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• Unable to install Maven: "JAVA_HOME is set to an invalid directory"

  - by hello_world_infinity

  I followed the Maven tutorial to the letter but I still can't get Maven installed. When I run the following in command prompt: E:\Documents and Settings\zach>mvn --version I get: 'mvn' is not recognized as an internal or external command, operable program or batch file. I navigated to the maven install folder and ran mvn --version and got: E:\java resources\apache-maven-2.2.0\bin>mvn --version ERROR: JAVA_HOME is set to an invalid directory. JAVA_HOME = "E:\Sun\SDK\jdk\bin" Please set the JAVA_HOME variable in your environment to match the location of your Java installation but when I run java -version I get: java version "1.6.0_14" Java(TM) SE Runtime Environment (build 1.6.0_14-b08) Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode) So I do have Java installed. Anyone know what the problem is?

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• How to make the yuicompressor jar file a singleton, or globally accessible?

  - by Erik Vold

  I'd like to put the yuicompressor jar file in a single folder so that I can call java -jar yuicompressor-2.4.2.jar ... from anywhere on my system, with cygwin. For bash files I use I simply put them in a common folder, and added the folder's path to my windows user's PATH environment variable and the bash commands were found in cygwin. when I echo $PATH I see the folder I put the yuicompressor jar into listed in the $PATH.. But when I try java -jar yuicompressor-2.4.2.jar ... I get the following error message: Unable to access jarfile yuicompressor-2.4.2.jar Even when I try providing an absolute path to the jarfile I get the same error message.. How can I do this?

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• How to get element content by id from HTML object by JavaScript ( JQuery )

  - by Space Cracker

  i write the following code to access page "JQueryPage.aspx" and get data from it using jQuery <script type="text/javascript"> $.get ( "JQueryPage.aspx", function(data) { alert("Data Loaded: " + data); } ); </script> "JQueryPage.aspx" is just a page that contain DIV called 'resultsDIV' that contain the data that i want to return the above code return data variable that contain "JQueryPage.aspx" html and i want to get DIV content from it .. i have 2 questions: 1- how can i extract DIV content from data object 2- is this way is th best to get that data ?

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• Java generics SuppressWarnings("unchecked") mystery

  - by Johannes Ernst

  Why does code alternative(1) compile without warnings, and code alternative(2) produce an "unchecked cast" warning? Common for both: class Foo<T> { Foo( T [] arg ) { } } Alternative (1): class Bar<T> extends Foo<T> { protected static final Object [] EMPTY_ARRAY = {}; @SuppressWarnings("unchecked") Bar() { super( (T []) EMPTY_ARRAY ); } } Alternative (2): class Bar<T> extends Foo<T> { @SuppressWarnings("unchecked") Bar() { super( (T []) EMPTY_ARRAY ); } protected static final Object [] EMPTY_ARRAY = {}; } Alternative (2) produces: javac -Xlint:unchecked Foo.java Bar.java Bar.java:4: warning: [unchecked] unchecked cast super( (T []) EMPTY_ARRAY ); ^ required: T[] found: Object[] where T is a type-variable: T extends Object declared in class Bar 1 warning This is: java version "1.7.0_07" Java(TM) SE Runtime Environment (build 1.7.0_07-b10) Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)

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• Why do I get Code Analysis CA1062 on an out parameter in this code?

  - by brickner

  I have a very simple code (simplified from the original code - so I know it's not a very clever code) that when I compile in Visual Studio 2010 with Code Analysis gives me warning CA1062: Validate arguments of public methods. public class Foo { protected static void Bar(out int[] x) { x = new int[1]; for (int i = 0; i != 1; ++i) x[i] = 1; } } The warning I get: CA1062 : Microsoft.Design : In externally visible method 'Foo.Bar(out int[])', validate local variable '(*x)', which was reassigned from parameter 'x', before using it. I don't understand why do I get this warning and how can I resolve it without suppressing it? Can new return null? Is this a Visual Studio 2010 bug?

