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  • Linux distro name parsing

    - by Ockonal
    Hello, I chose this way to get linux distro name: ls /etc/*release And now I have to parse it for name: /etc/<name>-release def checkDistro(): p = Popen('ls /etc/*release' , shell = True, stdout = PIPE) distroRelease = p.stdout.read() distroName = re.search( ur"\/etc\/(.*)\-release", distroRelease).group() print distroName But this prints the same string that is in distroRelease.

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  • Grails Domain.get() returns null for mongo's ObjectId

    - by Shashank Agrawal
    I'm using grails 2.3.5 with mongodb 3.0.1 and no hibernate installed. I've a domain class which uses mongo's ObjectId. import org.bson.types.ObjectId class Category { ObjectId id String name } And has a record in mongo database: { "_id": ObjectId("53f6c34c33a429240e2ab471"), "name": "art", "version": NumberLong("41") } When I do, Category.get(new ObjectId("53f6c34c33a429240e2ab471")) somewhere in grails app, it returns null but when I do Category.get("53f6c34c33a429240e2ab471") it then actually returns the result. Why, get() method does not process ObjectId type?

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  • Emacs, C++ code completion for vectors

    - by Caglar Toklu
    Hi, I am new to Emacs, and I have the following code as a sample. I have installed GNU Emacs 23.1.1 (i386-mingw-nt6.1.7600), installed cedet-1.0pre7.tar.gz. , installed ELPA, and company. You can find my simple Emacs configuration at the bottom. The problem is, when I type q[0] in main() and press . (dot), I see the 37 members of the vector, not Person although first_name and last_name are expected. The completion works as expected in the function greet() but it has nothing to do with vector. My question is, how can I accomplish code completion for vector elements too? #include <iostream> #include <vector> using namespace std; class Person { public: string first_name; string last_name; }; void greet(Person a_person) { // a_person.first_name is completed as expected! cout << a_person.first_name << "|"; cout << a_person.last_name << endl; }; int main() { vector<Person> q(2); Person guy1; guy1.first_name = "foo"; guy1.last_name = "bar"; Person guy2; guy2.first_name = "stack"; guy2.last_name = "overflow"; q[0] = guy1; q[1] = guy2; greet(guy1); greet(guy2); // cout q[0]. I want to see first_name or last_name here! } My Emacs configuration: ;;; This was installed by package-install.el. ;;; This provides support for the package system and ;;; interfacing with ELPA, the package archive. ;;; Move this code earlier if you want to reference ;;; packages in your .emacs. (when (load (expand-file-name "~/.emacs.d/elpa/package.el")) (package-initialize)) (load-file "~/.emacs.d/cedet/common/cedet.el") (semantic-load-enable-excessive-code-helpers) (require 'semantic-ia) (global-srecode-minor-mode 1) (semantic-add-system-include "/gcc/include/c++/4.4.2" 'c++-mode) (semantic-add-system-include "/gcc/i386-pc-mingw32/include" 'c++-mode) (semantic-add-system-include "/gcc/include" 'c++-mode) (defun my-semantic-hook () (imenu-add-to-menubar "TAGS")) (add-hook 'semantic-init-hooks 'my-semantic-hook)

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  • PHP regular expression for positive number with 0 or 2 decimal places

    - by Peter
    Hi I am trying to use the following regular expression to check whether a string is a positive number with either zero decimal places, or 2: ^\d+(\.(\d{2}))?$ When I try to match this using preg_match, I get the error: Warning: preg_match(): No ending delimiter '^' found in /Library/WebServer/Documents/lib/forms.php on line 862 What am I doing wrong?

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  • Generic JSON parser in .NET / WPF?

    - by niklassaers
    I've read lots of tutorials on how to deserialize a JSON object to an object of a particular using DataContractJsonSerializer. However, I'd like to deserialize my object to a Dictionary consisting of either Strings, Arrays or Dictionaries, such as System.Json does with SilverLight when I say JsonObject.Parse(myJSONstring). Is there an equivalent to System.Json that I can use in my WPF project? (just a short background: I'm fetching JSON objects that have way to much info, and I just want to use a little bit to fill out a String array) Cheers Nik

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  • MFC: Reading entire file to buffer...

