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  • Last in First out UDP structure in MatLab.

    - by D Zondervan
    I am using MatLabs UDP function in their instrument control toolbox to send data packets from one computer to another. The first computer is constantly updating data values and sending them to the other computer, and I want that computer to be able to query the first one for the most recent values whenever it needs them. However, the default implementation of the UDP send and receive in MatLab is a FIFO structure- the first packet I send is the first the other computer receives when they execute the "fscanf" function. I want the last packet I sent to be the one the fscanf function returns. Is this possible or do I need to use a different protocol?

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  • My hosting server giving memory allocation error

    - by Usman
    I have hosted my website on shared hosting linux server. As there are atmost 10-15 visitors come to my website daily but My wordpress website most of the times gives 500 Internal Server Error. I accessed my server Error Log following error is showing: [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:45 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:43 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:42 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:41 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:40 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:32 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:31 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:29 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php [Tue Dec 04 08:57:26 2012] [error] [client 117.205.74.227] (12)Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp for /home/grasphub/public_html/index.php Is my hosting service really bad. And any solution. Thanks in advance.

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  • Remove first element from $@ in bash

    - by Herms
    I'm writing a bash script that needs to loop over the arguments passed into the script. However, the first argument shouldn't be looped over, and instead needs to be checked before the loop. If I didn't have to remove that first element I could just do: for item in "$@" ; do #process item done I could modify the loop to check if it's in its first iteration and change the behavior, but that seems way too hackish. There's got to be a simple way to extract the first argument out and then loop over the rest, but I wasn't able to find it.

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  • LINQ Query Returning Multiple Copies Of First Result

    - by Mike G
    I'm trying to figure out why a simple query in LINQ is returning odd results. I have a view defined in the database. It basically brings together several other tables and does some data munging. It really isn't anything special except for the fact that it deals with a large data set and can be a bit slow. I want to query this view based on a long. Two sample queries below show different queries to this view. var la = Runtime.OmsEntityContext.Positions.Where(p => p.AccountNumber == 12345678).ToList(); var deDa = Runtime.OmsEntityContext.Positions.Where(p => p.AccountNumber == 12345678).Select(p => new { p.AccountNumber, p.SecurityNumber, p.CUSIP }).ToList(); The first one should hand back a List. The second one will be a list of anonymous objects. When I do these queries in entities framework the first one will hand me back a list of results where they're all exactly the same. The second query will hand me back data where the account number is the one that I queried and the other values differ. This seems to do this on a per account number basis, ie if I were to query for one account number or another all the Position objects for one account would have the same value (the first one in the list of Positions for that account) and the second account would have a set of Position objects that all had the same value (again, the first one in it's list of Position objects). I can write SQL that is in effect the same as either of the two EF queries. They both come back with results (say four) that show the correct data, one account number with different securities numbers. Why does this happen??? Is there something that I could be doing wrong so that if I had four results for the first query above that the first record's data also appears in the 2-4th's objects??? I cannot fathom what would/could be causing this. I've searched Google for all kinds of keywords and haven't seen anyone with this issue. We partial class out the Positions class for added functionality (smart object) and some smart properties. There are even some constructors that provide some view model type support. None of this is invoked in the request (I'm 99% sure of this). However, we do this same pattern all over the app. The only thing I can think of is that the mapping in the EDMX is screwy. Is there a way that this would happen if the "primary keys" in the EDMX were not in fact unique given the way the view is constructed? I'm thinking that the dev who imported this model into the EDMX let the designer auto select what would be unique. Any help would give a haggered dev some hope!

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  • Using css child selector

    - by David Thorisson
    I am trying to apply css on the first A element inside .Outer, .Outer > a:first-child {font-weight:bold} doesn't work. Why? <div class="Outer"> <img src='image123.jpg' /> <a href="Default.aspx?ID=4083" id="ctl00_CPH_Main_Rep_List2_ctl03_HyperLink1">John Johnsson</a> <a href="../Users/ViewList.aspx?module=Occupation&amp;ID=70">Doctor</a> <a href="../Workplaces/Default.aspx?ID=31">Mayo Clinica> </div>

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  • Can't save data for a member in a data form

