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  • Java multi Generic collection parameters complie error

    - by Geln Yang
    Hi, So strange!Please have a look the code first: public class A { } public class B extends A { } public class C extends A { } public class TestMain { public <T extends A> void test(T a, T b) { } public <T extends A> void test(List<T> a, List<T> b) { } public static void main(String[] args) { new TestMain().test(new B(), new C()); new TestMain().test(new ArrayList<B>(), new ArrayList<C>()); } } The statement "new TestMain().test(new ArrayList(), new ArrayList())" get a "Bound mismatch" compile error, while "new TestMain().test(new B(), new C())" is compiled ok. Bound mismatch: The generic method test(T, T) of type TestMain is not applicable for the arguments (ArrayList, ArrayList). The inferred type ArrayList is not a valid substitute for the bounded parameter It seems the type of the second generic List parameter is limited by the Type of the first.Is it a feature or a bug of the compile program? ps, jdk:1.6,IDE:Eclipse 3.5.1

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  • C# implicit conversions

    - by Chris Boden
    Hello, I'm currently working on an application where I need to load data from an SQL database and then assign the retrieved values into the properties of an object. I'm doing this by using reflection since the property names and column names are the same. However, many of the properties are using a custom struct type that is basically a currency wrapper for the decimal type. I have defined an implicit conversion in my struct: public static implicit operator Currency(decimal d) { return new Currency(d); } This works fine when I use it in code. However, when I have this: foreach (PropertyInfo p in props) { p.SetValue(this, table.Rows[0][p.Name], null); } It throws an ArgumentException stating that it cannot convert from System.Decimal to Currency. I'm confused since it works fine in any other circumstance.

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  • Using DrawString to draw text with no border

    - by griegs
    I have this code; public static Image AddText(this Image image, ImageText text) { Graphics surface = Graphics.FromImage(image); Font font = new Font("Tahoma", 10); System.Drawing.SolidBrush brush = new SolidBrush(Color.Red); surface.DrawString(text.Text, font, brush, new PointF { X = 30, Y = 10 }); surface.Dispose(); return image; } However, when the text is drawn onto my image it's red with a black border or shadowing. How can I write text to an image without any border or shadow?

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  • Suggestion to reverse string in c#

    - by HasanGursoy
    Is this the right method to reverse a string? I'm planning to use it to reverse a string like: Products » X1 » X3 to X3 « X1 « Products I want it to be a global function which can be used elsewhere. public static string ReverseString(string input, string separator, string outSeparator) { string result = String.Empty; string[] temp = Regex.Split(input, separator, RegexOptions.IgnoreCase); Array.Reverse(temp); for (int i = 0; i < temp.Length; i++) { result += temp[i] + " " + outSeparator + " "; } return result; }

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  • How to access a String Array location in android?

    - by Vamsi Challa
    Android 2.3.3 This is my code... String[] expression = {""}; //globally declared as empty somewhere in the code below, I am trying to assign a string to it. expression[0] = "Hi"; I keep getting the following error... 12-08 22:12:19.063: E/AndroidRuntime(405): java.lang.ArrayIndexOutOfBoundsException Can someone help me with this.. Can we access the index 0, directly as i am doing? Actual Code ::: static int x = 0; // global declaration String[] assembledArray = {""}; // global declaration assembleArray(strSubString, expression.charAt(i)); //Passing string to the method //Method Implementation private void assembleArray(String strSubString, char charAt) { // TODO Auto-generated method stub assembledArray[x] = strSubString; assembledArray[x+1] = String.valueOf(charAt); x = x+2; }

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  • How do I implement a fibonacci sequence in java using try/catch logic?

    - by Lars Flyger
    I know how to do it using simple recursion, but in order to complete this particular assignment I need to be able to accumulate on the stack and throw an exception that holds the answer in it. So far I have: public static int fibo(int index) { int sum = 0; try { fibo_aux(index, 1, 1); } catch (IntegerException me) { sum = me.getIntValue(); } return sum; } fibo_aux is supposed to throw an IntegerException (which holds the value of the answer that is retireved via getIntValue) and accumulates the answer on the stack, but so far I can't figure it out. Can anyone help?

