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  • JavaScript: How to download JS asynchronously?

    - by Teddyk
    On my web site, I'm trying to accomplishes the fastest page load as possible. I've noticed that it appears my JavaScript are not loading asynchronously. Picture linked below. How my web site works is that it needs to load two external JavaScript files: Google Maps v3 JavaScript, and JQuery JavaScript Once it loads these external javascript files, it then, and only then, can dynamically render the page. The reason why my page can't load until both Google Maps and JQuery are loaded is that - my page, based on the geolocation (using Gmaps) of the user will then display the page based on where they are located (e.g. New York, San Francisco, etc). Meaning, two people in different cities viewing my site will see different frontpages. Question: How can I get my JavaScript files to download asynchronously so that my overall page load time is quicker?

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  • Making JQuery horizontal accordion close on click

    - by user310404
    Example: http://vincent-massaro.com/map/ Currently, the script allows you to click on a piece of the accordion to open it, but it is set to close on mouseleave. When I set the mouseleave to .click, it gets confused and doesn't know what state it is in. The code controlling this is below, and the full script is in haccordion.js linked in the page source. If someone could help me modify this script, I would be very grateful! Thanks in advance. $target.click(function(){ haccordion.expandli(config.accordionid, this) config.$lastexpanded=$(this) }) if (config.collapsecurrent){ //if previous content should be contracted when expanding current $target.mouseleave(function(){ $(this).stop().animate({width:config.paneldimensions.peekw}, config.speed) }) }

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  • What is the best way to expose a callback API - C++

    - by rursw1
    Hi, I have a C++ library that should expose some system\ resource calls as callbacks from the linked application. For example: the interfacing application (which uses this library) can send socket management callback functions - send, receive, open, close etc., and the library will use this implementation in stead of the library's implementation. (This way enables the application to manage the sockets by itself, can be useful). This library has to expose also more callbacks, like, for example, a password validation, so I wonder if there is a preferred method to expose the callback sending option in one API. Something like: int AddCallbackFunc (int functionCallbackType, <generic function prototype>, <generic way to pass some additional arguments>) Then within my library I will assign the callback to the appropriate function pointer according to the functionCallbackType parameter. Is there any way to implement it in a generic way which will fit ANY function prototype and ANY additional arguments? Your help will be more than appreciated... Thanks!

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  • Constant template parameter class manages to link externally

    - by the_drow
    I have a class foo with an enum template parameter and for some reason it links to two versions of the ctor in the cpp file. enum Enum { bar, baz }; template <Enum version = bar> class foo { public: foo(); }; // CPP File #include "foo.hpp" foo<bar>::foo() { cout << "bar"; } foo<baz>::foo() { cout << "baz"; } I'm using msvc 2008, is this the standard behavior? Are only type template parameters cannot be linked to cpp files?

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  • Temp modification of NHibernate Entities

    - by Marty Trenouth
    Is there a way I can tell Nhibernate to ignore any future changes on a set of objects retrieved using it? public ReturnedObject DoIt() { List<MySuperDuperObject> awesomes = repository.GetMyAwesomenesObjects(); var sp = new SuperParent(); BusinessObjectWithoutNHibernateAccess.ProcessThese(i, awesomes,sp) repository.save(sp); return i; } public ReturnedObject FakeIt() { List<MySuperDuperObject> awesomes = repository.GetMyAwesomenesObjects(); var sp = new SuperParent(); // should something go here to tell NHibernate to ignore changes to awesomes and sp? return BusinessObjectWithoutNHibernateAccess.ProcessThese(awesomes,sp) }

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  • Forwarding activity result to parent, with singleTop launch mode

    - by Joe
    I have two activities: a MainListActivity, and a DetailViewActivity. DetailViewActivity is set with android:launchMode="singleTop". When clicking an item in the "main list" activity, it launches the "detail view" activity via: startActivityForResult(detailIntent, REQUEST_CODE_DETAIL); If I then call setResult(RESULT_OK, resultData); and finish(); from within the Detail activity, that resultData is received by the "main list" activity's onActivityResult(..) method correctly. However, if I implement a "see previous"/"see next" type of navigation within the Detail activity, and implement it using singleTop, that result no longer gets sent back to the initial activity: Intent nextItemIntent = this.createIntent(nextId); nextItemIntent.setFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT); startActivity(nextItemIntent); // at this point, my DetailActivity's onNewIntent() method is called, and the new data is loaded properly But from here, when I call setResult(..) and finish(), my MainList activity never receives the new/updated result. Anyone know what I'm doing wrong?

