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  • Waiting for a subset of threads in a Java ThreadPool

    - by David Semeria
    Let's say I have a thread pool containing X items, and a given task employs Y of these items (where Y is much smaller than X). I want to wait for all of the threads of a given task (Y items) to finish, not the entire thread pool. If the thread pool's execute() method returned a reference to the employed thread I could simply join() to each of these Y threads, but it doesn't. Does anyone know of an elegant way to accomplish this? Thanks.

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  • What is a good metaphor for c memory management?

    - by fsmc
    I'm trying to find a good metaphor to explain memory allocation, initialization and freeing in c to a non technical audience. I've heard pass-by-reference/value talked about quite well with postal service usage, but not so much for allocation/deallocation. So for I've thought about using the idea of renting a space might work, but I wonder if the SO crew can provide something better.

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  • Using RedirectToAction with custom type parameter

    - by user170497
    Hi asp.net mvc 2 I have this action in Identity controller public ActionResult Details(string id, MessageUi message) { And I'm trying to redirect to this action from another controller, but I don't know how should I pass the message parameter I was trying with var id = "someidvalue" var message = new MessageUi("somevalue"); return RedirectToAction("Details", "Identity", new { id, message}); } but message parameter is null

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  • How to get password html helper to render password on failed validation

    - by Max Schmeling
    I have a form for creating a new account and it has a password field in it. I'm using view models to pass data to the controller action and back to the form view. When the user enters their details in, and clicks submit, if validation fails and it returns them to the same view passing back in the view model, it won't default the password to what they entered. How can I get it to do this? Or should I even try?

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  • Can i Use the value of a variable from within a ruby script inside ssh.exec()

    - by kamal
    If i have a # {} , like #{results}, in the snippet below: results = Array.new                                   f = open("/Users/kahmed/messages", "r")                                   f.each_line do |line|                                        results << "#{$.} #{line}" if line =~ /NFE/                                       put #{results}                                   end How can i use it in the following ssh.exec command Net::SSH.start( HOST, USER, :password = PASS ) do|ssh|                                   ssh.exec(#{results})

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  • Passing data between blocks using sinatra

    - by Dan Galipo
    Hi All I'm trying to pass data between blocks using sinatra. For example: @data = Hash.new post "/" do @data[:test] = params.fetch("test").to_s redirect "/tmp" end get "/tmp" do puts @data[:test] end However whenever i get to the tmp block @data is nil and throws an error. Why is that?

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  • AbsoluteTime with an integer argument behaves strangely.

    - by dreeves
    This is strange: DateList@AbsoluteTime[596523] returns {2078, 7, 2, 2, 42, 9.7849} But DateList@AbsoluteTime[596524] returns {1942, 5, 26, 20, 28, 39.5596} The question: What's going on? Note that AbsoluteTime with an integer argument is undocumented. (I think I now know what it's doing but figured this is useful to have as a StackOverflow question for future reference; and I'm curious if there's some reason for that magic 596523 number.)

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  • Changing website favicon dynamically

    - by rwmnau
    I have a web application that's branded according to the user that's currently logged in. I'd like to change the favicon of the page to be the logo of the private label, but I'm unable to find any code or any examples of how to do this. Has anybody successfully done this before? I'm picturing having a dozen icons in a folder, and the reference to which favicon.ico file to use is just generated dynamically along with the HTML page. Thoughts?

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  • finding middle element of an array

    - by senthil
    Hi all, I came cross a question in my interview. Question: Array of integers will be given as the input and you should find out the middle element when sorted , but without sorting. For Example. Input: 1,3,5,4,2 Output: 3 When you sort the given input array, it will be 1,2,3,4,5 where middle element is 3. You should find this in one pass without sorting. Any solutions for this?

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  • C# : Attachment from byte array?

    - by JL
    I have a byte[] which is a file, and I would like to send it as an attachment using System.Net.Mail. I noticed the attachment class has 1 overload which accepts a stream. Attachment att = new Attachment(Stream contentStream,string name); Is it possible to pass the byte[] through this overload?

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  • asp.net mvc jquery hidden field

    - by mazhar
    the thing is that I have a form with a textbox and a button and a hidden field, now what i want to do is to write something in the textbox ,pass it to the hidden field and then access that thing written in the hidden field in the controller . how can i do that?

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  • calling main() in c++

    - by Supriyo
    Hello. I came across a program with 10 header and 10 source files. I read in my text book that the functions are called from main. But how can I pass data to so many functions from main()?