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  • The type or namespace name 'DefaultTemplateLexer' could not be found

    - by user310291
    The official tutorial from http://www.antlr.org/wiki/display/ST/Five+minute+Introduction doesn't work because of DefaultTemplateLexer, how to fix ? using System; using Antlr.StringTemplate; class Script { static public void Main(string[] args) { StringTemplateGroup group = new StringTemplateGroup("myGroup", @"C:\Tutorials\stringtemplate", typeof(DefaultTemplateLexer)); StringTemplate helloAgain = group.GetInstanceOf("homepage"); helloAgain.SetAttribute("title", "Welcome To StringTemplate"); helloAgain.SetAttribute("name", "World"); helloAgain.SetAttribute("friends", "Terence"); helloAgain.SetAttribute("friends", "Kunle"); helloAgain.SetAttribute("friends", "Micheal"); helloAgain.SetAttribute("friends", "Marq"); Console.Out.WriteLine(helloAgain.ToString()); } }

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  • Java Convert ColorSpace of BufferedImage to CS_GRAY without using ConvertColorOp

    - by gmatt
    I know its possible to convert an image to CS_GRAY using public static BufferedImage getGrayBufferedImage(BufferedImage image) { BufferedImageOp op = new ColorConvertOp(ColorSpace .getInstance(ColorSpace.CS_GRAY), null); BufferedImage sourceImgGray = op.filter(image, null); return sourceImgGray; } however, this is a chokepoint of my entire program. I need to do this often, on 800x600 pixel images and takes about 200-300ms for this operation to complete, on average. I know I can do this alot faster by using one for loop to loop through the image data and set it right away. The code above on the other hand constructs a brand new 800x600 BufferedImage that is gray scale. I would rather just transform the image I pass in. Does any one know how to do this with a for loop and given that the image is RGB color space?

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  • File private variables in PHP

    - by kayahr
    Is it possible to define private variables in a PHP script so these variables are only visible in this single PHP script and nowhere else? I want to have an include file which does something without polluting the global namespace. It must work with PHP 5.2 so PHP namespaces are not an option. And no OOP is used here so I'm not searching for private class members. I'm searching for "somewhat-global" variables which are global in the current script but nowhere else. In C I could do it with the static keyword but is there something similar in PHP? Here is a short example of a "common.php" script: $dir = dirname(__FILE__); set_include_path($dir . PATH_SEPARATOR . get_include_path()); // Do more stuff with the $dir variable When I include this file in some script then the $dir variable is visible in all other scripts as well and I don't want that. So how can I prevent this?

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  • How to draw a sliced image in Cairo?

    - by Maz
    I am currently using the following code to draw sliced images: static void DrawImage(cairo_t *ctx,int x,int y,int w,int h,cairo_surface_t *img){ cairo_set_source_surface(ctx, img, 0, 0); cairo_rectangle(ctx, x, y, w, h); cairo_clip(ctx); cairo_paint(ctx); cairo_reset_clip(ctx); } void DrawThreeSliceImage(cairo_t* ctx,Point p,int width,cairo_surface_t *a,cairo_surface_t *b,cairo_surface_t *c){ DrawImage(ctx, p.x, p.y, cairo_image_surface_get_width(a), cairo_image_surface_get_height(a),a); DrawImage(ctx, p.x+cairo_image_surface_get_width(a), p.y, width-(cairo_image_surface_get_width(a)+cairo_image_surface_get_width(c)), cairo_image_surface_get_height(b),b); DrawImage(ctx, p.x+(width-cairo_image_surface_get_width(c)), p.y, cairo_image_surface_get_width(c), cairo_image_surface_get_height(c),c); } However, there is no output. I have tried rendering to both xlib and png surfaces, neither seems to work, that is nothing is drawn. Also, I have written the input surfaces to png files, and they appear to be working. Thanks.

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  • Com port don't work in java

    - by ?????? ?????
    Does't work with java... don't sent message to my microchip. please help public static void main(String[] args) { SerialPort serialPort = new SerialPort("COM1"); try { serialPort.openPort(); serialPort.setParams(9600, 8, 1, 0); serialPort.setParams(SerialPort.BAUDRATE_9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); serialPort.writeBytes("Test"); readBytes(), ???? ?? ??????? ?????? byte[] buffer = serialPort.readBytes(10); //????????? ???? serialPort.closePort(); } catch (SerialPortException ex) { System.out.println(ex); } } } byte[] Write "[@B********" Star is a random number.

