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• read in bash on tab-delimited file without empty fields collapsing

  - by Charles Duffy

  I'm trying to read a multi-line tab-separated file in bash. The format is such that empty fields are expected. Unfortunately, the shell is collapsing together field separators which are next to each other, as so: # IFS=$'\t' # read one two three <<<$'one\t\tthree' # printf '<%s> ' "$one" "$two" "$three"; printf '\n' <one> <three> <> ...as opposed to the desired output of <one> <> <three>. Can this be resolved without resorting to a separate language (such as awk)?

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• where to store information like gender and year of birth?

  - by fayer

  i have users and i need them to specify a gender (male, female) and year of birth (1930, 1931...1999, 2000). i wonder where i should store these values: in the database? in php file? if i store them in the database i have to manually create all entries first. but a good thing is that the user table will have constraints so the gender field will always be male or female, it cannot be something else. if i store them in the php file (eg. as html) then i can easily add/remove values. but a con is that i dont have the constraints in database, so another value could be stored as gender by mistake, even though i could add validation in php backend so even if someone hacked the html it is not stored unless it's either male or female. what is best practice to do this? thanks

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• [Flex] Using same set of columns in AdvancedDataGrid in a TabBar

  - by user283403

  I have a TabBar control which will show an AdvancedDataGrid with same set of columns on different tabs, i am doing this so that i can show similar data on different tab pages. Column heading will be the same on all grids, is there a way I can put all column headings in an array and set that as columns of data grid? I tried setting the columns property but it doesn't work. Also I need to set ID property for a single column in the grid to set it the treecolumn so one column must have individual id field too.

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• Automatic images translation to 3d model

  - by farrakhov-bulat

  I'm quite interested in automatic images translation to 3d models. Not really for commercial product, but from the point of possible academic research and implementation. What I'd like to achieve is almost transparent for user process of transformation series of images (fewer is better) to 3d model which might be shown in flash/silverlight/javafx or similar. Consider online furniture store with 3d models of all items in stock. Kinda cool to have ability to see the product in 3d before purchasing it. I managed to find a few pieces of software, like insight3d, but it couldn't be used in my case I guess. So, are there any similar projects or tips for me? If it would require to write that piece of software - I'd really love to dig into research on this field.

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• Improve SQL strategy - denormalize in object-children-images case

  - by fesja

  Hi, I have a Tour object which has many Place objects. For the list of tours, I want to show some info of the tour, the number of places of the tour, and three Place's images. Right one my SQL queries are (i'm using Doctrine with Symfony on MySQL) get Tour get Tour 1 places get Tour 2 places get Tour 3 places ... get Tour n places If I have a three Tour list, it's not so bad; but I'm sure it can get bad if I do a 10-20 tour-list. So, thinking on how to improve the queries I've thought of several measures: Having a place count cache Storing the urls of three images on a new tour field. The problem with 2. is that if I change the image, I have to check all the tours to update that image for another one. What solution do you think is best to scale the system in a near future? Any other suggestion. thanks!

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• Programatically creating site using custom template

  - by dexter

  hi, Help plz! How can I make a webpart that has a button called "Create Site" and it programatically create a site (using my own custom template e.g. Mytemplate.STP) ? The reason is of such task is, I dont want user to go into "Sites Action" - create Site - and then fill the whole form. I want to give a user an easy interface with only title field, the rest i want to be done programatically. Any other suggestions or work arounds are also appreciated. Thank you

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• Are there libraries or techniques for collecting and weighing keywords from a block of text?

  - by Soviut

  I have a field in my database that can contain large blocks of text. I need to make this searchable but don't have the ability to use full text searching. Instead, on update, I want my business layer to process the block of text and extract keywords from it which I can save as searchable metadata. Ideally, these keywords could then be weighed based on the number of times they appear in the block of text. Naturally, words like "the", "and", "of", etc. should be discarded as they just add a lot of noise to the search. Are there tools or libraries in Python that can do this filtering or should I roll my own?

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• Why does the :nth-child(2) selector work on what I expect to be :first-child?

  - by Ben

  I have an example of what I'm trying to ask. I use this kind of format often. I'd expect to be able to select that first div with fieldset div:first-child { } but it seems that it's only grabbed by the 2nd child selector. I would expect "field 1" to be red and not blue. It makes more sense semantically (to me at least) to say "style the first div in the fieldset like so" instead of saying the 2nd. Why is this happening and is there a way to achieve the effect I want (to be able to call div:first-child)?

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• How to determine the radius and center of a circle when only three noncollinear points are known?

  - by Bob

  I'm working on a C# program that deals with Oracle Spatial geometry. When circle data is stored in a geometry field only three non-collinear points are stored to represent the circle. The problem is that I need to use this data on a Google Maps web page and need the center point and radius of the circle (since my circle drawing function uses that information). Can anyone help with the math involved and translating said math to C#? I think this page may hold the answer, but I'm having a hard time following it. There are formulas for radius and center given three points, but then they define the variables as matrices and I get lost at that point. How would I solve that in code?