    - by RahulS
    Implied sharing is an old thing everyone knows the reasons and solutions of that, still little theory about that: With Essbase implied sharing, some members are shared even if you do not explicitly set them as shared. These members are implied shared members. When an implied share relationship is created, each implied member assumes the other member’s value. Essbase assumes (or implies) a shared member relationship in these situations: 1. A parent has only one child 2. A parent has only one child that consolidates to the parent In a Planning form that contains members with an implied sharing relationship, when a value is added for the parent, the child assumes the same value after the form is saved. Likewise, if a value is added for the child, the parent usually assumes the same value after a form is saved.For example, when a calculation script or load rule populates an implied share member, the other implied share member assumes the value of the member populated by the calculation script or load rule. The last value calculated or imported takes precedence. The result is the same whether you refer to the parent or the child as a variable in a calculation script. For more information have a look at: http://docs.oracle.com/cd/E17236_01/epm.1112/hp_admin_11122/ch14s11.html Now the issue which we are going to talk about is We loose data on save even when the parent is dynamic calc and has a single child. A dynamic calc parent to a single child:  If we design the form with following selection: In the data form we will find parent below the member and this is by design whenever you make a selection using commands to select all the member below parent, always children will appear before the parent: Lets try to enter data, Save it Now, try to change the way we selected members Here we go: Now the question again why this behavior: 1. Data from Planning data form passes to Essbase row by row, 2. Because in data form the child member appears before the parent, 3. First, data goes to Essbase for child (SingleStoreChild), 4. Then when Planning passes the data for parent there was #Missing or No data,  5. Over writes the data to #missing. PS: As we know that dynamic calc members are calculated on the fly they are not allocated with any memory in the Essbase, here the parent was dynamic calc and it was pointing to same memory as child in the background, when Planning was passing data to Essbase for second row it has updated the child with missing data.(Little confusing, let me know if you need more explanation) 6. As one of the solutions just change the order of appearance of parent and child. Cheers..!!! Rahul S. https://www.facebook.com/pages/HyperionPlanning/117320818374228

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  • SUM of metric for normalized logical hierarchy

    - by Alex254
    Suppose there's a following table Table1, describing parent-child relationship and metric: Parent | Child | Metric (of a child) ------------------------------------ name0 | name1 | a name0 | name2 | b name1 | name3 | c name2 | name4 | d name2 | name5 | e name3 | name6 | f Characteristics: 1) Child always has 1 and only 1 parent; 2) Parent can have multiple children (name2 has name4 and name5 as children); 3) Number of levels in this "hierarchy" and number of children for any given parent are arbitrary and do not depend on each other; I need SQL request that will return result set with each name and a sum of metric of all its descendants down to the bottom level plus itself, so for this example table the result would be (look carefully at name1): Name | Metric ------------------ name1 | a + c + f name2 | b + d + e name3 | c + f name4 | d name5 | e name6 | f (name0 is irrelevant and can be excluded). It should be ANSI or Teradata SQL. I got as far as a recursive query that can return a SUM (metric) of all descendants of a given name: WITH RECURSIVE temp_table (Child, metric) AS ( SELECT root.Child, root.metric FROM table1 root WHERE root.Child = 'name1' UNION ALL SELECT indirect.Child, indirect.metric FROM temp_table direct, table1 indirect WHERE direct.Child = indirect.Parent) SELECT SUM(metric) FROM temp_table; Is there a way to turn this query into a function that takes name as an argument and returns this sum, so it can be called like this? SELECT Sum_Of_Descendants (Child) FROM Table1; Any suggestions about how to approach this from a different angle would be appreciated as well, because even if the above way is implementable, it will be of poor performance - there would be a lot of iterations of reading metrics (value f would be read 3 times in this example). Ideally, the query should read a metric of each name only once.

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  • First version of Linux

    - by dole doug
    Hi there I've heard many times that Linus Torvalds is a genius when it comes to writing good code. I also wish to write good code and I'd like to see how the first version of Linux was written. Does anyone know where I can find the first version of Linux? I'm looking for the first version (not 1.0) because I think it will be smaller and easier to understand. Many thanks.

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  • selecting the first of multiple classes

    - by gleddy
    Not sure if you can do this, but I want to select the first of two classes of an element with jQuery and return it's first class only. <div class="module blue"> I want to return 'module'. tried this: var state = $('body').attr('class').first(); but none of that seems to work, thanks for any advice.