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• Newbie Question: Read and Process a List of Text Files

  - by johnv

  I'm completely new to .NET and am trying as a first step to write a text processing program. The task is simple: I have a list of 10,000 text files stored in one folder, and I'm trying to read each one, store it as a string variable, then run it through a series of functions, then save the final output to another folder. So far I can only manage to manually input the file path like this (in VB.NET): Dim tRead As System.IO.StreamReader Public Function ReadFile() As String Dim EntireFile As String tRead = File.OpenText("c:\textexample\00001.txt") EntireFile = tRead.ReadToEnd Return EntireFile End Function Public Function Step1() ..... End Function Public Function Step2() ..... End Function .............. I'm wondering, therefore, if there's a way to automate this process. Perhaps for example store all input file path into a text file then read each entry at a time, then save the final output into the save path, again listed in a text file. Any help is greatly appreciated. ReplyQuote

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• Stata output files in surveys

  - by William Shakespeare

  I have some survey data which I'm using Stata to analyze. I want to compute means of one variable by group and save those means to a Stata file. My code looks like this: svyset [iw=wtsupp], sdrweight(repwtp1-repwtp160) vce(sdr) svy: mean x I tried svy: by grp: mean x but that did not work. I could save each mean to a separate file by simply saying svy: mean x if grp==1 but that's inefficient. Is there a better way? Saving results to a file like one can use SAS ODS to capture results is also a need. I am not talking about the log here. I need the means and the associated group. I'm thinking estimates save [path],replace but I'm not sure if that will give me a Stata file or the group if I can figure out how to use by processing.

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• C# IQueryable<T> does my code make sense?

  - by Pandiya Chendur

  I use this to get a list of materials from my database.... public IQueryable<MaterialsObj> FindAllMaterials() { var materials = from m in db.Materials join Mt in db.MeasurementTypes on m.MeasurementTypeId equals Mt.Id select new MaterialsObj() { Id = Convert.ToInt64(m.Mat_id), Mat_Name = m.Mat_Name, Mes_Name = Mt.Name, }; return materials; } But i have seen in an example that has this, public IQueryable<MaterialsObj> FindAllMaterials() { return from m in db.Materials join Mt in db.MeasurementTypes on m.MeasurementTypeId equals Mt.Id select new MaterialsObj() { Id = Convert.ToInt64(m.Mat_id), Mat_Name = m.Mat_Name, Mes_Name = Mt.Name, }; } Is there a real big difference between the two methods... Assigning my linq query to a variable and returning it... Is it a good/bad practise? Any suggestion which should i use?

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• Why does GetClusterShape return null when the cluster specification was retrieved through the GetClu

  - by Markus Olsson

  Suppose I have a virtual earth shape layer called shapeLayer1 (my creative energy is apparently at an alltime low). When i call the GetClusteredShapes method I get an array of VEClusterSpecification objects that represent each and every one of my currently visible clusters; no problem there. But when I call the GetClusterShape() method it returns null... null! Why on earth would it do that? I used firebug to confirm that the private variable of the VEClusterSpecification that's supposed to hold a reference to the shape is indeed null so it's not the method that's causing the problem. Some have suggested that this is actually documented behavior Returns null if a VEClusterSpecification object was returned from the VEShapeLayer.GetClusteredShapes Method But looking at the current MSDN documentation for the VEShape class it says: Returns if a VEClusterSpecification object was returned from the VEShapeLayer.GetClusteredShapes Method Is this a bug or a feature? Is there any known workarounds or (if it is a bug) some plan on when they are going to fix it?

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• How to update an element with a List using LINQ and C#

  - by Addie

  I have a list of objects and I'd like to update a particular member variable within one of the objects. I understand LINQ is designed for query and not meant to update lists of immutable data. What would be the best way to accomplish this? I do not need to use LINQ for the solution if it is not most efficient. Would creating an Update extension method work? If so how would I go about doing that? EXAMPLE: (from trade in CrudeBalancedList where trade.Date.Month == monthIndex select trade).Update( trade => trade.Buy += optionQty);

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• need some jquery if-else statement help

  - by zeemy23

  Hello, the code below is broken, but I'm not sure how. I've definitely made some big assumptions here as a newbie. I'm basically trying to create an if else where imBannerRotater functions on #cast if the variable is true and #pram if it is false. How could I fix this to get that result? The # are URLs. Thanks!-zeem $(document).ready(function(){ if (mmjsRegionName == 'CO') { $("#cast").imBannerRotater({ return_type: 'json', data_map: { image_name: 'name', url_name: 'url' }, image_url: '#', base_path: '#', }); } else { $("#pram").imBannerRotater({ return_type: 'json', data_map: { image_name: 'name', url_name: 'url' }, image_url: '#', base_path: '#', }); });

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• Switching between multiple stacks in gdb 6.3

  - by flagmore

  Hello! There are two stacks in the program: one is created by OS and the second is created by program itself to run some code with it. When the program crashes in the second stack, I want to switch to the main stack in gdb and see the backtrace. Is it possible? I tried to save the rsp to a variable and change it after the crash, but the resulting backtrace was not right. I think gdb cannot differentiate frames in stack.

