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  • loading data from file into 2d array

    - by Chris
    I am just starting with perl and would like some help with arrays please. I am reading lines from a data file and splitting the line into fields: open (INFILE, $infile); do { my $linedata = <INFILE>; my @data= split ',',$linedata; .... } until eof; I then want to store the individual field values (in @data) in and array so that the array looks like the input data file ie, the first "row" of the array contains the first line of data from INFILE etc. Each line of data from the infile contains 4 values, x,y,z and w and once the data are all in the array, I have to pass the array into another program which reads the x,y,z,w and displays the w value on a screen at the point determined by the x,y,z value. I can not pas the data to the other program on a row-by-row basis as the program expects the data to in a 2d matrtix format. Any help greatly appreciated. Chris

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  • Make NSFormatter validate NSTextFieldCell continuously

    - by harms
    In Cocoa, I have an NSOutlineView where the cells are NSTextFieldCell. The cell displays values which are strings that are formatted according to certain rules (such as floats or pairs of floats with a space in between). I have made a custom NSFormatter to validate the text, and this seems to work with no problem. However, the cell (or the outline view, I'm unsure what is causing this) only seems to use the formatter at the moment my editing would end. If I type some alphabetic characters into the text field (which violates the formatting rules), these characters show up -- the only way I notice the formatter doing its job is that I'm now prevented from moving keyboard focus away from this cell. If I return the contents of the cell to a valid form, then I can move focus away. I have set both the cell and the outline view to be "continuous". It would be better if I was unable to enter text into the cell in the first place. Is it possible to make it like that, and if so, how?

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  • UDP checksum calculation

    - by Deepak Konidena
    Hi, The UDP header struct defined at /usr/include/netinet/udp.h is as follows struct udphdr { u_int16_t source; u_int16_t dest; u_int16_t len; u_int16_t check; }; What value is stored in the check field of the header? How to verify if the checksum is correct? I meant on what data is the checksum computed? (Is it just the udp header or udp header plus the payload that follows it?) Thanks.

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  • Filtering A MySQL Result Set Based On The Return Value Of A Function

    - by Joshua
    I'm a SQL noob, and I need a little bit of help understanding the big picture of if it is possible, and if so how to go about filtering a result set based on the return value of a function which is passed one of the fields of the record. Let's say I have a table called "Numbers" with just one field: "Value". How could I correctly specify the following "pseudo-sql"?: SELECT Value FROM numbers WHERE IsPrime(Value)=true Can I accomplish such a thing, and if so, where/how do I put/store "IsPrime"? I'm using MySQL.

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  • Rails show latest entry

    - by Danny McClelland
    Hi Everyone, I have a working Rails application on version 2.3.5 - I am using many to many model relations and have got almost everything working. What I would like to do is on my new kase page show the most recent kase job ref at the top. So for example, if I created a new kase with a job ref of "001", if I then went to create a new kase it would show at the top "Your previous kases reference was 001". I have the field of jobref in the new kase form, so I am trying to workout what I need to do to output only the last jobref. If that makes sense! Thanks, Danny

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  • How do I do this Database Model in Django?

    - by alex
    Django currently does not support the "Point" datatype in MySQL. That's why I created my own. class PointField(models.Field): def db_type(self): return 'Point' class Tag(models.Model): user = models.ForeignKey(User) utm = PointField() As you can see, this works, and syncdb creates the model fine. However, my current code calculates a length between two Points using raw SQL. cursor.execute("SELECT user_id FROM life_tag WHERE\ (GLength(LineStringFromWKB(LineString(asbinary(utm), asbinary(PointFromWKB(point(%s, %s)))))) < 55)... This says: Select where the length between the given point and the table point is less than 55. How can I do this with Django instead of RAW SQL? I don't want to do cursors and SELECT statements anymore. How can I modify the models.py in order to do this?

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  • Rails: Polymorphic User Table a good idea with AuthLogic?