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  • Installation error: INSTALL_FAILED_OLDER_SDK in eclipse

    - by user3014909
    I have an unexpe`ted problem with my Android project. I have a real android device with ice_cream sandwich installed. My app was working fine during the development but after I added a class to the project, I got an error: Installation error: INSTALL_FAILED_OLDER_SDK The problem is that everything is good in the manifest file. The minSdkversion is 8. Here is my manifest file: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="zabolotnii.pavel.timer" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="18 " /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="zabolotnii.pavel.timer.TimerActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> I don't know, if there is any need to attach the new class ,but I didn't any changes to other code that should led to this error: package zabolotnii.pavel.timer; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface; import android.graphics.Paint; import android.graphics.Point; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.os.Environment; import android.util.DisplayMetrics; import android.util.TypedValue; import android.view.*; import android.widget.*; import java.io.File; import java.io.FilenameFilter; import java.util.*; public class OpenFileDialog extends AlertDialog.Builder { private String currentPath = Environment.getExternalStorageDirectory().getPath(); private List<File> files = new ArrayList<File>(); private TextView title; private ListView listView; private FilenameFilter filenameFilter; private int selectedIndex = -1; private OpenDialogListener listener; private Drawable folderIcon; private Drawable fileIcon; private String accessDeniedMessage; public interface OpenDialogListener { public void OnSelectedFile(String fileName); } private class FileAdapter extends ArrayAdapter<File> { public FileAdapter(Context context, List<File> files) { super(context, android.R.layout.simple_list_item_1, files); } @Override public View getView(int position, View convertView, ViewGroup parent) { TextView view = (TextView) super.getView(position, convertView, parent); File file = getItem(position); if (view != null) { view.setText(file.getName()); if (file.isDirectory()) { setDrawable(view, folderIcon); } else { setDrawable(view, fileIcon); if (selectedIndex == position) view.setBackgroundColor(getContext().getResources().getColor(android.R.color.holo_blue_dark)); else view.setBackgroundColor(getContext().getResources().getColor(android.R.color.transparent)); } } return view; } private void setDrawable(TextView view, Drawable drawable) { if (view != null) { if (drawable != null) { drawable.setBounds(0, 0, 60, 60); view.setCompoundDrawables(drawable, null, null, null); } else { view.setCompoundDrawables(null, null, null, null); } } } } public OpenFileDialog(Context context) { super(context); title = createTitle(context); changeTitle(); LinearLayout linearLayout = createMainLayout(context); linearLayout.addView(createBackItem(context)); listView = createListView(context); linearLayout.addView(listView); setCustomTitle(title) .setView(linearLayout) .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (selectedIndex > -1 && listener != null) { listener.OnSelectedFile(listView.getItemAtPosition(selectedIndex).toString()); } } }) .setNegativeButton(android.R.string.cancel, null); } @Override public AlertDialog show() { files.addAll(getFiles(currentPath)); listView.setAdapter(new FileAdapter(getContext(), files)); return super.show(); } public OpenFileDialog setFilter(final String filter) { filenameFilter = new FilenameFilter() { @Override public boolean accept(File file, String fileName) { File tempFile = new File(String.format("%s/%s", file.getPath(), fileName)); if (tempFile.isFile()) return tempFile.getName().matches(filter); return true; } }; return this; } public OpenFileDialog setOpenDialogListener(OpenDialogListener listener) { this.listener = listener; return this; } public OpenFileDialog setFolderIcon(Drawable drawable) { this.folderIcon = drawable; return this; } public OpenFileDialog setFileIcon(Drawable drawable) { this.fileIcon = drawable; return this; } public OpenFileDialog setAccessDeniedMessage(String message) { this.accessDeniedMessage = message; return this; } private static Display getDefaultDisplay(Context context) { return ((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); } private static Point getScreenSize(Context context) { Point screeSize = new Point(); getDefaultDisplay(context).getSize(screeSize); return screeSize; } private static int getLinearLayoutMinHeight(Context context) { return getScreenSize(context).y; } private LinearLayout createMainLayout(Context context) { LinearLayout linearLayout = new