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• Binding multiple arrays for WHERE IN in PostgreSQL

  - by Alec

  So I want to prepare a query something like: SELECT id FROM users WHERE (branch, cid) IN $1; But I then need to bind a variable length list of arrays like (('a','b'),('c','d')) to it. How do I go about doing this? I've tried using ANY but can't seem to get the syntax right. Cheers, Alec Edit: After some fiddling around, this is valid syntactically: SELECT id FROM users WHERE (branch, cid) = ANY ($1::text[][]); and then binding the string '{{a,b},{c,d}}' to $1 but throws the error "operator does not exist: record = text". Changing 'text' to 'record' then throws "input of anonymous composite types is not implemented". Any ideas?

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• Wordpress auto excerpts from post content?

  - by Scott B

  I'm trying to create an auto generated post excerpt from the current page's post content using a function in my theme's header file. The post excerpt will be used as the page's meta description. Can someone give me an idea of how you might go about this once you've got the post content into a string variable? The somewhat tricky part is that, in order to predict a viable stopping point for the post excerpt, I'd like to specify that the cutoff point be the end of the first paragraph of text. And for that reason, it does not make sense to load the entire post content into the string I'm using. Can I grab the first paragraph without having to load the entire post content string? And I'm not certain how to test for that in php. Would regex be the only way?

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• How to read a file byte by byte in Python and how to print a bytelist as a binary?

  - by zaplec

  Hi, I'm trying to read a file byte by byte, but I'm not sure how to do that. I'm trying to do it like that: file = open(filename, 'rb') while 1: byte = file.read(8) # Do something... So does that make the variable byte to contain 8 next bits at the beginning of every loop? It doesn't matter what those bytes really are. The only thing that matters is that I need to read a file in 8-bit stacks. EDIT: Also I collect those bytes in a list and I would like to print them so that they don't print out as ASCII characters, but as raw bytes i.e. when I print that bytelist it gives the result as ['10010101', '00011100', .... ]

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• SWT Filedialog Open into home folder

  - by Ivan

  I want to open a FileDialog window into the user home folder (i.e. /home/user or /Users/unsername) I read the user home folder, using System.getProperty: String homefolder = System.getProperty(user.home); And the variable containts the correct home folder. But when i set the filterpath in FileDialog, it opens (in linux) only the /home level not entering into the user home dir. This is the source code: FileDialog dialog = new FileDialog(shell); dialog.setText("Choose a certificate"); String platform = SWT.getPlatform(); String homefolder = System.getProperty("user.home"); dialog.setFilterPath(homefolder); Any idea? Here a screenshot:

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• Can't Use Path in ASP MVC Action

  - by user1477388

  I am trying to use Path() but it has a blue line under it and says, "local variable (path) cannot be referred to until it is declared." How can I use Path()? Imports System.Globalization Imports System.IO Public Class MessageController Inherits System.Web.Mvc.Controller <EmployeeAuthorize()> <HttpPost()> Function SendReply(ByVal id As Integer, ByVal message As String, ByVal files As IEnumerable(Of HttpPostedFileBase)) As JsonResult ' upload files For Each i In files If (i.ContentLength > 0) Then Dim fileName = path.GetFileName(i.FileName) Dim path = path.Combine(Server.MapPath("~/App_Data/uploads"), fileName) i.SaveAs(path) End If Next End Function End Class

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• Overwriting arguments object for a Javascript function

  - by Ian Storm Taylor

  If I have the following: // Clean input. $.each(arguments, function(index, value) { arguments[index] = value.replace(/[\W\s]+/g, '').toLowerCase(); }); Would that be a bad thing to do? I have no further use for the uncleaned arguments in the function, and it would be nice not to create a useless copy of arguments just to use them, but are there any negative effects to doing this? Ideally I would have done this, but I'm guessing this runs into problems since arguments isn't really an Array: arguments = $.map(arguments, function(value) { return value.replace(/[\W\s]+/g, '').toLowerCase(); }); Thanks for any input. EDIT: I've just realized that both of these are now inside their own functions, so the arguments object has changed. Any way to do this without creating an unnecessary variable?

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• How do I "Fire and forget" a WinForms Form?

  - by Neil Barnwell

  What's a good technique to create a WinForms Form instance, display it (non-modally) but not have to keep a reference around to it? Normally, as soon as the variable goes out of scope, the form is closed: var form = new SuperDuperForm(); form.Show(); // Form has probably been closed instantly I don't want to have to keep track of instances of the form, I want it so that when the user closes the form, it is disposed. One idea I've had that I'm going to implement is a kind of controller that I use to open and display forms, that will keep track of them and monitor when they are closed via callbacks. I'm just wondering if there are any neat tricks to get away without that. Any ideas?