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  • Syntax to specify Namespace when using helper.RouteUrl

    - by B Z
    I am using Asp.Net MVC 2 - RC w/ Areas. I am receiving an ambigious controller name exception due to having same controller name in two different areas. I've read Phil Haack's post I can't figure out the syntax when trying to use UrlHelper (I have an extensions class). e.g. public static string MyAreaHome(this UrlHelper helper) { return helper.RouteUrl("ARoute", new { controller = "Home", action = "Index" }); } I've tried the obvious of adding namespace="mynamespace" but that didn't work, it just added the namespace to the url. Thanks for any help.

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  • Changing a limited user account in XP fails

    - by javamonkey79
    I have the following: using System; using System.DirectoryServices.AccountManagement; public class ChangePassword { public static void Main() { PrincipalContext context = new PrincipalContext(ContextType.Machine); UserPrincipal user = UserPrincipal.FindByIdentity(context, "someLimitedAccount"); user.ChangePassword( "xxx", "zzz" ); } } This works just fine with administrator accounts, but seems to crash like so when I try to change limited accounts in XP: Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object. at ChangePassword.Main() Is what I am trying to do possible? If so, how? EDIT #1: I added the following: Console.WriteLine( "user: " + user ); Below this line: UserPrincipal user = UserPrincipal.FindByIdentity(context, "someLimitedAccount"); And I get this: user: It doesn't look like user is null when I print it, but then again I'm not really a .Net guy - I seem to remember this being expected behavior.

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  • ASP.NET how to get Cache in KB used for this application ?

    - by eugeneK
    I need to know what is Cache size. I've read on this site solution for close problem but it doesn't solves mine. As i know i can get values from PerMon, here is function public static string getCacheSize() { PerformanceCounter pc = new PerformanceCounter("ASP.NET Applications", "Cache % Machine Memory Limit Used","__TOTAL__", true); return string.Format("{0:0.00}%", pc.NextValue()); } 1.it gives me percents when i need KB and there is no item closest to this one in PerfMon 2.it shows 70.5% used while all memory usage is about 50% any help ?

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  • Import boto from local library

    - by ensnare
    I'm trying to use boto as a downloaded library, rather than installing it globally on my machine. I'm able to import boto, but when I run boto.connect_dynamodb() I get an error: ImportError: No module named dynamodb.layer2 Here's my file structure: project/ project/ __init__.py libraries/ __init__.py flask/ boto/ views/ .... modules/ __init__.py db.py .... templates/ .... static/ .... runserver.py And the contents of the relevant files as follows: project/project/modules/db.py from project.libraries import boto conn = boto.connect_dynamodb( aws_access_key_id='<YOUR_AWS_KEY_ID>', aws_secret_access_key='<YOUR_AWS_SECRET_KEY>') What am I doing wrong? Thanks in advance.

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  • Stuck with the first record while parsing an XML in Java