LinearLayout(context); linearLayout.setOrientation(LinearLayout.VERTICAL); linearLayout.setMinimumHeight(getLinearLayoutMinHeight(context)); return linearLayout; } private int getItemHeight(Context context) { TypedValue value = new TypedValue(); DisplayMetrics metrics = new DisplayMetrics(); context.getTheme().resolveAttribute(android.R.attr.listPreferredItemHeightSmall, value, true); getDefaultDisplay(context).getMetrics(metrics); return (int) TypedValue.complexToDimension(value.data, metrics); } private TextView createTextView(Context context, int style) { TextView textView = new TextView(context); textView.setTextAppearance(context, style); int itemHeight = getItemHeight(context); textView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, itemHeight)); textView.setMinHeight(itemHeight); textView.setGravity(Gravity.CENTER_VERTICAL); textView.setPadding(15, 0, 0, 0); return textView; } private TextView createTitle(Context context) { TextView textView = createTextView(context, android.R.style.TextAppearance_DeviceDefault_DialogWindowTitle); return textView; } private TextView createBackItem(Context context) { TextView textView = createTextView(context, android.R.style.TextAppearance_DeviceDefault_Small); Drawable drawable = getContext().getResources().getDrawable(android.R.drawable.ic_menu_directions); drawable.setBounds(0, 0, 60, 60); textView.setCompoundDrawables(drawable, null, null, null); textView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)); textView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { File file = new File(currentPath); File parentDirectory = file.getParentFile(); if (parentDirectory != null) { currentPath = parentDirectory.getPath(); RebuildFiles(((FileAdapter) listView.getAdapter())); } } }); return textView; } public int getTextWidth(String text, Paint paint) { Rect bounds = new Rect(); paint.getTextBounds(text, 0, text.length(), bounds); return bounds.left + bounds.width() + 80; } private void changeTitle() { String titleText = currentPath; int screenWidth = getScreenSize(getContext()).x; int maxWidth = (int) (screenWidth * 0.99); if (getTextWidth(titleText, title.getPaint()) > maxWidth) { while (getTextWidth("..." + titleText, title.getPaint()) > maxWidth) { int start = titleText.indexOf("/", 2); if (start > 0) titleText = titleText.substring(start); else titleText = titleText.substring(2); } title.setText("..." + titleText); } else { title.setText(titleText); } } private List<File> getFiles(String directoryPath) { File directory = new File(directoryPath); List<File> fileList = Arrays.asList(directory.listFiles(filenameFilter)); Collections.sort(fileList, new Comparator<File>() { @Override public int compare(File file, File file2) { if (file.isDirectory() && file2.isFile()) return -1; else if (file.isFile() && file2.isDirectory()) return 1; else return file.getPath().compareTo(file2.getPath()); } }); return fileList; } private void RebuildFiles(ArrayAdapter<File> adapter) { try { List<File> fileList = getFiles(currentPath); files.clear(); selectedIndex = -1; files.addAll(fileList); adapter.notifyDataSetChanged(); changeTitle(); } catch (NullPointerException e) { String message = getContext().getResources().getString(android.R.string.unknownName); if (!accessDeniedMessage.equals("")) message = accessDeniedMessage; Toast.makeText(getContext(), message, Toast.LENGTH_SHORT).show(); } } private ListView createListView(Context context) { ListView listView = new ListView(context); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapterView, View view, int index, long l) { final ArrayAdapter<File> adapter = (FileAdapter) adapterView.getAdapter(); File file = adapter.getItem(index); if (file.isDirectory()) { currentPath = file.getPath(); RebuildFiles(adapter); } else { if (index != selectedIndex) selectedIndex = index; else selectedIndex = -1; adapter.notifyDataSetChanged(); } } }); return listView; } }

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  • how to display the listbox items to a label using VB2008

    - by Cecilia
    I am trying to display listbox items in a label. After debugging,I get the error : " make sure that the maximun index on the list is less than the list size" any comment will be highly appreciate, Private Sub xMultiButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles xMultiButton.Click Dim count As Integer count = Me.xNamesListBox.Items.Count For count = 0 To 3 Me.xResultLabel.Text = Me.xNamesListBox.SelectedItems.Item(0).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(1).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(2).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(3).ToString & ControlChars.NewLine _ & Me.xNamesListBox.SelectedItems.Item(4).ToString Next End Sub

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  • Is there a class like a Dictionary without a Value template? Is HashSet<T> the correct answer?