    - by deostroll
    I've meddled with some code but I am unable to read the entire file properly...a lot of junk gets appended to the output. How do I fix this? // wmfParser.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include "wmfParser.h" #include <cstring> #ifdef _DEBUG #define new DEBUG_NEW #endif // The one and only application object CWinApp theApp; using namespace std; int _tmain(int argc, TCHAR* argv[], TCHAR* envp[]) { int nRetCode = 0; // initialize MFC and print and error on failure if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)) { // TODO: change error code to suit your needs _tprintf(_T("Fatal Error: MFC initialization failed\n")); nRetCode = 1; } else { // TODO: code your application's behavior here. CFile file; CFileException exp; if( !file.Open( _T("c:\\sample.txt"), CFile::modeRead, &exp ) ){ exp.ReportError(); cout<<'\n'; cout<<"Aborting..."; system("pause"); return 0; } ULONGLONG dwLength = file.GetLength(); cout<<"Length of file to read = " << dwLength << '\n'; /* BYTE* buffer; buffer=(BYTE*)calloc(dwLength, sizeof(BYTE)); file.Read(buffer, 25); char* str = (char*)buffer; cout<<"length of string : " << strlen(str) << '\n'; cout<<"string from file: " << str << '\n'; */ char str[100]; file.Read(str, sizeof(str)); cout << "Data : " << str <<'\n'; file.Close(); cout<<"File was closed\n"; //AfxMessageBox(_T("This is a test message box")); system("pause"); } return nRetCode; }

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  • Why does Python array moduel handle strings and lists differently?

    - by Casey
    I'm having trouble understanding the result of the following statements: >>> from array import array >>> array('L',[0xff,0xff,0xff,0xff]) array('L', [255L, 255L, 255L, 255L]) >>> from array import array >>> array('L','\xff\xff\xff\xff') Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: string length not a multiple of item size

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  • SimpleDateFormat

    - by manu
    Hi, The following code is giving me the parsed date as "Wed Jan 13 00:00:00 EST 2010" instead of "Wed Jun 13 00:00:00 EST 2010". Any ideas much appreciated. SimpleDateFormat sf = new SimpleDateFormat("yyyy-mm-dd'T'HH:mm:ss"); String str = "2010-06-13T00:00:00"; Date date = sf.parse(str); System.out.println(" Date " + date.toString());

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  • Java: file write on finalize method

    - by sowrov
    In my understanding a singleton object will destroy only when the application is about to terminate. So in C++ I write a Singleton class to log my application and in that Singleton logger's destructor I log the time when my application was terminated. Things worked perfectly in C++. Now I want to have that same logger in Java, as in java there is no destructor so I implemented the finalize method for that singleton logger. But it seem that finalize method actually never get called. So, I add that System.runFinalizersOnExit(true); line, somewhere in my code (though I know it is deprecated) and that finalize method get called every time before termination of the app. But still there is a problem! If I try to write anything on file in that finalize method, It does not work, though System.out work without any problem! :( Can you guys help me on this problem? Here is a sample code of what I am try to do: Singleton Logger Class: public class MyLogger { FileWriter writer; private MyLogger() { try { this.writer = new FileWriter("log.txt"); } catch (IOException ex) { } } public static MyLogger getInstance() { return MyLoggerHolder.INSTANCE; } private static class MyLoggerHolder { private static final MyLogger INSTANCE = new MyLogger(); } @Override protected void finalize () { try { super.finalize(); System.out.println("Here"); //worked correctly. this.writer.write(new Date().toString()+System.getProperty("line.separator")); this.writer.write("End"); this.writer.flush(); //does not work! this.writer.close(); } catch (Throwable ex) { } } public synchronized void log(String str) { try { this.writer.write(new Date().toString()+System.getProperty("line.separator")); this.writer.write(str+"\n"); this.writer.flush(); } catch (IOException ex) { } } } Main: public class Main { public static void main(String[] args) { System.runFinalizersOnExit(true); MyLogger logger = MyLogger.getInstance(); logger.log("test"); } }

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  • How do I reflect over the members of dynamic object?

    - by Flatliner DOA
    I need to get a dictionary of properties and their values from an object declared with the dynamic keyword in .NET 4? It seems using reflection for this will not work. Example: dynamic s = new ExpandoObject(); s.Path = "/Home"; s.Name = "Home"; // How do I enumerate the Path and Name properties and get their values? IDictionary<string, object> propertyValues = ???

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  • Regex Question ...

    - by kate
    Hi, Could someone help me with the following RegEx query: based on the following rules: 1) 1 letter followed by 4 letters or numbers, then 2) 5 letters or numbers, then 3) 3 letters or numbers followed by a number and one of the following signs: ! & @ ? You will have to allow customers to input the fidelity card code as a 15-character string, or as 3 groups of 5 chars, separated by one space.