    - by sscirrus
    Hi everyone, I have a system where I need to login three user types: customers, companies, and vendors from one login form on the home page. I have created one User table that works according to AuthLogic's example app at http://github.com/binarylogic/authlogic_example. I have added a field called "User Type" that currently contains either 'Customer', 'Company', or 'Vendor'. Note: each user type contains many disparate fields so I'm not sure if Single Table Inheritance is the best way to go (would welcome corrections if this conclusion is invalid). Is this a polymorphic association where each of the three types is 'tagged' with a User record? How should my models look so I have the right relationships between my User table and my user types Customer, Company, Vendor? Thanks very much!

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  • How to design this class hierarchy?

    - by devoured elysium
    I have defined an Event class: Event and all the following classes inherit from Event: AEvent BEvent CEvent DEvent Now, with the info I gather from all these Event classes, I will make a chart. With AEvent and BEvent, I will generate points for that chart, while with CEvent and DEvent I will paint certain regions of the chart. Now, how should I signal this in my class hierarchy? Should I make AEvent and BEvent inherit from PointEvent while CEvent and DEvent inherit from RegionEvent, being that both RegionEvent and PointEvent inherit from Event? Should I add a field with an Enum to Event with 2 values, Point and Region, and each of the child classes set their value to it? Should I use some kind of pattern here? Which one? Thanks.

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  • Ms Access Save record in subform

    - by LanguaFlash
    I have a main form with a tab control containing multiple subforms. I need to be sure that the data in a subform is saved when the user switches tabs. The problem is that DoCmd.RunCommand acCmdSaveRecord seems only applies to the current form so it doesn't save the data in the subform. I have tried different events on the subform such as deactivate, OnLostFocus etc but they don't fire until another field somewhere else gets the focus. The ideal solution would seem to be to put something on the OnChange event of the tab control to be sure that all the data is saved. That is my question, how to do I save the record in a subform?

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  • PHP detmine numbers in between two numbers then query

    - by Joshua Anderson
    This should be simple but I can't figure it out <?php $testid = 240; $curid = 251; $cal = $curid - $testid; echo $cal; ?> I want to determine the numbers in between two other numbers so for this example it detects there are 11 numbers in between the $testid and $curid, but i dont need it to do that. I need it to literally figure the numbers in between $curid - $testid which in this example would be 241, 242, 243... all the way to 251 then i need to create a loop with those numbers and do a query below with each one $cal = $curid - $testid; mysql_query("SELECT * FROM wall WHERE id='".$cal."'") // and for each number mysql should out put each data field with those numbers. Thanks again, love you guys.

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  • Drupal 6: display image with View in blog posts listing page...

    - by artmania
    Hi friends, I'm new at Drupal, love it so far :) I added Photo and Logo File field to blog entry with CCK. I need to display these images at blog post listing page. So at View Module, I added fields as below; At View: Content: Logo URL to file Content: Photo Path to file and it displays only names of files, but I need to display image. how can I make it with View Module? Blog Listing Page: Logo: http://blabla.com/drupal/sites/default/files/Logo_0.jpeg Photo: sites/default/files/photoname_0.jpeg Appreciate helps!!!! Thanks a lot!

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  • Adhoc Data processing / ETL

    - by Dane
    I've just started at a new company in outsourced communications (e.g. print and mail, email, fax). One of the requirements is to process clients data and get it ready for mailing. For recurring jobs, this is easy using an ETL tool linked in with some addressing software, but for adhoc stuff it's a bit overkill. I've used inhouse developed stuff before (clunky but usable), but I don't want to have to re-develop that here. Any recommendations? Some features : Basic DBMS functionality (preferably with a proper DBMS backend for SQL support) Field concatenation (e.g. combine Firstname + Surname) "Pushing columns" (e.g. with address fields 1 - 8, push them left so if one is blank, the next one gets pushed up) Australia post mail sorting and dpid allocation (or can link into external tools relatively easily)

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  • Ampersand in GET, PHP

    - by NightMICU
    I have a simple form that generates a new photo gallery, sending the title and a description to MySQL and redirecting the user to a page where they can upload photos. Everything worked fine until the ampersand entered the equation. The information is sent from a jQuery modal dialog to a PHP page which then submits the entry to the database. After Ajax completes successfully, the user is sent to the upload page with a GET URL to tell the page what album it is uploading to -- $.ajax ({ type: "POST", url: "../../includes/forms/add_gallery.php", data: $("#addGallery form").serialize(), success: function() { $("#addGallery").dialog('close'); window.location.href = 'display_album.php?album=' + title; } }); If the title has an ampersand, the Title field on the upload page does not display properly. Is there a way to escape ampersand for GET? Thanks