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• Display error when entire form is blank in CodeIgniter

  - by Joe

  I'm trying to create a fairly simple form that has a few checkboxes and input fields and a textarea. Nothing is required by itself; however, if 'A' checkbox is checked, then 'A' input field is required (and so on for the couple other checkboxes I have). I have the above functionality in place, but I'm having a tough time figuring out how to have an error returned if the form is submitted blank (since nothing is required by default). Does anyone know of an easy-ish solution for this? It seems like it should be so simple... Thanks

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• not inserting data into database from jsf web module connecting with ejb module..

  - by krazyk

  hello.. in my application i had taken ejbmodule and web module seprately. in ejb module there is one entity and session bean with remote interface. in web module i had taken jsf and used managed bean for calling method of session bean. and used jsf page with .jsp extension where m had put 2 textboxes and one commandbutton.which mapped to managed bean. my database table has only 2 field. bt when i run the application and entered data then click on button no operation is done.no data inserted into database table. i m nt given any error.so couldn't found any problem.. also dnt knw clear abt faces-config.xml file i had written abt managed bean into tht file.. plz guide me wht will be the actual problem?. thanks in advance.. waiting for positive reply..

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• GWT:how to make tabPanel to 100% height

  - by junaidp

  I am using TabPanel in my GWt application <g:HTMLPanel> <div class="center"> <g:TabLayoutPanel ui:field="tabPanel" barUnit="PX" barHeight="40" width="100%;"> <g:tab> <g:header> DashBoard </g:header> </ g:TabLayoutPanel> using this for my tabpanel height .gwt-TabLayoutPanel { min-height:500px; } its working fine , BUT i want this height to be 100%, But when I make it to 100% ,The whole TabPanel disappears , Any solution for that ..coz when my stuff hights increase , the lower are start cutting off .. thanks

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• using dummy row with NOT NULL to solve DEFAUT NULL

  - by Tony38

  I know having DEFAULT NULLS is not a good practice but I have many optional lookup values which are FK in the system so to solve this issue here is what i am doing: I use NOT NULL for every FK / lookup valve field. I have the first row in every table which is PK id = 1 as a dummy row with just "none" in all the columns. this way I can use NOT NULL in my schema and if needed reference to the none row values which should be null. Is this a good design or any other work arounds?

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• Ruby on Rails: Is there a way to tell what fields failed validation in ActiveRecord?

  - by randombits

  I'm attempting to create an XML builder file that tells a user to know exactly what fields failed validation in the output. I also want to display their input back to them, so that requires me figuring out which fields failed validation. Meaning if someone fails on creating a new user resource, I want to display XML that's meaningful (Besides a meaningful HTTP status number) such as: <errors> <user> <email>bad@email: Invalid email format</email> </user> <errors> The above is tough to do in an XML builder file without knowing what field failed. And if I just iterate over error messages, I won't know how to prob my @user object to get the value that the user supplied.

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• Running [R] on a Netbook

  - by Thomas

  I am interested in purchasing a netbook to do field research in another country. My hardware specifications for the nebtook are fairly basic: Be rugged enough to survive a bit of wear and tear Fairly fast processing (the ability to upgrade from 1GB of RAM to 2GB) A battery life of longer than 6 hours At least a 10 inch screen A decent camera for Skyping However, I am mainly concerned about being able to do basic statistical analysis in conjunction with R Be able run a Spreadsheet program to do basic data input (like Excel or Open Office) Use R to do basic data analysis (Regression, some simulation (nothing crazy), data cleaning, and some of the functionality) Word Processing (Word or Open Office) Do you have any suggestions on which models or brands my fit my needs? Some of the models I am considering: Samsung NB-30 Toshiba NB 305 Asus Eee PC 1005HA Lenovo S10-2 Does anyone use R on a netbook, and if so do you have any recommendations on how best to optimize it? This article from Lifehacker mentions some OS. Anybody use these in conjunction with R? Any help would be much appreciated.

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• Large strings: Text files or SQL DB?

  - by Tommo

  I am coding a forum system using PHP. I am currently storing a threads ID, title, author, views and other attributes in an SQL database and then storing the thread body (the HTML and BBcode) in text files inside a folder named after the thread ID. In practise it's really simple to grab the database values then just grab the thread body from the text file, but I was wondering if this is the 'proper way'? I have personally no problems doing this but if it turns out it is massively inefficient and I should instead store both the thread body HTML and BBcode in the database instead then I will change. However, to me it seems wrong to store such a (very possibly) huge string of multi-line text along with lots of different characters in a database - I was taught that databases are more for short field 'values' rather than website content. I would just like a definitive answer to this because it's been bugging me for ages as to wherever I’ve been doing it properly. Does anyone know how popular forum systems store threads?

