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• other way to add item to List<>

  - by netmajor

  In my other question You can see code of my arr structure and PriorityQueue collection. I normally add items to this collection like that: arr.PriorityQueue.Add(new element((value(item, endPoint) + value(startPoint, item)),item)); I am curious that is other way to do this (add element(which is struct) object to List) ? In lambda way for example ? I just eager for knowledge :)

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• Live Folder: browser intent error

  - by MrSnowflake

  I'm trying to make a Live Folder with URIs. The intent I set to the Live Folder items is an Intent{Intent.ACTION_VIEW, Uri.parse(url)}. I have verified url is indeed http://www.google.com (for testing purposes). But when I click the item in the live folder I get an error message: "Application is not installed on your phone." I guess I'm missing something, but I have no idea how to make the browser launch.

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• Using PyLab to create a 2D graph from two separate lists

  - by user324333

  Hey Guys, This seems like a basic problem with an easy answer but I simply cannot figure it out no matter how much I try. I am trying to create a line graph based on two lists. For my x-axis, I want my list to be a set of strings. x_axis_list = ["Jan-06","Jul-06","Jan-07","Jul-07","Jan-08"] y_axis_list = [5,7,6,8,9] Any suggestions on how to best graph these items?

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• How do I bind to something outside a datacontext.

  - by AKRamkumar

  I have a listbox in WPF that is in the Layout Root. I also have a Frame that is in the Layout Root as well. The listbox is composed of items that have a string(Name) and a framework element(UI). How do I bind the frame's content to be the UI property of the listbox's selected item property? If you need a codebehind, how would you do this in MVVM

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• Copying files VS not copying files ?

  - by gotye

  Hey guys, Can someone explain to me what is the difference between ticking "copy items into destination..." and not ticking this option ? Thank you. Gotye.

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• How to style a treeview in Expression Blend

  - by RobDemo

  (Using Expression Blend 4 RC, Silverlight 3) I have a treeview with several different item templates for different levels. When I open this project in Blend, it seems I can only really style the top-most DataTemplate (via right-click the TreeView in the Objects/Timeline view, Edit Additional Templates-Edit Generated Items (ItemTemplate) - Edit Current). How do I drill down into the level I want and edit those templates? Rob

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• Synchronize app with pc

  - by jgauffin

  I've built an app/widget with ADT/Eclipse that I need to sync with a PC. It's my own data types, and not calendar/contact items. Is it possible at all? If so, how?

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• How to add a separator in a PyGTK combobox?

  - by mkotechno

  I'm using gtk.combo_box_new_text() to make combobox list, this uses a gtk.ListStore to store only strings, so there are some way to add a separator between items without use a complex gtk.TreeModel? If this is not possible, what is the simplest way to use a gtk.TreeModel to able secuential widget addition?

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• Powershell .CopyHere if it already exists work around

  - by Bruce227

  Hi, I run the following to unzip and want to over write the current files if they exist but the microsoft solution found here(http://msdn.microsoft.com/en-us/library/ms723207%28VS.85%29.aspx) doesn't seem to work. I haven't found anything that says it works so is there a work around to select the 'yes to all' option? $zipPackage = (new-object -com shell.application).NameSpace($zipfilename) $destinationFolder = (new-object -com shell.application).NameSpace($destination) $destinationFolder.CopyHere($zipPackage.Items(),16) Thanks

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• How can I obtain a list of modified files within a 'changeset' range from team foundation server thr

  - by Colin W

  I'm trying to create a tool which will help my team perform code reviews on a more regular basis without it's usual massive overhead. At the moment the manual process involves using Team Foundation Sidekicks to identify the Changesets and then exporting that to excel to filter the results to find which items need to be reviewed (e.g. code files). I've heard mention of using a TFS API, but found very little help online possibly because I was asking google 'the wrong questions'.

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• Is there a way to generate a short random id, avoiding collisions, without hitting persistent storag

  - by bshacklett

  If you've used GoToMeeting, that's the type of ID I want. I'd like it to be random so that it obfuscates the number of items being tracked and short, so that it's easy to reference manually; UUIDs are way too long. I'd like to avoid hitting persistent storage merely for performance reasons, but I can't think of any other way to avoid collisions. Is 9 digits enough to do something time-based?

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• How do I make and use a Queue in Objective-C?

  - by MrDatabase

  I want to use a queue data structure in my Objective-C program. In C++ I'd use the STL queue. What is the equivalent data structure in Objective-C? How do I push/pop items?