    - by Ritwik G
    I am parsing the following XML : <table ID="customer"> <T><C_CUSTKEY>1</C_CUSTKEY><C_NAME>Customer#000000001</C_NAME><C_ADDRESS>IVhzIApeRb ot,c,E</C_ADDRESS><C_NATIONKEY>15</C_NATIONKEY><C_PHONE>25-989-741-2988</C_PHONE><C_ACCTBAL>711.56</C_ACCTBAL><C_MKTSEGMENT>BUILDING</C_MKTSEGMENT><C_COMMENT>regular, regular platelets are fluffily according to the even attainments. blithely iron</C_COMMENT></T> <T><C_CUSTKEY>2</C_CUSTKEY><C_NAME>Customer#000000002</C_NAME><C_ADDRESS>XSTf4,NCwDVaWNe6tEgvwfmRchLXak</C_ADDRESS><C_NATIONKEY>13</C_NATIONKEY><C_PHONE>23-768-687-3665</C_PHONE><C_ACCTBAL>121.65</C_ACCTBAL><C_MKTSEGMENT>AUTOMOBILE</C_MKTSEGMENT><C_COMMENT>furiously special deposits solve slyly. furiously even foxes wake alongside of the furiously ironic ideas. pending</C_COMMENT></T> <T><C_CUSTKEY>3</C_CUSTKEY><C_NAME>Customer#000000003</C_NAME><C_ADDRESS>MG9kdTD2WBHm</C_ADDRESS><C_NATIONKEY>1</C_NATIONKEY><C_PHONE>11-719-748-3364</C_PHONE><C_ACCTBAL>7498.12</C_ACCTBAL><C_MKTSEGMENT>AUTOMOBILE</C_MKTSEGMENT><C_COMMENT>special packages wake. slyly reg</C_COMMENT></T> <T><C_CUSTKEY>4</C_CUSTKEY><C_NAME>Customer#000000004</C_NAME><C_ADDRESS>XxVSJsLAGtn</C_ADDRESS><C_NATIONKEY>4</C_NATIONKEY><C_PHONE>14-128-190-5944</C_PHONE><C_ACCTBAL>2866.83</C_ACCTBAL><C_MKTSEGMENT>MACHINERY</C_MKTSEGMENT><C_COMMENT>slyly final accounts sublate carefully. slyly ironic asymptotes nod across the quickly regular pack</C_COMMENT></T> <T><C_CUSTKEY>5</C_CUSTKEY><C_NAME>Customer#000000005</C_NAME><C_ADDRESS>KvpyuHCplrB84WgAiGV6sYpZq7Tj</C_ADDRESS><C_NATIONKEY>3</C_NATIONKEY><C_PHONE>13-750-942-6364</C_PHONE><C_ACCTBAL>794.47</C_ACCTBAL><C_MKTSEGMENT>HOUSEHOLD</C_MKTSEGMENT><C_COMMENT>blithely final instructions haggle; stealthy sauternes nod; carefully regu</C_COMMENT></T> </table> with the following java code: package xmlparserformining; import java.util.List; import java.util.Iterator; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.Node; import org.dom4j.io.SAXReader; public class XmlParserForMining { public static Document getDocument( final String xmlFileName ) { Document document = null; SAXReader reader = new SAXReader(); try { document = reader.read( xmlFileName ); } catch (DocumentException e) { e.printStackTrace(); } return document; } public static void main(String[] args) { String xmlFileName = "/home/r/javaCodez/parsing in java/customer.xml"; String xPath = "//table/T/C_ADDRESS"; Document document = getDocument( xmlFileName ); List<Node> nodes = document.selectNodes( xPath ); System.out.println(nodes.size()); for (Node node : nodes) { String customer_address = node.valueOf(xPath); System.out.println( "Customer address: " + customer_address); } } } However, instead of getting all the various customer records, I am getting the following output: 1500 Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E Customer address: IVhzIApeRb ot,c,E and so on .. What is wrong here? Why is it printing only the first record ?

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  • DLL dependant on curllib.dll - How can I fix this?

    - by haraldo
    Hi there, I'm new to developing in C++. I've developed a dll where I'm using curllib to make HTTP requests. When running the dll via depend.exe it notifies me that my dll now depends on the curllib.dll. This simply doesn't work for me. My dll is set as a static library not shared and will be distributed on its own. I cannot rely on a user having libcurl.dll installed. I thought by including libcurl into my project this is all that would be needed and my dll could be independent. If this is impossible to resolve is there an alternative method I can use to create HTTP requests? Obviously I would prefer to use libcurl. Thanks in advance.

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  • AesCryptoServiceProvider not part of SymmetricAlgorithm?

    - by user330006
    I have a quick little app that steps through the possible symmetric encryption methods. I get them with the following line: private static List<Type> GetAlgorithmTypes { get { return Assembly.GetAssembly(typeof(SymmetricAlgorithm)).GetTypes().Where( type => type.IsSubclassOf(typeof(SymmetricAlgorithm))).ToList(); } } As you can see when i run this, AesCryptoServiceProvider is not a member of this group, even though it inherits from AES, which does belong to SymmetricAlgorithm and shows up in my list. This wouldn't be so much of a problem, i can manually add the provider in the group if i have too, but then if i try to retrieve this type by its name: Type t = Type.GetType("System.Security.Cryptography.AesCryptoServiceProvider"); i get a null object for AesCryptoServiceProvider, but not for any of the other items in the group. This is really strange, and i'm wondering if anyone has any ideas. It's kinda making me need to use tripleDES because of this (since my machines are all running the FIPS compliance requirement). Thanks for any help!