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  • RadioButton checkedchanged event firing multiple times

    - by kash3
    Hi, I am trying to add multiple radiobutton columns to my gridview dynamically in the code and i want to implement some logic which involves database fetch in the checkedchanged event of radiobuttons but some how the checked changed event is being fired multiple times for each row. Following is the code: aspx: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" BackColor="White" BorderColor="#CC9966" BorderStyle="None" EnableViewState="true" BorderWidth="1px" CellPadding="4" Font-Names="Verdana"> <FooterStyle BackColor="#FFFFCC" ForeColor="#330099" /> <Columns> <asp:TemplateField HeaderText="Select One"> <ItemTemplate> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="Select Two"> <ItemTemplate> </ItemTemplate> </asp:TemplateField> <asp:TemplateField> <ItemTemplate> <asp:Label ID="lblval" runat="server" Text="!" ForeColor="Red" Visible="false"/> </ItemTemplate> </asp:TemplateField> </Columns> **code behind** void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.DataItem != null) { DataRowView dvRowview = (DataRowView)e.Row.DataItem; int currentRow = GridView1.Rows.Count; RadioButton rdoSelect1 = new RadioButton(); rdoSelect1.GroupName = "Select" + currentRow; rdoSelect1.ID = string.Concat("rdoSelect1", currentRow); rdoSelect1.AutoPostBack = true; rdoSelect1.CheckedChanged += new EventHandler(rdoSelect_CheckedChanged); e.Row.Cells[0].Controls.Add(rdoSelect1); RadioButton rdoSelect2 = new RadioButton(); rdoSelect2.GroupName = "Select" + currentRow; rdoSelect2.ID = string.Concat("rdoSelect2", currentRow); rdoSelect2.AutoPostBack = true; rdoSelect2.CheckedChanged += new EventHandler(rdoSelect_CheckedChanged); e.Row.Cells[1].Controls.Add(rdoSelect2); if (!IsPostBack) { e.Row.Cells[e.Row.Cells.Count - 1].Controls[1].Visible = false; if (e.Row.Cells[0] != null && Convert.ToBoolean(dvRowview["Select1"]) == true) rdoSelect1.Checked = true; else rdoSelect1.Checked = false; if (e.Row.Cells[0] != null && Convert.ToBoolean(dvRowview["Select2"]) == true) rdoSelect2.Checked = true; else rdoSelect2.Checked = false; } } } void rdoSelect_CheckedChanged(object sender, EventArgs e) { RadioButton rdoSelectedOption = (RadioButton)sender; GridViewRow selRow = rdoSelectedOption.NamingContainer as GridViewRow; if (rdoSelectedOption.Checked) selRow.Cells[selRow.Cells.Count - 1].Controls[1].Visible = true; else selRow.Cells[selRow.Cells.Count - 1].Controls[1].Visible = false; } i want the checkedchanged event to fire only once for a group name and row.

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  • What's the difference between these two calls to a function taking a collection of structural types?

    - by James Moore
    Why does the call to fn(Iterator("foo") compile, but the call to fn(fooIterator) fail with an error "type mismatch; found : Iterator[java.lang.String] required: scala.Iterator[com.banshee.Qx.HasLength]" object Qx { type HasLength = {def length: Int} def fn(xs: Iterator[HasLength]) = 3 var tn = fn(Iterator("foo")) var fooIterator = Iterator("foo") var tnFails = fn(fooIterator) //doesn't compile } Aren't they the same thing?

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  • Different ways of accessing configuration parameters from a JAX-WS service

    - by ecerulm
    As far as I know I can access the web.xml <context-param>s by making my class implement ServletContextListener and use the ServletContext.getInitParam(String) to read them, but it´s cumbersome as only one instance of the class will receive the contextInitialized(ServletContextEvent sce) call, so I need to make the ServletContext an static member of the class. What other ways exist of setting conf params at deployment time and what are the recommended ones?

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  • How to do a proper search with nhibernate