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• How to get selected listitem index in Qt

  - by Solitaire

  Hi all, I am having a QListView which having some items. Now i want to get the index of selected item. i.e. if i select 5th element i should get 5. How i can get this?.. waiting for reply. Thanks in advance -S

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• Queries with Multiple Constraints

  - by ANITHA

  I have the following tables and fields: +------------------+ +-------------------+ +---------------+ | Request | | RequestItem | | Item | +------------------+ +-------------------+ +---------------+ | + Requester_Name | | + Request_No | | + Item | +------------------+ +-------------------+ +---------------+ | + Request_No | | + Item | +------------------+ +-------------------+ I would like to filter the items which are selected under a particular request number, along with a specific requester name. How might I go about doing this?

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• jQuery : selector question (stylesheet class)

  - by Fuxi

  hi all, how can i select items with a classname that contains spaces? like <a href='button normal'> thx

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• how to combine combo box contents in vb.net

  - by user225269

  I have this, birthday selection which is in 3 combobox, 1 for month, 1 for day and 1 for year. But my database table has only this birthday attribute(no year, month or day). How can I combine the items that are selected in those 3 combo boxes so that they would be fitting in the birthday column?

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• alternatives to accessing google reader with oauth?

  - by Dustin Getz

  I'm really new to this oauth stuff. I want to access a user's google reader liked items feed. This blog says that oauth doesn't work (yet) with google reader. The working way seems to be to get the user's google credentials (email, password) directly, and login directly to google. This also gives me access to the rest of their services. Is there a better way, or must the user trust me with their google credentials?

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• Obtaining the min and max of a two-dimensional array using LINQ

  - by DanM

  How would you obtain the min and max of a two-dimensional array using LINQ? And to be clear, I mean the min/max of the all items in the array (not the min/max of a particular dimension). Or am I just going to have to loop through the old fashioned way?

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• How can I await the first completed async task of a list in .Net?

  - by Eyal

  My input is a long list of files located on an Amazon S3 server. I'd like to download the metadata of the files, compute the hashes of the local files, and compare the metadata hash with the local files' hash. Currently, I use a loop to start all the metadata downloads asynchronously, then as each completes, compute MD5 on the local file if needed and compare. Here's the code (just the relevant lines): Dim s3client As New AmazonS3Client(KeyId.Text, keySecret.Text) Dim responseTasks As New List(Of System.Tuple(Of ListViewItem, Task(Of GetObjectMetadataResponse))) For Each lvi As ListViewItem In lvStatus.Items Dim gomr As New Amazon.S3.Model.GetObjectMetadataRequest gomr.BucketName = S3FileDialog.GetBucketName(lvi.SubItems(2).Text) gomr.Key = S3FileDialog.GetPrefix(lvi.SubItems(2).Text) responseTasks.Add(New System.Tuple(Of ListViewItem, Task(Of GetObjectMetadataResponse))(lvi, s3client.GetObjectMetadataAsync(gomr))) Next For Each t As System.Tuple(Of ListViewItem, Task(Of GetObjectMetadataResponse)) In responseTasks Dim response As GetObjectMetadataResponse = Await t.Item2 If response.ETag.Trim(""""c) = MD5CalcFile(lvi.SubItems(1).Text) Then lvi.SubItems(3).Text = "Match" UpdateLvi(lvi) End If Next I've got two problems: I'm awaiting the reponses in the order that I made them. I'd rather process them in the order that they complete so that I get them faster. The MD5 calculation is long and synchronous. I tried making it async but the process locked up. I think that the MD5 task was added to the end of .Net's task list and it didn't get to run until all the downloads completed. Ideally, I process the response as they arrive, not in order, and the MD5 is asynchronous but gets a chance to run. Edit: Incorporating WhenAll, it looks like this now: Dim s3client As New Amazon.S3.AmazonS3Client(KeyId.Text, keySecret.Text) Dim responseTasks As New Dictionary(Of Task(Of GetObjectMetadataResponse), ListViewItem) For Each lvi As ListViewItem In lvStatus.Items Dim gomr As New Amazon.S3.Model.GetObjectMetadataRequest gomr.BucketName = S3FileDialog.GetBucketName(lvi.SubItems(2).Text) gomr.Key = S3FileDialog.GetPrefix(lvi.SubItems(2).Text) responseTasks.Add(s3client.GetObjectMetadataAsync(gomr), lvi) Next Dim startTime As DateTimeOffset = DateTimeOffset.Now Do While responseTasks.Count > 0 Dim currentTask As Task(Of GetObjectMetadataResponse) = Await Task.WhenAny(responseTasks.Keys) Dim response As GetObjectMetadataResponse = Await currentTask If response.ETag.Trim(""""c) = MD5CalcFile(lvi.SubItems(1).Text) Then lvi.SubItems(3).Text = "Match" UpdateLvi(lvi) End If Loop MsgBox((DateTimeOffset.Now - startTime).ToString) The UI locks up momentarily whenever MDSCalcFile is done. The whole loop takes about 45s and the first file's MD5 result happens within 1s of starting. If I change the line to: If response.ETag.Trim(""""c) = Await Task.Run(Function () MD5CalcFile(lvi.SubItems(1).Text)) Then The UI doesn't lock up when MD5CalcFile is done. The whole loop takes about 75s, up from 45s, and the first file's MD5 result happens after 40s of waiting.