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  • Why first arg to execve() must be path to executable

    - by EBM
    I understand that execve() and family require the first argument of its argument array to be the same as the executable that is also pointed to by its first argument. That is, in this: execve(prog, args, env); args[0] will usually be the same as prog. But I can't seem to find information as to why this is. I also understand that executables (er, at least shell scripts) always have their calling path as the first argument when running, but I would think that the shell would do the work to put it there, and execve() would just call the executable using the path given in its first argument ("prog" from above), then passing the argument array ("args" from above) as one would on the command line.... i.e., I don't call scripts on the command line with a duplicate executable path in the args list.... /bin/ls /bin/ls /home/john Can someone explain?

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  • Regular expression to retrieve everything before first slash

    - by alex
    I need a regular expression to basically get the first part of a string, before the first slash (). For example in the following: C:\MyFolder\MyFile.zip The part I need is "C:" Another example: somebucketname\MyFolder\MyFile.zip I would need "somebucketname" I also need a regular expression to retrieve the "right hand" part of it, so everything after the first slash (excluding the slash.) For example somebucketname\MyFolder\MyFile.zip would return MyFolder\MyFile.zip.

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  • How to select and hide all but first 5 elements in a HTML file (DOM)

    - by Zhen
    I am attempting to use coffeescript/jQuery to do the following: 1) Retrieve all the 'topics' displayed in the html (seen below) 2) Hide all the topics from display except for the first 5 listed. I tried to do the following but is not working //Retrieve the entire list of and hide all but the first 5 topics in the list $(".topics .topic")[5..-1].hide() Can someone advise me on how I can correctly retrieve the list of topics from the HTML document and subsequently hide ALL but the first 5 topics?

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  • First Year Computer Science Programming Languages

    - by Jon
    I was reading this article earlier regarding C/C#/PHP being dropped as first languages in Advanced Level (pre-university) Computer Science courses: http://www.theregister.co.uk/2010/05/12/aqa_c_php/ It also goes on to say: Teachers planning to use Java are warned that many universities are considering dropping it from their first year computer science programmes, "as has happened n the US". Does anybody know, what the language predominantly used in US first year Comp Science programs is currently?

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  • Getting child elements that are related to a parent in same table

    - by Madawar
    I have the following database schema class posts(Base): __tablename__ = 'xposts' id = Column(Integer, primary_key=True) class Comments(Base): __tablename__ = 'comments' id = Column(Integer, primary_key=True) comment_parent_id=Column(Integer,unique=True) #comment_id fetches comment of a comment ie the comment_parent_id comment_id=Column(Integer,default=None) comment_text=Column(String(200)) Values in database are 1 12 NULL Hello First comment 2 NULL 12 First Sub comment I want to fetch all Comments and sub comments of a post using sqlalchemy and have this so far qry=session.query(Comments).filter(Comments.comment_parent_id!=None) print qry.count() Is there a way i can fetch the all the subcomments of a comment in a query i have tried outerjoin on the same table(comments) and it seemed stupid and it failed.

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  • Generic List .First not working LINQ

    - by Hurricanepkt
    var stuff = ctx.spReport(); var StuffAssembled = new List<ReportCLS>(); var val = new List<ReportCLS>(); foreach (var item in stuff) { StuffAssembled.Add(new ReportCLS(item)); } val.Add(StuffAssembled.First()); Keeps throwing System.Collections.Generic.List' does not contain a definition for 'First' and no extension method 'First' accepting a first argument of type 'System.Collections.Generic.List' could be found (are you missing a using directive or an assembly reference?) what is going wrong ? moreover how do i fix it? Thanks

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  • JqueryUI serialize data not working on first record

    - by peace
    I am using jqueryUI v1.8. I have created a modal dialog form to edit records of a table. When the edit link on the record is clicked the record data is displayed on the form and the user edits the record. When the user submits this form the data is serialized and posted via ajax to update the database. This works well with all records except the first one. Nothing is posted to server for update only for the first record. alert(serializeddata); is empty. Similarly, The first form element in every record chosen for editing does not show the actual value the first time. Once you cancel editing and close the dialog and reopen you can see the fields accurate data. How do I resolve this?

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  • C# as a very first language?

    - by I00I
    Is it possible to learn C# as your first computer language without any knowledge of the other three languages it combines? I learned objective-c without knowing c first, but assuming I know nothing of C# or any other language is it possible to learn as a first language?