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  • Add HTMl to CCK within Drupal

    - by Romelus96
    Hello im a newbie at using Drupal, and have come across a block in my progress. I have been using CCK to add new content types to my forms. I was wondering if there was any way to add to the form that is generated so that i may contain the elements and also insert visual html code like head rules etc. I have dabbled with the hook_form_alter() and it does not seem to help me in my efforts. Ive been through adjusting tpl.php files and such and have made no progress. Please if there is any one there in the inter-webs who is knowledgeable on this matter your advice would be greatly appreciated. Here is just an example of what I would want to do within the form: 1. Contain field elements within DIV's 2. Add HTML Content into the form

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  • How to do google webpage translate in a Java class

    - by Robert
    Hi,this is a follow-up question of mine. Suppose now I have a URL : http://www.baidu.com/s?bs=%B0%C2%B0%CD%C2%ED&f=8&wd=%B0%C2%B0%CD%C2%ED and it work perfectly by inputting it in the text field of google translate and select from "Chinese" to English. My question is ,suppose now I want to achieve this in Java, I would like to adopt "Process q=Runtime.getRuntime().exec( "cmd /c start +URL" approach to do this. Could I achieve that by simply concatenating the Google translate URL and the webpage URL? If yes,could you please elaborte,thanks.

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  • SharePoint 2007 Publishing site and Audience Targeting in Web Part

    - by Robert Vukovic
    In a Publishing site I have web part that has to show news items from the list that has Audience Targeting field. I am using CAML query to retrieve small number of last news items. Is it possible to specify Target Audience in the CAML query ? If not, how should I do it ? Retrieve all results and than apply filter in a loop ? I am practically duplicating Content Query Web Part and I need Audience Targeting in my custom web part.

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  • Tables with no Primary Key

    - by Matt Hamilton
    I have several tables whose only unique data is a uniqueidentifier (a Guid) column. Because guids are non-sequential (and they're client-side generated so I can't use newsequentialid()), I have made a non-primary, non-clustered index on this ID field rather than giving the tables a clustered primary key. I'm wondering what the performance implications are for this approach. I've seen some people suggest that tables should have an auto-incrementing ("identity") int as a clustered primary key even if it doesn't have any meaning, as it means that the database engine itself can use that value to quickly look up a row instead of having to use a bookmark. My database is merge-replicated across a bunch of servers, so I've shied away from identity int columns as they're a bit hairy to get right in replication. What are your thoughts? Should tables have primary keys? Or is it ok to not have any clustered indexes if there are no sensible columns to index that way?

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  • mysql error in query for timestamp interval

    - by nik parsa
    I have voting_IP table as follow: +-----------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-----------+-------------+------+-----+---------+----------------+ | ip_id | int(11) | NO | PRI | NULL | auto_increment | | mes_id_fk | int(11) | YES | MUL | NULL | | | ip_add | varchar(40) | YES | | NULL | | | timestamp | datetime | YES | | NULL | | +-----------+-------------+------+-----+---------+----------------+ I want to run this query which has errors and I don't know how to correct it? $ip_sql=mysql_query("select ip_add from Voting_IP where mes_id_fk='$id' and ip_add='$ip' and timestamp > (DATE_ADD(now(), INTERVAL -1 HOUR);)"); I also tried this one: $ip_sql=mysql_query("select ip_add from Voting_IP where (mes_id_fk='$id' and ip_add='$ip' and timestamp > (DATE_ADD(now(), INTERVAL -1 HOUR);))");

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  • java reading numbers, interpreting as octal, want interpreted as string