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• Source Control - Distributed Systems vs. Non Distributed - What's the difference?

  - by Randy Minder

  I just read Spolsky's last piece about Distributed vs. Non-Distributed version control systems (http://www.joelonsoftware.com/items/2010/03/17.html). What's the difference between the two? Our company uses TFS. What camp does this fall in?

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• DShow : Enumeration sequence of IEnumMoniker

  - by KenC

  Hello, This is a question about DirectShow IEnumMoniker. Out of some reason, I have to know "what kind of order" IEnumMoniker enumerates items. (I mean, it's alphabetically or...?) The following pages are documents about IEnumMoniker, however, it doesn't mention about this : http://msdn.microsoft.com/en-us/library/ms692852(v=VS.85).aspx http://msdn.microsoft.com/en-us/library/dd407292%28VS.85%29.aspx If anybody has the idea about the enumeration sequence, please let me know. Thanks a lot.

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• What's FirstOrDefault for DateTime in Linq?

  - by Keltex

  If I have a query that returns a DateTime, what's the value of FirstOrDefault? Is there a generic way to get the default value of a C# scalar? Example: var list = (from item in db.Items where item.ID==1234 select item.StartDate).FirstOrDefault(); Edit: Assume that the column StartDate can't be null.

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• Best XML Parser for RSS Feeds in Objective C ?

  - by Ansari

  Hi all, I am going to develop an application which will parse the RSS feeds and display the items in my custom cell.(Cell containing the image, label, description, etc). The most popular way of parsing is using the NSXMLParser. But this is bit of a lengthy way. So is there any other way to do this. Or my question will be, which is the best xml parser for objective-c ?

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• Should we denormalize database to improve performance?

  - by Groo

  We have a requirement to store 500 measurements per second, coming from several devices. Each measurement consists of a timestamp, a quantity type, and several vector values. Right now there is 8 vector values per measurement, and we may consider this number to be constant for needs of our prototype project. We are using HNibernate. Tests are done in SQLite (disk file db, not in-memory), but production will probably be MsSQL. Our Measurement entity class is the one that holds a single measurement, and looks like this: public class Measurement { public virtual Guid Id { get; private set; } public virtual Device Device { get; private set; } public virtual Timestamp Timestamp { get; private set; } public virtual IList<VectorValue> Vectors { get; private set; } } Vector values are stored in a separate table, so that each of them references its parent measurement through a foreign key. We have done a couple of things to ensure that generated SQL is (reasonably) efficient: we are using Guid.Comb for generating IDs, we are flushing around 500 items in a single transaction, ADO.Net batch size is set to 100 (I think SQLIte does not support batch updates? But it might be useful later). The problem Right now we can insert 150-200 measurements per second (which is not fast enough, although this is SQLite we are talking about). Looking at the generated SQL, we can see that in a single transaction we insert (as expected): 1 timestamp 1 measurement 8 vector values which means that we are actually doing 10x more single table inserts: 1500-2000 per second. If we placed everything (all 8 vector values and the timestamp) into the measurement table (adding 9 dedicated columns), it seems that we could increase our insert speed up to 10 times. Switching to SQL server will improve performance, but we would like to know if there might be a way to avoid unnecessary performance costs related to the way database is organized right now. [Edit] With in-memory SQLite I get around 350 items/sec (3500 single table inserts), which I believe is about as good as it gets with NHibernate (taking this post for reference: http://ayende.com/Blog/archive/2009/08/22/nhibernate-perf-tricks.aspx). But I might as well switch to SQL server and stop assuming things, right? I will update my post as soon as I test it.

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• Repeating procedure for every item in class

  - by Hendriksen123

  Data.XX.NewValue := Data.XX.SavedValue; Data.XX.OldValue := Data.XX.SavedValue; I need to do the above a large number of times, where XX represents the value in the class. Pretending there were 3 items in the list: Tim, Bob, Steve. Is there any way to do the above for all three people without typing out the above code three times? (Data is a class containing a number of Objects, each type TList, which contain OldValue, NewValue and SavedValue)

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