    - by myotherme
    I have 3 tables: Foos, Bars and FooBarConfirmations I want to have a in-memory list of FooBarConfirmations by their hash: FooID BarID Hash 1 1 1_1 2 1 2_1 1 2 1_2 2 2 2_2 What would be the best Class to use to store this type of structure in-memory, so that I can quickly check to see if a combination exists like so: list.Contains("1_2"); I can do this with Dictionary<string,anything>, but it "feels" wrong. HashSet looks like the right tool for the job, but does it use some form of hashing algorithm in the background to do the lookups efficiently?

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  • Play 2.0 javaToDo tutorial doesn't compile

    - by chsn
    I'm trying to follow the Play2.0 JavaToDO tutorial and for some reason it just doesn't want to work. Have looked through stackoverflow and other online resources, but haven't find an answer to this and it's driving me crazy. Attached code of the Application.java package controllers; import models.Task; import play.data.Form; import play.mvc.Controller; import play.mvc.Result; public class Application extends Controller { static Form<Task> taskForm = form(Task.class); public static Result index() { return redirect(routes.Application.tasks()); } public static Result tasks() { return ok( views.html.index.render(Task.all(), taskForm)); } public static Result newTask() { return TODO; } public static Result deleteTask(Long id) { return TODO; } } Attached code of the Task java package models; import java.util.List; import javax.persistence.Entity; import play.data.Form; import play.data.validation.Constraints.Required; import play.db.ebean.Model.Finder; import play.mvc.Result; import controllers.routes; @Entity public class Task { public Long id; @Required public String label; // search public static Finder<Long,Task> find = new Finder( Long.class, Task.class); // display tasks public static List<Task> all() { return find.all(); } // create task public static void create(Task task) { task.create(task); } // delete task public static void delete(Long id) { find.ref(id).delete(id); // find.ref(id).delete(); } // create new task public static Result newTask() { Form<Task> filledForm = taskForm.bindFromRequest(); if(filledForm.hasErrors()) { return badRequest( views.html.index.render(Task.all(), filledForm) ); } else { Task.create(filledForm.get()); return redirect(routes.Application.tasks()); } } } I get a compile error on Task.java on the line static Form<Task> taskForm = form(Task.class); As I'm working on eclipse (the project is eclipsified before import), it's telling me that taskForm cannot be resolved and it also underlines every play 2 command e.g. "render(), redirect(), bindFromRequest()" asking me to create a method for it. Any ideas how to solve the compilations error and also how to get Eclipse to recognize the play2 commands? EDIT: updated Application.java package controllers; import models.Task; import play.data.Form; import play.mvc.Controller; import play.mvc.Result; public class Application extends Controller { // create new task public static Result newTask() { Form<Task> filledForm = form(Task.class).bindFromRequest(); if(filledForm.hasErrors()) { return badRequest( views.html.index.render(Task.all(), filledForm) ); } else { Task.newTask(filledForm.get()); return redirect(routes.Application.tasks()); } } public static Result index() { return redirect(routes.Application.tasks()); } public static Result tasks() { return ok( views.html.index.render(Task.all(), taskForm)); } public static Result deleteTask(Long id) { return TODO; } } Updated task.java package models; import java.util.List; import javax.persistence.Entity; import play.data.Form; import play.data.validation.Constraints.Required; import play.db.ebean.Model; import play.db.ebean.Model.Finder; import play.mvc.Result; import controllers.routes; @Entity public class Task extends Model { public Long id; @Required public String label; // Define a taskForm static Form<Task> taskForm = form(Task.class); // search public static Finder<Long,Task> find = new Finder( Long.class, Task.class); // display tasks public static List<Task> all() { return find.all(); } // create new task public static Result newTask(Task newTask) { save(task); } // delete task public static void delete(Long id) { find.ref(id).delete(id); // find.ref(id).delete(); } }

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  • How should I store Dynamically Changing Data into Server Cache?

