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  • Call function in query in Entity framework 3.5

    - by Ashwani K
    Hello All: I am trying to run following query in entity framework 3.5 var test = from e in customers where IsValid(e) select e; Here IsValid function takes current customer and validate against some conditions and returns false or true. But when I am trying to run the query it is giving error "LINQ Method cannot be translated into a store expression." Can any body tell me any other approach? One approach I can think of is to write all validation conditions here, but that will make the code difficult to read. Thanks Ashwani

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  • Invoicing vs Quoting or Estimating

    - by FreshCode
    If invoices can be voided, should they be used as quotations? I have an Invoices tables that is created from inventory associated with a Job or Order. I could have a Quotes table as a halfway-house between inventory and invoices, but it feels like I would have duplicate data structures and logic just to handle an "Is this a quote?" bit. From a business perspective, quotes are different from invoices: a quote is sent prior to an undertaking and an invoice is sent once it is complete and payment is due, but how to represent this in my repository and model. What is an elegant way to store and manage quotes & invoices in a database? Edit: indicated Job === Order for this particular instance.

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  • How to format a string as a telephone number in C#

    - by Brian G
    I have a string "1112224444' it is a telephone number. I want to format as 111-222-4444 before I store it in a file. It is on a datarecord and I would prefer to be able to do this without assigning a new variable. I was thinking: String.Format("{0:###-###-####}", i["MyPhone"].ToString() ); but that does not seem to do the trick. ** UPDATE ** Ok. I went with this solution Convert.ToInt64(i["Customer Phone"]).ToString("###-###-#### ####") Now its gets messed up when the extension is less than 4 digits. It will fill in the numbers from the right. so 1112224444 333 becomes 11-221-244 3334 Any ideas?

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  • Prevent strings stored in memory from being read by other programs

    - by Roy
    Some programs like ProcessExplorer are able to read strings in memory (for example, my error message written in the code could be displayed easily, even though it is compiled already). Imagine if I have a password string "123456" allocated sequentially in memory. What if hackers are able to get hold of the password typed by the user? Is there anyway to prevent strings from being seen so clearly? Oh yes, also, if I hash the password and sent it from client to server to compare the stored database hash value, won't the hacker be able to store the same hash and replay it to gain access to the user account? Is there anyway to prevent replaying? Thank You!

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  • How to Track Number of Changes Occured in a Column? T-SQL - SQL Server

    - by user327387
    For example, i have a column named EmployeeName. Every time a user changes/fix his name, i need to keep a count. If he changes his name twice, then count is 2. Also, i need to store the time of every change employee makes on EmployeeName e.g. if the name essentially is James and time created is 9:00 AM and then employee changes to John on 11:00 AM, i need to preserve this new time and new value as well as the previous one which is James at 9:00 AM. I hope its clear! Thank you guys...Best Answer will be chosen... If this requires a trigger, giving a sketchy pseudo-code will be very much appreciated.

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  • How to read ident from an ini file?

    - by user367856
    i have store a list of items from gridView into registry as below: * frmPOSConfigSet.tblCatItems.First; while not frmPOSConfigSet.tblCatItems.Eof do begin RegItemSetting.WriteString('stk Group\Candy', frmPOSConfigSet.tblCatItemsCODE.Text, frmPOSConfigSet.tblCatItemsSPHOTO.Text); frmPOSConfigSet.tblCatItems.Next; end; * [In Registry Editor] stk Group - Candy - YUPI_GUM_HB , c:\Users\chai\Pictures\POS Item Images\image1.jpg - YUPI_GUM_SBKISS , c:\Users\chai\Pictures\POS Item Images\image2.jpg After i close the form and open again, all values in gridView is gone, how do i retrieve the ident (eg. YUPI_GUM_HB) and it's value (eg.c:\Users\chai\Pictures\POS Item Images\image1.jpg) from registry to the gridView when load the form?

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  • How to "serialize" and "deserialize" command line arguments to string in bash?