    - by Denis Rosca
    Hello everyone, i'm working on a small project that is supposed to allow basic searches of the database. Currently i'm using nhibernate for the database interaction. In the database i have 2 tables: Person and Address. The Person table has a many-to-one relationship with Address. The code i've come up with for doing searches is: public IList<T> GetByParameterList(List<QueryParameter> parameterList) { if (parameterList == null) { return GetAll(); } using (ISession session = NHibernateHelper.OpenSession()) { ICriteria criteria = session.CreateCriteria<T>(); foreach (QueryParameter param in parameterList) { switch (param.Constraint) { case ConstraintType.Less: criteria.Add(Expression.Lt(param.ParameterName, param.ParameterValue)); break; case ConstraintType.More: criteria.Add(Expression.Gt(param.ParameterName, param.ParameterValue)); break; case ConstraintType.LessOrEqual: criteria.Add(Expression.Le(param.ParameterName, param.ParameterValue)); break; case ConstraintType.EqualOrMore: criteria.Add(Expression.Ge(param.ParameterName, param.ParameterValue)); break; case ConstraintType.Equals: criteria.Add(Expression.Eq(param.ParameterName, param.ParameterValue)); break; case ConstraintType.Like: criteria.Add(Expression.Like(param.ParameterName, param.ParameterValue)); break; } } try { IList<T> result = criteria.List<T>(); return result; } catch { //TODO: Implement some exception handling throw; } } } The query parameter is a helper object that i use to create criterias and send it to the dal, it looks like this: public class QueryParameter { public QueryParameter(string ParameterName, Object ParameterValue, ConstraintType constraintType) { this.ParameterName = ParameterName; this.ParameterValue = ParameterValue; this.Constraint = constraintType; } public string ParameterName { get; set; } public Object ParameterValue { get; set; } public ConstraintType Constraint { get; set; } } Now this works well if i'm doing a search like FirstName = "John" , but not when i try to give a parameter like Street = "Some Street". It seems that nhibernate is looking for a street column in the Person table but not in the Address table. Any idea on how should i change my code for so i could do a proper search? Tips? Maybe some alternatives? Disclaimer: i'm kind of a noob so please be gentle ;) Thanks, Denis.

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  • Java accessing variables using extends

    - by delo
    So here I have two classes: Customer Order Class and Confirmation Class. I want to access the data stored in LastNameTextField (Customer Order Class) and set it as the text for UserLastNameLabel (Confirmation Class) after clicking a "Submit" button. For some reason however, the output displays nothing. Snippet of my code: package customer_order; public class customer_order extends Frame{ private static final long serialVersionUID = 1L; private JPanel jPanel = null; private JLabel LastNameLabel = null; protected JTextField LastNameTextField = null; private JButton SubmitButton = null; public String s; public customer_order() { super(); initialize(); } private void initialize() { this.setSize(729, 400); this.setTitle("Customer Order"); this.add(getJPanel(), BorderLayout.CENTER); } /** * This method initializes LastNameTextField * * @return javax.swing.JTextField */ public JTextField getLastNameTextField() { if (LastNameTextField == null) { LastNameTextField = new JTextField(); LastNameTextField.setBounds(new Rectangle(120, 100, 164, 28)); LastNameTextField.setName("LastNameTextField"); } return LastNameTextField; } /** * This method initializes SubmitButton * * @return javax.swing.JButton */ private JButton getSubmitButton() { if (SubmitButton == null) { SubmitButton = new JButton(); SubmitButton.setBounds(new Rectangle(501, 225, 96, 29)); SubmitButton.setName("SubmitButton"); SubmitButton.setText("Submit"); SubmitButton.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { System.out.println("actionPerformed()"); // TODO Auto-generated Event stub actionPerformed() //THE STRING I WANT s = LastNameTextField.getText(); java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new confirmation().setVisible(true); } }); } }); } return SubmitButton; } package customer_order; public class confirmation extends customer_order{ private static final long serialVersionUID = 1L; private JPanel jPanel = null; // @jve:decl-index=0:visual-constraint="58,9" private JLabel LastNameLabel = null; private JLabel UserLastNameLabel = null; // @jve:decl-index=0: /** * This method initializes frame * * @return java.awt.Frame */ public confirmation() { super(); initialize(); } private void initialize() { this.setSize(729, 400); this.setTitle("Confirmation"); this.add(getJPanel(), BorderLayout.CENTER); } /** * This method initializes jPanel * * @return javax.swing.JPanel */ private JPanel getJPanel() { if (jPanel == null) { UserLastNameLabel = new JLabel(); UserLastNameLabel.setBounds(new Rectangle(121, 60, 167, 26)); //THE PROBLEM? UserLastNameLabel.setText(s); } return jPanel; }

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  • How to compute palindrome from a stream of characters in sub-linear space/time?

    - by wrick
    I don't even know if a solution exists or not. Here is the problem in detail. You are a program that is accepting an infinitely long stream of characters (for simplicity you can assume characters are either 1 or 0). At any point, I can stop the stream (let's say after N characters were passed through) and ask you if the string received so far is a palindrome or not. How can you do this using less sub-linear space and/or time.

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  • How to call a script that expects $_POST from inside a function

    - by donpal
    My script.php accepts $_POST input and echos a string. $theinput = $_POST['theinput']; $output = //some processing; echo $output; I would like to use this script inside a function where the same input is now a $_POST function processinput($someinput){ //I need to call the above script and give it //the same input `$someinput` which is not a `$_POST` anymore } Any ideas how to do that?

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