    - by Scott
    Hey all, EDIT: Purpose of this Website: Its called Utopiapimp.com. It is a third party utility for a game called utopia-game.com. The site currently has over 12k users to it an I run the site. The game is fully text based and will always remain that. Users copy and paste full pages of text from the game and paste the copied information into my site. I run a series of regular expressions against the pasted data and break it down. I then insert anywhere from 5 values to over 30 values into the DB based on that one paste. I then take those values and run queries against them to display the information back in a VERY simple and easy to understand way. The game is team based and each team has 25 users to it. So each team is a group and each row is ONE users information. The users can update all 25 rows or just one row at a time. I require storing things into cache because the site is very slow doing over 1,000 queries almost every minute. So here is the deal. Imagine I have an excel spreadsheet with 100 columns and 5000 rows. Each row has two unique identifiers. One for the row it self and one to group together 25 rows a piece. There are about 10 columns in the row that will almost never change and the other 90 columns will always be changing. We can say some will even change in a matter of seconds depending on how fast the row is updated. Rows can also be added and deleted from the group, but not from the database. The rows are taken from about 4 queries from the database to show the most recent and updated data from the database. So every time something in the database is updated, I would also like the row to be updated. If a row or a group has not been updated in 12 or so hours, it will be taken out of Cache. Once the user calls the group again via the DB queries. They will be placed into Cache. The above is what I would like. That is the wish. In Reality, I still have all the rows, but the way I store them in Cache is currently broken. I store each row in a class and the class is stored in the Server Cache via a HUGE list. When I go to update/Delete/Insert items in the list or rows, most the time it works, but sometimes it throws errors because the cache has changed. I want to be able to lock down the cache like the database throws a lock on a row more or less. I have DateTime stamps to remove things after 12 hours, but this almost always breaks because other users are updating the same 25 rows in the group or just the cache has changed. This is an example of how I add items to Cache, this one shows I only pull the 10 or so columns that very rarely change. This example all removes rows not updated after 12 hours: DateTime dt = DateTime.UtcNow; if (HttpContext.Current.Cache["GetRows"] != null) { List<RowIdentifiers> pis = (List<RowIdentifiers>)HttpContext.Current.Cache["GetRows"]; var ch = (from xx in pis where xx.groupID == groupID where xx.rowID== rowID select xx).ToList(); if (ch.Count() == 0) { var ck = GetInGroupNotCached(rowID, groupID, dt); //Pulling the group from the DB for (int i = 0; i < ck.Count(); i++) pis.Add(ck[i]); pis.RemoveAll((x) => x.updateDateTime < dt.AddHours(-12)); HttpContext.Current.Cache["GetRows"] = pis; return ck; } else return ch; } else { var pis = GetInGroupNotCached(rowID, groupID, dt);//Pulling the group from the DB HttpContext.Current.Cache["GetRows"] = pis; return pis; } On the last point, I remove items from the cache, so the cache doesn't actually get huge. To re-post the question, Whats a better way of doing this? Maybe and how to put locks on the cache? Can I get better than this? I just want it to stop breaking when removing or adding rows.

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  • Question about ASP.NET MVC and static data (ie. images, scripts, etc)

    - by Pure.Krome
    Hi folks, If i have a request for a resource in my ASP.NET MVC1 (or 2) web app for a static resource, say ... an image or a javascript file or a css file ... does the .NET framework try and see if the request matches the route list ... and eventually can't find a controller for it? eg. Resource: /Content/Images/Foo.png Does this request go through my route list .. fails to match any controllers / actions to this request and then .. i donno ... attempt that path directly?