    - by Vi
    I call my script: $ ./script 'a!#*`*& ^$' "sdf sdf\"qw sdsdf" 1 -- 2 3 It gets arguments: 1: a!#*`*& ^$ 2: sdf sdf"qw sdsdf 3: 1 4: -- 5: 2 6: 3 If I need to call something with the same arguments locally, I do this: someprogram "$@" But how can I put all that array to a string (to store in file or in environment variable or pass over TCP eaisly) and then turn it back to command line arguments somewhere? I want it to be simple, short and secure. export CMDLINE="$@" # What is in CMDLINE now? Escaped or not? sh -c "someprogram $CMDLINE" # Will it do what I mean? Ideally I want two bash subroutines: the first turns turns any Bash array into a [a-zA-Z0-9_]* string, the other turns it back to Bash array I can use.

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  • Storing users in a database

    - by EMcKenna
    Im wondering whats the best way of storing different types of users in my database. I am writing an application that has 4 main user types (admin, school, teacher, student). At the moment I have a table for each of these but i'm not sure thats the best way of storing user information. For instance... Allowing students to PM other student is simple (store sender and receiver student_id) but enabling teachers to PM students requires another table (sender teacher_id, sender student_id). Should all users be stored in one users table with a user_type field? If so, the teacher / student specific information will still have to be stored in another table. users user_id, password_hash, user_type students user_id, student_specific_stuff... teachers user_id, teacher_specific_stuff... How do I stop a user who has a user_type = student from being accidentally being entered into the teachers table (as both have a user_id) Just want to make sure I get the database correct before i go any further. Thanks...

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  • Selecting an area from displayed image using CImg library

    - by sravan
    hi all, i use CImg for my image processing work. I had written a small piece of code which is follows: #include "../CImg.h" #include <iostream> using namespace std; using namespace cimg_library; int main(int argc,char**argv) { CImg<int> img(argv[1]); CImgDisplay disp; disp.assign(img); while(!disp.is_closed) disp.wait(); return 0; } Now i want to select an area from the displayed image. Can some one tell me how to select an area from displayed image and store the selected pixels, and display the selected region in different display window. If some one can provide code, it will be of great help to me. Thank you all

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  • Logical python question - handeling directories and files in them

    - by Konstantin
    Hello! I'm using this function to extract files from .zip archive and store it on the server: def unzip_file_into_dir(file, dir): import sys, zipfile, os, os.path os.makedirs(dir, 0777) zfobj = zipfile.ZipFile(file) for name in zfobj.namelist(): if name.endswith('/'): os.mkdir(os.path.join(dir, name)) else: outfile = open(os.path.join(dir, name), 'wb') outfile.write(zfobj.read(name)) outfile.close() And the usage: unzip_file_into_dir('/var/zips/somearchive.zip', '/var/www/extracted_zip') somearchive.zip have this structure: somearchive.zip 1.jpeg 2.jpeg another.jpeg or, somethimes, this one: somearchive.zip somedir/ 1.jpeg 2.jpeg another.jpeg Question is: how do I modify my function, so that my extracted_zip catalog would always contain just images, not images in another subdirectory, even if images are stored in somedir inside an archive.

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  • C# listbox,params

    - by Oyeme
    As Andrew Hare suggested in his answer: Create a field to store all the ListBox instances and then change the constructor to accept an arbitrary number of them: by I tried the following class scaner { readonly IEnumerable<ListBox> listBoxes; public IEnumerable<ListBox> ListBoxes { get { return this.listBoxes; } } public scaner(params ListBox[] listBoxes) { this.listBoxes = listBoxes; } } This will allow you to do this: scaner Comp = new scaner(listBox1, listBox2); How can i access listbox1? In class scaner i'm trying to call this.listBoxes. (I need to call the listbox1 in scaner class.How can i do/call it? Thanks for answers.

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  • Access Profile Provider property values in ASPX files

    - by AsM
    We have several companies using one web application. Companies may decide to display different values in Labels. e.g. CompanyA - ZipCodeCaption = "Zip Code" CompanyB - ZipCodeCaption = "Pin Code" CompanyA - USDSymbolCaption = "USD" CompanyB - USDSymbolCaption = "$" We are using profile provider to store each company's settings. We would like to access these profile values in ASPX to assign values to Label's text properties just like Web Config app settings are accessed in aspx. e.g. " Is this possible? Is there a better way to go about doing this?