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  • how can i get proper Uri of a particular contact in android 2.1

    - by Rishabh
    I have written an application and added 2 contacts on emulator, but i am not able to update their names on android 2.1, code is working on android 1.6 platform with the following code. ContentValues contactValues = new ContentValues(); contactValues.put(Contacts.People.NAME, firstName+" "+lastName); getContentResolver().update(UpdateContactUri, contactValues, null, null); In android 1.6 i am getting Uri for those two contacts are "content:// contacts/people/1" and "content://contacts/people/2". but in 2.1 I am getting these values are "content://contacts/people/8" and "content://contacts/people/9" and while updating its giving "java.IllegalArgumentException, Empty values" exception. When i tried to put a static Uri like "content://contacts/people/1", code was debugged sucessfully but contact was not updated. How can i resolve it, why i am not getting uri like 1.6 platform ? Thanks in advance...

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  • Twitter date unparseable?

    - by Andreas
    Hi, I want to convert the date string in a Twitter response to a Date object, but I always get a ParseException and I cannot see the error!?! Input string: Thu Dec 23 18:26:07 +0000 2010 SimpleDateFormat Pattern: EEE MMM dd HH:mm:ss ZZZZZ yyyy Method: public static Date getTwitterDate(String date) { SimpleDateFormat sf = new SimpleDateFormat(TWITTER); sf.setLenient(true); Date twitterDate = null; try { twitterDate = sf.parse(date); } catch (Exception e) {} return twitterDate; } I also tried this: http://friendpaste.com/2IaKdlT3Zat4ANwdAhxAmZ but that gives the same result. I use Java 1.6 on Mac OS X. Cheers, Andi

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  • Handling duplicate nodes in XML

    - by JYelton
    Scenario: I am parsing values from an XML file using C# and have the following method: private static string GetXMLNodeValue(XmlNode basenode, string strNodePath) { if (basenode.SelectSingleNode(strNodePath) != null) return (basenode.SelectSingleNode(strNodePath).InnerText); else return String.Empty; } To get a particular value from the XML file, I generally pass the root node and a path like "parentnode/item" I recently ran into an issue where two nodes at the same document level share the same name. Question: What is the best way to get the values for duplicate-named nodes distinctly? My thought was to load all values matching the node name into an array and then using the array index to refer to them. I'm not sure how to implement that, though. (I'm not well-versed in XML navigation.)

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  • input file cannot be found

    - by Eric Smith
    I am just messing around with reading input files with java until I got stumped at the most basic of steps... finding the input file! The input.txt file is in the same directory as my class file that is calling it yet eclipse still gives me an error that it cant be found: "Exception in thread "main" java.lang.Error: Unresolved compilation problem: Unhandled exception type FileNotFoundException" My code: package pa; import java.util.Scanner; public class Project { public static void main(String[] args) { java.io.File file = new java.io.File("input.txt"); System.out.println(file.getAbsolutePath()); Scanner input = new Scanner(file); } } input.txt is in the same package, same folder and everything. I'm confused :(

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  • Cache Wrapper with expressions

    - by Fujiy
    I dont know if is possible. I want a class to encapsulate all Cache of my site. I thinking about the best way to do this to avoid conflict with keys. My first idea is something like this: public static TResult Cachear<TResult>(this Cache cache, Expression<Func<TResult>> funcao) { string chave = funcao.ToString(); if (!(cache[chave] is TResult)) { cache[chave] = funcao.Compile()(); } return (TResult)cache[chave]; } Is the best way? Ty

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  • context.getContextResolved appliaction stopped - begginner in java