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  • Get application names with specific permission

    - by rolling.stones
    I want list of all applications installed on the device which use a specific permission like INTERNET. i am using this code , but not able to retrieve results , please help . private ArrayList<String> getInstalledApps(Context context) { ArrayList<String> results = new ArrayList<String>(); PackageManager packageManager = context.getPackageManager(); List<PackageInfo> applist = packageManager.getInstalledPackages(0); Iterator<PackageInfo> it = applist.iterator(); while (it.hasNext()) { PackageInfo pk = (PackageInfo) it.next(); if (PackageManager.PERMISSION_GRANTED == packageManager.checkPermission(Manifest.permission.INTERNET, pk.packageName)) results.add("" + pk.applicationInfo.loadLabel(packageManager)); } for (int i = 0; i <= results.size(); i++) { Log.v("app using internet = ", results.toString()); } return results; } Thanks in advance. Any help accepted :)

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  • haskell sorting

    - by snorlaks
    Hello, How can it be done in most simply way to write (or maybe there is something embedded in haskell) function which takse as arguments list of tuples (String, Int) and Int x and return top x tuples as list according to x value. I wonder if its possible to write a function which also takes 3 argument which is the name of (or index) of filed in tuple according to which sorting has to be done. What are best solutions to make it quite generic, Im new to haskell I would do somethink like that in imperative languages without any problems but I want to know how to write it in quite good way in haskell, thanks for help

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  • What are good uses for Python3's "Function Annotations"

    - by agscala
    Function Annotations: PEP-3107 I ran across a snippet of code demonstrating Python3's function annotations. The concept is simple but I can't think of why these were implemented in Python3 or any good uses for them. Perhaps SO can enlighten me? How it works: def foo(a: 'x', b: 5 + 6, c: list) -> max(2, 9): ... function body ... Everything following the colon after an argument is an 'annotation', and the information following the -> is an annotation for the function's return value. foo.func_annotations would return a dictionary: {'a': 'x', 'b': 11, 'c': list, 'return': 9} What's the significance of having this available?

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  • Can I use a string variable to reference a class variable?

    - by rson
    Here's the scenario: I have an external swf file with x number of movieclips in its library that I load into a containing swf. Each MC in the external swf is linked with a class name and referenced on frame 1 as such var unique1:lineSequence1 = new lineSequence1(); the unique1 variable name will match a string variable I create in the containing swf: function initLines():void{ lineLoader = new Loader(); lineLoader.load(new URLRequest("theLines.swf")); //load external swf lineLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, linesLoaded); } function linesLoaded(e:Event):void{ var loadedswf:MovieClip = e.target.content as MovieClip; var initialLines = projects[0].pageid; //projects is an xmllist trace("initialLines: "+initialLines); //returns "initialLines: unique1" lines_holder_mc.addChild(loadedswf.[initialLines]); } I would like to use the initialLines variable as the reference to unique1 instead of hardcoding unique1 into loadedswf.unique1 to reference said variable in the loaded swf.

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  • How do a search a table for similar records and displaying count - Ruby on Rails

    - by bgadoci
    I have created a table in my Ruby on Rails application that I am building called Tags. It is a blog application so I allow the user to associate tags with a post and do this through a :posts, :has_many = tags and Tag belongs_to :post association. Now that I have my Tags table I am trying to see how I would render the view such that it displays the tag and tag count. (it should be noted that I am trying to render this in the /views/posts/index.html.erb file). For instance, if there are 10 entries in the Tag table for tag_name Sports. How can I display Sports (10) in the view. I am not looking to do this for a specific tag but rather, somehow search the table, combine like tags and display a list of all tags with counts next to them. (I really want these to be a link to a list of posts that contain that tag but I learned early on only to ask one question at a time). Hope that makes sense.

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  • Is there a difference between `==` and `is` in python?

    - by Bernard
    My Google-fu has failed me. In Python, are these: n = 5 # Test one. if n == 5: print 'Yay!' # Test two. if n is 5: print 'Yay!' two tests for equality equivalent (ha!)? Does this hold true for objects where you would be comparing instances (a list say)? Okay, so this kind of answers my question: l = list() l.append(1) if l == [1]: print 'Yay!' # Holds true, but... if l is [1]: print 'Yay!' # Doesn't. So == tests value where is tests to see if they are the same object?

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  • Sorting 1 million 8-digit numbers in 1MB of RAM

    - by Favourite Chigozie Onwuemene
    I have a computer with 1M of RAM and no other local storage. I must use it to accept 1 million 8-digit decimal numbers over a TCP connection, sort them, and then send the sorted list out over another TCP connection. The list of numbers may contain duplicates, which I must not discard. The code will be placed in ROM, so I need not subtract the size of my code from the 1M. I already have code to drive the ethernet port and handle TCP/IP connections, and it requires 2k for its state data, including a 1k buffer via which the code will read and write data. Is there a solution to this problem?