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  • Embarrassingly parallel workflow creates too many output files

    - by Hooked
    On a Linux cluster I run many (N > 10^6) independent computations. Each computation takes only a few minutes and the output is a handful of lines. When N was small I was able to store each result in a separate file to be parsed later. With large N however, I find that I am wasting storage space (for the file creation) and simple commands like ls require extra care due to internal limits of bash: -bash: /bin/ls: Argument list too long. Each computation is required to run through a qsub scheduling algorithm so I am unable to create a master program which simply aggregates the output data to a single file. The simple solution of appending to a single fails when two programs finish at the same time and interleave their output. I have no admin access to the cluster, so installing a system-wide database is not an option. How can I collate the output data from embarrassingly parallel computation before it gets unmanageable?

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  • how do i use MySql ENUM type? (and is it right for a news feed)

    - by Haroldo
    I'm creating a table called news_feed, this will log all the actions a user performs. Lets say I want to store user1234 deleted article412 at midday I then need a table like so timestamp | user_id | subject_type | subject_id | method . there would be 5 potential methods to log, methods = add/edit/delete/update/report and lets say 2 possible subject_type subjects = article/comment I know i could make my own key where 0=add, 1=delete etc etc but this would make my queries cumbersome to use/write as i'd need to keep consulting the key. Is there a MySql type which can read lots of identially values quickly? is this ENUM? how do i use it?!!

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  • compute mean in python for a generator

    - by nmaxwell
    Hi, I'm doing some statistics work, I have a (large) collection of random numbers to compute the mean of, I'd like to work with generators, because I just need to compute the mean, so I don't need to store the numbers. The problem is that numpy.mean breaks if you pass it a generator. I can write a simple function to do what I want, but I'm wondering if there's a proper, built-in way to do this? It would be nice if I could say "sum(values)/len(values)", but len doesn't work for genetators, and sum already consumed values. here's an example: import numpy def my_mean(values): n = 0 Sum = 0.0 try: while True: Sum += next(values) n += 1 except StopIteration: pass return float(Sum)/n X = [k for k in range(1,7)] Y = (k for k in range(1,7)) print numpy.mean(X) print my_mean(Y) these both give the same, correct, answer, buy my_mean doesn't work for lists, and numpy.mean doesn't work for generators. I really like the idea of working with generators, but details like this seem to spoil things. thanks for any help -nick

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  • How to save the content of Textbox into a textfile

    - by Owais Wani
    I have a textbox which has some content. I also have a button (SAVE) which shud open the FileSaveDialog and allow the content to be saved in a .txt file. XAML: <TextBox Height="93" IsReadOnly="True" Text="{Binding Path=ReadMessage, Mode=TwoWay}" Name="MessageRead" /> <Button Content="Save" Command="{Binding Path=SaveFileCommand}" Name="I2CSaveBtn" /> ViewModel: private string _readMessage = string.Empty; public string ReadMessage { get { return _readMessage; } set { _readMessage = value; NotifyPropertyChanged("ReadMessage"); } } public static RelayCommand SaveFileCommand { get; set; } private void RegisterCommands() { SaveFileCommand = new RelayCommand(param => this.ExecuteSaveFileDialog()); } private void ExecuteSaveFileDialog() { //What To Do HERE??? } What I basically need is to read the content of textbox, open a file save dialog and store it in a text file to be saved in my system.

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  • g_tree_insert overwrites all data

    - by pechenie
    I wonder how I should use the GTree (from GLib) to store data? Every new value I insert into GTree with g_tree_insert routine is overwrite the previous one! GTree *tree; //init tree = g_tree_new( g_str_equal ); //"g_str_equal" is a GLib default compare func //... for( i = 0; i < 100; ++i ) g_tree_insert( tree, random_key(), random_value() ); //insert some random vals // printf( "%d", g_tree_nnodes( tree ) ); //should be 100? NO! Prints "1"!!! What am I doing wrong? Thank you.

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  • How to deploy jar artifacts directly from a maven repository to appserver specific directories

    - by Joshua
    I have JDBC driver dependencies (e.g. h2, mysql ..) which have to be copied under ${jboss.home}/common/lib before it is used by my EAR application. What would be the best way to directly copy from a maven repository into the above location instead of doing a manual copy. I would not prefer to store copies of the drivers as part of my SVN. Note: I currently specify this as a maven dependency and copy this artifact from the local repository, not sure if this is the best way to do solve this.

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  • Bitfield With 3 States...?