    - by Szymad
    I have a problem with my app. I'm trying to execute query, but app stops every time. This error occurs while trying to execute query. I'm learing from Android Pro 3 book, but code presented in this book is deprecated. package com.example.contactsabuout; import android.net.Uri; import android.os.Bundle; import android.provider.Contacts; import android.provider.ContactsContract; import android.app.Activity; import android.database.Cursor; import android.util.Log; import android.content.Context; import android.view.Menu; import android.view.View; import android.widget.TextView; public class MainActivity extends Activity { private static Context context; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); MainActivity.context = getApplicationContext(); Log.v("INFO", "Completed: onCreate."); } public static Context getAppContext() { return MainActivity.context; } public void doQuery(View view) { Uri peopleBaseUri = ContactsContract.Contacts.CONTENT_URI; Log.v("II","Button clicked."); Log.v("II", "Uri for ContactsContract.Contacts: " + peopleBaseUri); Context context = getAppContext(); Log.v("II", "Got context: " + context); Cursor cur; Log.v("II", "Created cursor: cur"); cur = context.getContentResolver().query(peopleBaseUri, null, null, null, null); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } } FROM LogCat 10-28 17:45:02.513: V/INFO(4677): Completed: onCreate. 10-28 17:45:02.613: D/libEGL(4677): loaded /system/lib/egl/libGLES_android.so 10-28 17:45:02.653: D/libEGL(4677): loaded /system/lib/egl/libEGL_adreno200.so 10-28 17:45:02.723: D/libEGL(4677): loaded /system/lib/egl/libGLESv1_CM_adreno200.so 10-28 17:45:02.723: D/libEGL(4677): loaded /system/lib/egl/libGLESv2_adreno200.so 10-28 17:45:03.014: I/Adreno200-EGLSUB(4677): <ConfigWindowMatch:2078>: Format RGBA_8888. 10-28 17:45:03.054: D/OpenGLRenderer(4677): Enabling debug mode 0 10-28 17:45:03.254: D/OpenGLRenderer(4677): has fontRender patch 10-28 17:45:03.274: D/OpenGLRenderer(4677): has fontRender patch 10-28 17:45:12.873: V/II(4677): Button clicked. 10-28 17:45:12.873: V/II(4677): Uri for ContactsContract.Contacts: content://com.android.contacts/contacts, rest will be null 10-28 17:45:12.873: V/II(4677): Got context: android.app.Application@40d83d90 10-28 17:45:12.873: V/II(4677): Created cursor: cur 10-28 17:45:12.933: D/AndroidRuntime(4677): Shutting down VM 10-28 17:45:12.933: W/dalvikvm(4677): threadid=1: thread exiting with uncaught exception (group=0x40aaf228) 10-28 17:45:12.953: E/AndroidRuntime(4677): FATAL EXCEPTION: main 10-28 17:45:12.953: E/AndroidRuntime(4677): java.lang.IllegalStateException: Could not execute method of the activity 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.view.View$1.onClick(View.java:3071) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.view.View.performClick(View.java:3538) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.view.View$PerformClick.run(View.java:14330) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.os.Handler.handleCallback(Handler.java:608) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.os.Handler.dispatchMessage(Handler.java:92) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.os.Looper.loop(Looper.java:156) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.app.ActivityThread.main(ActivityThread.java:4977) 10-28 17:45:12.953: E/AndroidRuntime(4677): at java.lang.reflect.Method.invokeNative(Native Method) 10-28 17:45:12.953: E/AndroidRuntime(4677): at java.lang.reflect.Method.invoke(Method.java:511) 10-28 17:45:12.953: E/AndroidRuntime(4677): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 10-28 17:45:12.953: E/AndroidRuntime(4677): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 10-28 17:45:12.953: E/AndroidRuntime(4677): at dalvik.system.NativeStart.main(Native Method) 10-28 17:45:12.953: E/AndroidRuntime(4677): Caused by: java.lang.reflect.InvocationTargetException 10-28 17:45:12.953: E/AndroidRuntime(4677): at java.lang.reflect.Method.invokeNative(Native Method) 10-28 17:45:12.953: E/AndroidRuntime(4677): at java.lang.reflect.Method.invoke(Method.java:511) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.view.View$1.onClick(View.java:3066) 10-28 17:45:12.953: E/AndroidRuntime(4677): ... 11 more 10-28 17:45:12.953: E/AndroidRuntime(4677): Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.contacts.HtcContactsProvider2 uri content://com.android.contacts/contacts from pid=4677, uid=10155 requires android.permission.READ_CONTACTS 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.os.Parcel.readException(Parcel.java:1332) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:182) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:136) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.content.ContentProviderProxy.query(ContentProviderNative.java:406) 10-28 17:45:12.953: E/AndroidRuntime(4677): at android.content.ContentResolver.query(ContentResolver.java:315) 10-28 17:45:12.953: E/AndroidRuntime(4677): at com.example.contactsabuout.MainActivity.doQuery(MainActivity.java:47) 10-28 17:45:12.953: E/AndroidRuntime(4677): ... 14 more I'm trying to learn android.