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  • Could not find any resources appropriate for the specified culture or the neutral culture.

    - by Captain Comic
    I have created an assembly and later renamed it. Then i started getting runtime errors when calling toolsMenuName = resourceManager.GetString(resourceName); The resourceName variable is "enTools" at runtime. Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "Jfc.TFSAddIn.CommandBar.resources" was correctly embedded or linked into assembly "Jfc.TFSAddIn" at compile time, or that all the satellite assemblies required are loadable and fully signed. The code: string resourceName; ResourceManager resourceManager = new ResourceManager("Jfc.TFSAddIn.CommandBar", Assembly.GetExecutingAssembly()); CultureInfo cultureInfo = new CultureInfo(_applicationObject.LocaleID); if(cultureInfo.TwoLetterISOLanguageName == "zh") { System.Globalization.CultureInfo parentCultureInfo = cultureInfo.Parent; resourceName = String.Concat(parentCultureInfo.Name, "Tools"); } else { resourceName = String.Concat(cultureInfo.TwoLetterISOLanguageName, "Tools"); } // EXCEPTION IS HERE toolsMenuName = resourceManager.GetString(resourceName); I can see the file CommandBar.resx included in the project, i can open it and can see the "enTools" string there.

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  • Is there a .def file equicalent on Linux for controlling exported function names in a shared library

    - by morpheous
    I am building a shared library on Ubuntu 9.10. I want to export only a subset of my functions from the library. On the Windows platform, this would be done using a module definition ( .def) file which would contain a list of the external and internal names of the functions exported from the library. I have the following questions: How can I restrict the exported functions of a shared library to those I want (i.e. a .def file equivalent) Using .def files as an example, you can give a function an external name that is different from its internal name (useful for prevent name collisions and also redecorating mangled names etc) On windows I can use the EXPORT command (IIRC) to check the list of exported functions and addresses, what is the equivalent way to do this on Linux?

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  • Deserializing different named xml nodes

    - by Andreas
    Hi. Is there a way to convert different named xml nodes into one class when deserializing an XML Example XML: <items> <aaa>value</aaa> <bbb>value</bbb> </items> Normaly i would write: [XmlRoot("items")] class Items { [XmlElement("aaa")] public string aaa; [XmlElement("bbb")] public string bbb; } But now i would like to do something like this [XmlRoot("items")] class Items { [XmlElement("aaa")] [XmlElement("bbb")] public List<string> item; } Here I would love if "aaa" and "bbb" was added to the same list.

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  • C++ Virtual keyword as away to avoid including code units.

    - by user394663
    Currently we have a body of code that allows service plugins which offer forms of communication to the core e.g tcp/ip, udp/ip, usb, etc... These service plugins feedback notifier class instances to the core for further processing. In the current implementation a service project (which is a separate dynamically linked library brought in at runtime by the core via dlopen and friends) will compile against the notifier.cpp file that resides in the core source code (a separate project). This gives access to the notifiers method implementations. This works perfectly no complaints. Two alternative options: 1. put the notifier method implementations in the header file. 2. declare the notifier methods virtual and delay binding until runtime. Avoiding the issues of computational overhead what are the impacts of option 2? Are there any other options available to us? Thanks

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  • Class architecture, no friends allowed

    - by Captain Comic
    The question of why there are no friends in C# has been extensively discussed. I have the following design problems. I have a class that has only one public function AddOrder(Order ord). Clients are allowed to call only this function. All other logic must be hidden. Order class is listening to market events and must call other other function of TradingSystem ExecuteOrder, so I have to make it public as well. Doing that I will allow clients of Trading system to call this function and I don't want that. class TradingSystem { // Trading system stores list of orders List<Order> _orders; // this function is made public so that Order can call ir public ExecuteOrder(Order ord) { } // this function is made public for external clients public AddOrder(OrderRequest ordreq) { // create order and pass it this order.OnOrderAdded(this); } } class Order { TradingSystem _ts; public void OnOrderAdded(TradingSystem ts) { _ts = ts; } void OnMarketEvent() { _ts.ExecuteOrder() } }

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