    - by TheCloudlessSky
    I'm trying to create an authorization scheme for my ASP.NET MVC application where an Enum is used to set permissions. For example: [Flags] enum Permissions { ReadAppointments = 1, WriteAppointments = 2 | ReadAppointments, ReadPatients = 4, WritePatients = 8 | ReadPatients, ReadInvoices = 16, WriteInvoices = 32 | ReadInvoices ... } But I don't really like that because it really doesn't make it clear that Write always includes Read. I then realized that a requirement would be that a user might have NO access to, for example, Appointments. Essentially, I'd want a "bitfield" with 3 states: none, readonly, full (read/write). I'd like to still use an enum bitfield since it's easy to store in a DB (as an int). Also it's very easy to see if a permission is set. Does anyone have any idea how this could be easily accomplished using an Enum... or am I going in the completely wrong direction?

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  • how do i supply data to my gwt tree

    - by molleman
    Hello, So i need to create a tree with tree items for my gwt project. i am using the composite pattern to store all the information i need to be placed within a tree. A User has a root Folder that extends Hierarchy, this root Folder then has a list of Hierarchy objects, that can be FileLocations or Folders. Trouble i am having is building my tree based on this pattern. this data is all stored using hibernate in a mysql database How would i be able to implement this as a tree in gwt. Also the tree item that i create would have to reference back to the object so i can rename or move it.

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  • Get only new RSS entries with PHP Script ?

    - by ArneRie
    What im trying to do: Fetch X numbers of RSS Feeds from my Blogs and echo only new entries. My Problem is, how to know wich items are already parsed? Solution so far: Fetch the Feed every 5 hours, store all titles inside an Database table or flat file. Next run check if the title is already in database if not print it and save it inside the database. But iam not sure if this is best practise to do this? If someone knows a fast way, it would be great. Sorry for my poor english.

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  • Setting an ASIHTTPRequest post to a SimpleHTTPServer Python server?

    - by Rob
    I am working on a project (that i will not be releasing to the app store - just for fun) that will upload an image via an HTTP Post request from my iPhone to a server that I have running the Python script SimpleHTTPServer. I have successfully used the ASIHTTP APIs in the past for text strings, but can't for the life of me figure out how to upload an image. I have tried all of the following: NSString *path = [[NSBundle mainBundle] pathForResource:@"Image" ofType:@".png"]; [request setFile:@"Image.png" forKey:@"file"]; [request setFile:path forKey:@"file"]; [request setFile:path withFileName:@"Image.png" andContentType:@"image/jpeg" forKey:@"file"]; [request setData:[UIImage imageNamed:@"Image.png"] withFileName:@"Image.png" andContentType:@"Image" forKey:@"file"]; Any thoughts on where i could be going wrong?

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  • how to use expressons as function parameters in powershell

    - by rmeador
    This is a very simple task in every language I have ever used, but I can't seem to figure it out in PowerShell. An example of what I'm talking about in C: abs(x + y) The expression x + y is evaluated, and the result passed to abs as the parameter... how do I do that in PowerShell? The only way I have figured out so far is to create a temporary variable to store the result of the expression, and pass that. PowerShell seems to have very strange grammar and parsing rules that are constantly catching me by surprise, just like this situation. Does anyone know of documentation or a tutorial that explains the basic underlying theory of the language? I can't believe these are all special cases, there must be some rhyme or reason that no tutorial I have yet read explains. And yes, I've read this question, and all of those tutorials are awful. I've pretty much been relegated to learning from existing code.

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  • Where are AnkhSVN CA certificates stored?

    - by Roger Lipscombe
    My Subversion repository is available over HTTPS. I've got a self-signed CA root certificate, and the server uses a certificate signed with that. The CA root certificate is stored in Trusted Root Certification Authorities, which means that (for example) Internet Explorer recognises it. AnkhSVN, on the other hand, reports "There are some problems with this server's certificate". So: what is AnkhSVN using as its certificate store? It doesn't appear to be the Windows one. And how do I put my CA root certificate in there?

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  • designing data structures for an address book in C program??

    - by osabri
    i want that the number of address book item is not known in advance, i am thinking to use linked list is it the right choice?? "the user can enter new person data, or print the data for a given name, the asking data need not be a name but also an address on a telephone number, the program prints the whole information about a person, print the content of the book in alphabetical order. Store some data in a file; retrieve it and safe it after modification Program should write a file to the disk and retrieve the file from it. Program should be called with arguments. i will use malloc but i don't know when and how? somebody did similar task or have an idea can help me plz

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