    - by user331401
    hello, i am having an issue, where java is reading an array list from a YAML file of numbers, or strings, and it is interpreting the numbers as octal if it has a leading 0, and no 8-9 digit. is there a way to force java to read the yaml field as a string? code: ArrayList recordrarray = (ArrayList) sect.get("recordnum"); if (recordrarray != null) { recno = join (recordrarray, " "); } HAVE ALSO TRIED: Iterator<String> iter = recordrarray.iterator(); if (iter.hasNext()) recno = " " +String.valueOf(iter.next()); System.out.println(" this recnum:" + recno); while (iter.hasNext()){ recno += ""+String.valueOf(iter.next())); System.out.println(" done recnum:" + String.valueOf(iter.next())); } the input is such: 061456 changes to 25390 061506 changes to 25414 061559 - FINE it took a while to figure out what it was doing, and apparently this is a common issue for java, ideas? thanks

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  • How to impelement messaging services in a website?

    - by Alex
    There's a website which currently has only web interfaces for all the users. However, new requirement has emerged which says that there is a need in providing an alternative interface for a certain group of website users who want to regularly receive pushed notifications(messages) that would inform them about new events(news) in their field of interest. What sort of interface would it be?Is it all about using a MOM(message-oriented middleware) like JMS and deploying it withing an application server on a website using publish/subscribe model?Is it the correct way how to meet these sort of requirements?And if it's not a web-based interface,would kind of interface would it be then for the users? Thanks

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  • Unable to delete oldest table partition - Oracle 11g

    - by poijoi
    Hi, I'm using the 11g interval partitioning feature in one of my tables. I set it up to create 1 day partitions on a timestamp field and created a job to delete data 3 months old. When I try to delete the oldest partition I get the following error: ORA-14758: Last partition in the range section cannot be dropped I would have thought that "Last" refers to the newest partition and not the oldest. How should I interpret this error? Is there something wrong with my partitions or should I in fact keep the oldest partition there at all time? Thanks in advance, PJ

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  • Adding childs to list of parents with jquery /mvc2

    - by John Landheer
    Hi, I have a table of products on my page, each product has zero or more colors, the colors are shown as a list beneath the product. After the colors I have a button to add a color. The button will do an ajax call with the parent product id to a controller which will return a JSON object with color information. My problem is where to store the product id in the DOM, should I put it in a hidden field and use jquery in the click event of the "add color" to get to it? What is the best way to do this? TIA, John EDIT: The page is initially rendered on the server so I don't want to use jquery to add the id's to the page.

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  • Converting to Byte Array after reading a BLOB from SQL in C#

    - by Soham
    Hi All, I need to read a BLOB and store it in a byte[], before going forward with Deserializing; Consider: //Reading the Database with DataAdapterInstance.Fill(DataSet); DataTable dt = DataSet.Tables[0]; foreach (DataRow row in dt.Rows) { byte[] BinDate = Byte.Parse(row["Date"].ToString()); // convert successfully to byte[] } I need help in this C# statement, as I am not able to convert an object type into a byte[]. Note, "Date" field in the table is a blob and not of type Date; Help appreciated; Soham

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  • ruby on rails params injection

    - by Julien P.
    Hello everyone, I have a question about ruby on rails and the process of assigning variables using the params variable passed through a form class User attr_accessible :available_to_admins, :name end Let's say that I have a field that is only available to my admins. Assuming that you are not an admin, I am going to not display the available_to_admins input in your form. After that, when I want to save your data I'll just do a: User.update_attributes(params[:user]) If you are an admin, then no problem, the params[:user] is going to contain name and available_tu_admins and if you're not then only your name. Since the available_to_admins is an attr_accessible parameter, how should I prevent non admin users from being able to inject a variable containing the available_to_admins input with their new value?

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  • Parse simple JSON with Jackson

    - by siik
    Here is my JSON: { "i": 53691, "s": "Something" } Here is my model: public class Test() { private int i; private String s; public setInt(int i){ this.i = i; } public setString(String s){ this.s = s; } // getters here } Here is my class for server's response: public class ServerResponse(){ private Test; public void setTest(Test test){ this.test = test;} public Test getTest(){ return Test; } } When I do: ObjectMapper mapper = new ObjectMapper(); mapper.readValue(json, serverResponse); I'm getting an exception like: JsonProcessingException: Unrecognized field "i" (Class MyClass), not marked as ignorable Please advice.

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