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  • Convert a post-order binary tree traversal index to an level-order (breadth-first) index

    - by strfry
    Assuming a complete binary tree, each node can be adressed with the position it appears in a given tree traversal algorithm. For example, the node indices of a simple complete tree with height 3 would look like this: breadth first (aka level-order): 0 / \ 1 2 / \ / \ 3 4 5 6 post-order dept first: 6 / \ 2 5 / \ / \ 0 1 3 4 The height of the tree and an index in the post-order traversal is given. How can i calculate the breadth first index from this information?

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  • bind parent child listview asp.net

    - by Chris
    I'm trying to display two linq query results in a prent and child listview. I have the following code which gets the correct values to populate the listviews but when I nest the child listview inside the parent list view, I get an error saying "The name 'ListView2' does not exist in the current context". I presume I need to bind the two listviews in the code behind but my problem is I don't know how or the best way to do this. I have read a couple of posts on similar problems but my lack of knowledge on the subject doesn't make it clear to me. Please can somebody help me figure this out? It's the final piece of code I need to complete. Many thanks in advance. Here is my .aspx code: <asp:ListView ID="ListView1" runat="server"> <EmptyDataTemplate>No data was returned.</EmptyDataTemplate> <ItemSeparatorTemplate><br /></ItemSeparatorTemplate> <ItemTemplate> <li> <asp:Label ID="LabelID" runat="server" Text='<%# Eval("RecordID") %>'></asp:Label><br /> <asp:Label ID="LabelNumber" runat="server" Text='<%# Eval("CartID") %>'></asp:Label><br /> <asp:Label ID="LabelName" runat="server" Text='<%# Eval("Number") %>'></asp:Label><br /> <asp:Label ID="LabelDestination" runat="server" Text='<%# Eval("Destination") %>'></asp:Label><br /> <asp:Label ID="LabelPkgName" runat="server" Text='<%# Eval("PkgName") %>'></asp:Label> <li> <!-- LIST VIEW FOR FEATURES --> <asp:ListView ID="ListView2" runat="server"> <EmptyDataTemplate>No data was returned.</EmptyDataTemplate> <ItemSeparatorTemplate><br /></ItemSeparatorTemplate> <ItemTemplate> <li> <asp:Label ID="LabelFeatureName" runat="server" Text='<%# Eval("FeatureName") %>'></asp:Label><br /> <asp:Label ID="LabelFeatureSetUp" runat="server" Text='<%# Eval("FeatureSetUp") %>'></asp:Label><br /> <asp:Label ID="LabelFeatureMonthly" runat="server" Text='<%# Eval("FeatureMonthly") %>'></asp:Label><br /> </li> </ItemTemplate> <LayoutTemplate> <ul ID="itemPlaceholderContainer" runat="server" style=""> <li runat="server" id="itemPlaceholder" /> </ul> </LayoutTemplate> </asp:ListView> <!-- LIST VIEW FOR FEATURES [END] --> </li> </li> </ItemTemplate> <LayoutTemplate> <ul ID="itemPlaceholderContainer" runat="server" style=""> <li runat="server" id="itemPlaceholder" /> </ul> </LayoutTemplate> </asp:ListView> Here is my code behind: MyShoppingCart userShoppingCart = new MyShoppingCart(); string cartID = userShoppingCart.GetShoppingCartId(); using (ShoppingCartv2Entities db = new ShoppingCartv2Entities()) { var CartNumber = from c in db.NewViews where c.CartID == cartID select c; foreach (NewView item in CartNumber) { ListView1.DataSource = CartNumber; ListView1.DataBind(); } var CartFeature = from f in db.NewViews join o in db.NumberFeatureViews on f.RecordID equals o.RecordID where f.CartID == cartID select new { o.FeatureName, o.FeatureSetUp, o.FeatureMonthly }; foreach (var x in CartFeature) { ListView2.DataSource = CartFeature; ListView2.DataBind(); } }

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  • how can we achieve second application read that file when first application not modifying it

    - by soField
    i have two application first application is bash second is java which one of them is periodically deleting and recreating a specific file (first) the other one is also periodically reading this file and process it in it's own logic (second) how can we achieve second application read that file when first application not modifying it my aim is to force second app read the file only when content of file fully written inside it how can achieve this goal ?

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