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  • C# 'is' type check on struct - odd .NET 4.0 x86 optimization behavior

    - by Jacob Stanley
    Since upgrading to VS2010 I'm getting some very strange behavior with the 'is' keyword. The program below (test.cs) outputs True when compiled in debug mode (for x86) and False when compiled with optimizations on (for x86). Compiling all combinations in x64 or AnyCPU gives the expected result, True. All combinations of compiling under .NET 3.5 give the expected result, True. I'm using the batch file below (runtest.bat) to compile and test the code using various combinations of compiler .NET framework. Has anyone else seen these kind of problems under .NET 4.0? Does everyone else see the same behavior as me on their computer when running runtests.bat? #@$@#$?? Is there a fix for this? test.cs using System; public class Program { public static bool IsGuid(object item) { return item is Guid; } public static void Main() { Console.Write(IsGuid(Guid.NewGuid())); } } runtest.bat @echo off rem Usage: rem runtest -- runs with csc.exe x86 .NET 4.0 rem runtest 64 -- runs with csc.exe x64 .NET 4.0 rem runtest v3.5 -- runs with csc.exe x86 .NET 3.5 rem runtest v3.5 64 -- runs with csc.exe x64 .NET 3.5 set version=v4.0.30319 set platform=Framework for %%a in (%*) do ( if "%%a" == "64" (set platform=Framework64) if "%%a" == "v3.5" (set version=v3.5) ) echo Compiler: %platform%\%version%\csc.exe set csc="C:\Windows\Microsoft.NET\%platform%\%version%\csc.exe" set make=%csc% /nologo /nowarn:1607 test.cs rem CS1607: Referenced assembly targets a different processor rem This happens if you compile for x64 using csc32, or x86 using csc64 %make% /platform:x86 test.exe echo =^> x86 %make% /platform:x86 /optimize test.exe echo =^> x86 (Optimized) %make% /platform:x86 /debug test.exe echo =^> x86 (Debug) %make% /platform:x86 /debug /optimize test.exe echo =^> x86 (Debug + Optimized) %make% /platform:x64 test.exe echo =^> x64 %make% /platform:x64 /optimize test.exe echo =^> x64 (Optimized) %make% /platform:x64 /debug test.exe echo =^> x64 (Debug) %make% /platform:x64 /debug /optimize test.exe echo =^> x64 (Debug + Optimized) %make% /platform:AnyCPU test.exe echo =^> AnyCPU %make% /platform:AnyCPU /optimize test.exe echo =^> AnyCPU (Optimized) %make% /platform:AnyCPU /debug test.exe echo =^> AnyCPU (Debug) %make% /platform:AnyCPU /debug /optimize test.exe echo =^> AnyCPU (Debug + Optimized) Test Results When running the runtest.bat I get the following results on my Win7 x64 install. > runtest 32 v4.0 Compiler: Framework\v4.0.30319\csc.exe False => x86 False => x86 (Optimized) True => x86 (Debug) False => x86 (Debug + Optimized) True => x64 True => x64 (Optimized) True => x64 (Debug) True => x64 (Debug + Optimized) True => AnyCPU True => AnyCPU (Optimized) True => AnyCPU (Debug) True => AnyCPU (Debug + Optimized) > runtest 64 v4.0 Compiler: Framework64\v4.0.30319\csc.exe False => x86 False => x86 (Optimized) True => x86 (Debug) False => x86 (Debug + Optimized) True => x64 True => x64 (Optimized) True => x64 (Debug) True => x64 (Debug + Optimized) True => AnyCPU True => AnyCPU (Optimized) True => AnyCPU (Debug) True => AnyCPU (Debug + Optimized) > runtest 32 v3.5 Compiler: Framework\v3.5\csc.exe True => x86 True => x86 (Optimized) True => x86 (Debug) True => x86 (Debug + Optimized) True => x64 True => x64 (Optimized) True => x64 (Debug) True => x64 (Debug + Optimized) True => AnyCPU True => AnyCPU (Optimized) True => AnyCPU (Debug) True => AnyCPU (Debug + Optimized) > runtest 64 v3.5 Compiler: Framework64\v3.5\csc.exe True => x86 True => x86 (Optimized) True => x86 (Debug) True => x86 (Debug + Optimized) True => x64 True => x64 (Optimized) True => x64 (Debug) True => x64 (Debug + Optimized) True => AnyCPU True => AnyCPU (Optimized) True => AnyCPU (Debug) True => AnyCPU (Debug + Optimized) tl;dr

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