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• Find top "n" nearby coordinates.

  - by John Hamelink

  I have a coordinate. I want to find the top "n" (n being a variable value) nearest coordinates out of several thousand rows stored on a MySQL database. I also want to be able to define maximum and minimum distances between the coordinate in question and the coordinates in the database. How best am I to go about this? Would it be bonkers to use PHP as I understand the syntax much better than MySQL? If I use a MySQL function, how do I move it between databases if I choose to switch servers? How is it stored? Lastly, what is the most efficient method of getting through all these coordinates accurately - the coordinates are all relatively close to one another? Thanks for your time, John.

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• Developing Qt applications in Unix systems using Qt Creator

  - by Jake Petroules

  I'm developing a Qt application in Linux using Qt Creator (2.1 RC). I've created 2 projects, and used the wizard to add the library project to the application project. However when I run it, I receive the error: /home/jakepetroules/silverlock/silverlock-build-desktop/desktop/silverlock: error while loading shared libraries: libsilverlocklib.so.1: cannot open shared object file: No such file or directory Is there some qmake variable I can set so that Qt Creator will set up the environment properly to run? It's quite annoying to have to copy all the files to another directory with a launcher script just to be able to test the build. On Windows it works perfectly - Qt Creator automatically adds the directories containing the DLLs to the PATH when it runs your application (where running it from Explorer would say DLL not found). Mac OS X is even worse, having to run install_name_tool on everything... So how can I set up my qmake files so everything works right from the run button in Qt Creator? Kind of hard to debug without this ability, too.

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• Serving files over HTTPS dynamically based on request.ssl? with Attachment_fu

  - by Marston A.

  I see there is a :user_ssl option in attachment_fu which checks the amazon_s3.yml file in order to serve files via https:// In the s3_backend.rb you have this method: def self.protocol @protocol ||= s3_config[:use_ssl] ? 'https://' : 'http://' end But this then makes it serve ALL s3 attachments with SSL. I'd like to make it dynamic depending if the current request was made with https:// i.e: if request.ssl? @protocol = "https://" else @protocol = "http://" end How can I make it work in this way? I've tried modifying the method and then get the NameError: undefined local variable or method `request' for Technoweenie::AttachmentFu::Backends::S3Backend:Module error

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• Is there any way to code breakpoints/debugging?

  - by froadie

  I've been wondering this for a while - is there a way to code/program breakpoints...? Conditionally? For example, can I specify something like - "when this variable becomes this value, break and open the debugger"? (Would be quite useful, especially in long loops when you want to debug loop execution of a late loop value.) I suppose this may be IDE-specific since debugging is implemented differently in different IDEs... I'd be interested to know how to do this in any IDE, but specifically in Eclipse and Visual Studio.

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• Uploading a picture to a album using the graph api

  - by kielie

  Hi guys, I am trying to upload an image to a album, but it's not working, here is the code I am using, $uid = $facebook->getUser(); $args = array('message' => $uid); $file_path = "http://www.site.com/path/to/file.jpg"; $album_id = '1234'; $args['name'] = '@' . realpath($file_path); $data = $facebook->api('/'. $album_id . '/photos', 'post', $args); print_r($data); This code is in a function.php file that gets called when a user clicks on a button inside of a flash file that is embedded on my canvas, so basically what I want it to do is, when the flash takes a screen shot and passes the variable "image" to the function, it should upload $_GET['image'] to the album. How could I go about doing this? Thanx in advance!

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• Using NSURLRequest+NSURLConnection seems overkill for a webcall with no data return

  - by Spectravideo328

  All, This might seems very straightforward but I have already gone through the URL loading system program guide and the various NSURL.... classes and not found my answer. I am just trying to do a simple call from the app to a website to reserve a party spot: NSString *path=[NSString stringWithFormat:@"http://www.myparty123.com/ireservedURL.asp?Nickname=%@&Seat=%i&Email=%@&Currentparty=%i",john,5432,[email protected],6598]; NSURL* reservationURL =[NSURL URLWithString:path]; NSData *call= [NSData dataWithContentsOfURL:reservationURL]; This seemed to be the simple way but I get this warning that I am not using the "call" variable. And it seems overkill to do a call using NSData where there is no data return. Yet, creating an NSURLRequest and initiating an NSURLConnection and then implementing delegates with that request seems to be overkill as well. What am I missing. Thanks KMB

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