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  • session variable values are not being passed between pages

    - by ravi nankani
    hi, i am a little new to php and although i have managed to pass values of session variables before this piece of code is leaving me puzzled <form action="team_reg2.php" method="post" name="form1" class="cent" id="form1"> Team Registration "; print "member$i"; print "\n"; print "\n"; print "Please enter only id\n"; } ? now this will pass via post to team_reg2.php echo " please note your team id is 1 "; echo " your team members are : "; for($i=1;$i<=$num;$i++) { $name='mem'.$i; echo "$_POST[$name]"; } } else { $str="select * from $query where ("; for($i=1;$i<=$num;$i++) { $name='mem'.$i; $text="p_id='$_POST[$name]'"; if($i==1) $str=$str.$text; else $str=$str.' or '.$text; } $str=$str.')'; $query2=$str; echo "$str"; // echo "$query2"; $que=mysql_query($query2,$con) or die(mysql_error()); $num=mysql_num_rows($que); if($num!=0) { while($result=mysql_fetch_array($que)) { echo "$result[p_id] is already registered in team $result[t_id]"; } //include("reg_team.html"); } else if($num==0) { //echo $query; $query2="select max(t_id) from $query"; $que=mysql_query($query2,$con) or die(mysql_error()); //echo "$que"; $result=mysql_fetch_array($que); $max=$result['max(t_id)']; $max++; $num=$_SESSION['max_team']; for($i=1;$i<=$num;$i++) { $name='mem'.$i; if($_POST[$name]!="") { $query2="insert into $query values($max,'$_POST[$name]')"; $que=mysql_query($query2,$con); } } echo " please note your team id is $max "; echo " your team members are : "; for($i=1;$i<=$num;$i++) { $name='mem'.$i; echo "$_POST[$name]"; } } } ? i have done session_start(); at the beginning of the page itself. The problem is that echoing $_SESSION variables in second file is not printing anything. someone please explain me whats going on. thank you

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  • HtmlUnit click() behaves differently?

    - by rhcp2p
    Hi, A question regarding the HtmlUnit java libary: I've created a log on my server, and noticed that the click() method doesn't pass the "referral" information when it is invoked through a "HtmlElement" or "HtmlArea". when invoked through the more commonly used HtmlAnchor- the refferral information is passed. This is strange since HtmlAnchor is a Subclass of HtmlElement Thanks for the help

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  • problem with selector in iphone?

    - by abhiTouchmagic
    i am having a application where i am generating the uibuttons dynamically want to use same @selector...Now as sooon as event is generated i wanna check for values and pass it to thtroughthat selector how can i implement this code? can anyone tell me a tutorial sort where buttons are dynamically generated and check for particular button click is depicted? Plz help...

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  • Why can't i define recursive variable in code block?

    - by senia
    Why can't i define a variable recursively in a code block? scala> { | val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} | } <console>:9: error: forward reference extends over definition of value fibs val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} ^ scala> val fibs: Stream[Int] = 1 #:: fibs.scanLeft(1){_ + _} fibs: Stream[Int] = Stream(1, ?) lazy keyword solves this problem, but i can't understand why it works without a code block but throws a compilation error in a code block.

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  • Extended MAPI: How to get the entry ID of messages moved by CopyMessages

    - by marijne
    I have found that if I move a message using IMAPIFolder::CopyMessages (using the MESSAGE_MOVE flag) the message gets a new entry ID. However I do not see any reliable way of getting the entry ID of the message in its new location, or otherwise getting a reference to it. The best suggestion I have had so far involves tagging the message with the old custom property before moving, and then doing a search afterwards, but I was wondering if there is a less convoluted solution.

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  • Adding a wrapper to an overloaded function

    - by Cev
    Say you had a timestamp function and then wanted to create a new function to combine your timestamp and Console.WriteLine(), e.g. public static void Write(string msg) { WriteTimeStamp(); Console.WriteLine( msg ); } But the WriteLine() method has 18 or so overloads, which will not be reflected in the signature of the wrapper function. How would you have the wrapper take non-strings and pass them on to WriteLine()?

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  • PHP string parsing

    - by tmatthews
    I am trying to parse a list of operating system instances with their unique identifiers. I am looking for a solution to parse a text string, and pass the values into two variables. The string to be parsed is as followed: "Ubuntu 9.10" {40f2324d-a6b2-44e4-90c3-0c5fa82c987d}

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