd. How to rectify them?

  Read the article

• pl/sql creating a function with parameterized cursor with return date

  - by user3134365

  create or replace FUNCTION get_next_sch_date(cert_id VARCHAR2,test_id VARCHAR2) RETURN DATE AS CURSOR next_sch_date(pb_id number,test_no varchar2) IS SELECT Sch_Controls,PBY_FRQ,START_AFTER__CAL_DAYS,PBY_DUE_BY,PBY_NEXT_SCH_TEST_DATE FROM ms_cmp_plan_pby WHERE pby_id=pb_id AND test_plan_id=test_no; l_new_date DATE; l_new_sch number; sch_ctrl VARCHAR2(100); pb_frq VARCHAR2(100); start_days NUMBER; due_days NUMBER; test_date DATE; pb_id NUMBER; test_no NUMBER; BEGIN OPEN next_sch_date(pb_id,test_no); loop FETCH next_sch_date INTO sch_ctrl,pb_frq,start_days,due_days,test_date; SELECT DISTINCT pby_rec_id INTO l_new_sch FROM ms_cmp_assignment_log WHERE ASSIGNMENT_ID=cert_id AND PLAN_ID=test_id; exit; end loop; CLOSE next_sch_date; RETURN l_new_date; Exception WHEN others THEN RETURN NULL; end; this is my function but i dont getting excepted result

  Read the article

• Problem with commit in sharpsvn

  - by zhangxiaoning

  Hi,I'm a programmer in china. I want to commit the changes of a working copy in my computer to the repository. The repository is in an URL and i´m doing this now: using (SvnClient client = new SvnClient()){ string path = @"C:\testdelete\test.java"; client.Delete(path); client.Authentication.Clear(); // Clear predefined handlers client.Authentication.UserNamePasswordHandlers += delegate(object obj, SharpSvn.Security.SvnUserNamePasswordEventArgs args) { args.UserName = "username"; args.Password = "password"; }; var uri = client.GetUriFromWorkingCopy(path); if (uri != null) { SvnCommitArgs args = new SvnCommitArgs(); args.ThrowOnError = true; args.ThrowOnCancel = true; client.Commit(path, args);//here throw a SvnOperationCanceledException } } But it doesn´t work,Why?Thanks!

  Read the article

• QMap inheritance with QMapIterator

  - by gregseth

  Hi, I made a personnal class which inherits QMap: class CfgMgr : public QMap<QString, CfgSet*> {...} I'm trying to iterate over all its elements like that: CfgMgr* m_pDefaults = new CfgMgr; // .../... QMapIterator<QString, CfgSet*> ics(*m_pDefaults); while (ics.hasNext()) { // doing my stuff } And I get the compile error: Can't convert parameter 1 from 'CfgMgr' to 'const QMap< Key,T &' with [ Key=QString, T=CfgSet * ] I tried with a dynamic_cast: QMapIterator<QString, CfgSet*> ics( *dynamic_cast< QMap<QString,CfgSet*>* >(m_pDefaults) ); it compiles, but always returns NULL. What's wrong? How can I solve this?

  Read the article

< Previous Page | 613 614 615 616 617 618 619 620 621 622 623 624  | Next Page >