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• JSF validateLength question

  - by user337515

  I have a input field with validation to validate the max and min length <h:inputText id="LABEL_ID" styleClass="textboxsmall" value="#{sampleDatatableBean.accessionLabelId}" maxlength="5"> <f:validateLength minimum="4" maximum="5" /> </h:inputText> <br/><h:message id="LABEL_ID_MSG" styleClass="errorMessage" for="LABEL_ID" /> It validates but I get the below message: "Value is less than allowable minimum of {0}" Shouldn't {0} be replaced by value from minimum? Not sure why its not picking up the value. Any ideas? Version info: <!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd"> <tlib-version>1.0</tlib-version> <jsp-version>1.2</jsp-version>

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• Why a new instance uses logger from old instances?

  - by Roman

  I generate 2 instances in this way: gameManager manager1 = new CTManager(owner,players1,"en"); manager1.start(); gameManager manager2 = new CTManager(owner,players2,"en"); manager2.start(); The start() method of the gameManager looks like that: void start() { game.start(); } When I create the game instance I create a loger: log = Logger.getLogger("TestLog"); (log is a public field of the class in which the game belongs). In the game.start() I run many processes and give them a reference to the corresponding log. So, I expect that manager1 and manager2 will write to different files. But manager2 writes to its own file and to the log file of the manager1. Why can it happen?

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• How would you code this: Grid-breaking shapes

  - by BeachRunnerJoe

  I'm a person that learns best from example. Currently, I'm diving into the field of Web Development after fifteen years of developing desktop apps. I'm still getting used to all the web technologies used for developing modern web sites and everywhere I look, I see cool little UI elements and question how they're implemented. So I thought I'd ask you, the web experts...the wexperts :) What are some straight forward or creative ways you could code this grid-breaking arrow... The basic layout for this page looks like... What would the html/css code look like? Would you split the image into multiple images or could you use a single image? I'm sure this is a really simple concept and it completely boggles me. I'm sorry if this is a strange question, remember I'm a noob! :) Thanks in advance for all your help! Here's a link to the original tutorial where I found these images

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• Drupal: what's the easiest way to let my customer to upload video thumbnails and associate them to v

  - by Patrick

  hi, my customer wants a gallery of videos and images (small thumbnails) and if you click on one of them you can see the picture / video in the overlaying lightbox). Now, I cannot install auto-generating video thumbnails because I don't have access to ffmpeg module on the server. I can only allow my customer to upload these thumbnails by himself. I'm using image and video CCK fields for each node to allow my customer images and videos. However I dunno how should I let him upload thumbnails for his videos. Should I create an additional Image CCK field for this ? Consequently, I should somehow associate the videos with the images in the design and my customer should pay attention to place them in the same order.. this is not very nice solution, but it is the only one that came to my mind so far. Furthermore, I'm using the lightbox I should somehow ignore the video thumbnails and display the videos instead... some tips ? Thanks

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• how to get option title="sample" using jquery

  - by tom

  Hi, I'm trying to update a hidden field based on the a title attribute on a select option, I've tried the code bellow and can't seem to get it to work. Thanks for any help! <form> <select id="selectbox"> <option name="test" value="one" title="title" selected="selected">one</option> <option name="test2" value="two" title="title2">two</option> </select> </form> <input id="update" type="hidden" value="defaultold" /> <script> $('#update').val('default'); $('#selectbox').change(function() { $('#update').val($(this).attr("title")); }); </script>

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• in what way wordpress rewrite pages

  - by Mac Taylor

  Hey Recently I'm interested in post's structure of worpress . They use a table named (wp_posts) and in this table they saved 3 related fields such as : post_title post_name guid It's clear that they save title of each story in post_title field , and slugs in post_name , and full url of a post in guild filed . But where the hell, they rewrite these urls in way it appears in browsers : http://localhost/wordpress/about/ There is no htaccess rules for this ! I checked rewrite.php and didn't understand an inch ?! If you were me , and u need to create such pages , what steps you would take !?

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• Add params before submit form ROR

  - by Jorge Najera T

  It's possible to add some parameters before submit an form? My problem is that I need to send the ticket id to my payment controller. A possibility is to send it through an hidden input field, but there's any other secure way to achieve this? Any help will be appreciated. Thanks. The process of buying a ticket 0) Select the event 1) User select the kind of ticket he wants to buy. 2) User add his personal information 3) Finally the Checkout (payment controller)

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• How should my main web application (A) securely retrieve data from my content storage web applicatio

  - by fonacule

  I have two web applications (A) and (B). (A) is my primary web application. (B) is purely for content storage, such as file uploads by users of (A). What's best way to securely retrieve data from (B) into (A) but in a way that does not expose the data in (B) to potential discovery by third-parties over the public internet or nosy users of (A)? For example, if I use a HTML form POST from (A) to (B) to retrieve user data, and have a hidden form field called user_id=1, then someone could simply change this to user_id=2 and see the content owned by another user of the application. That would be a problem.

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• Access uploaded file in JSON encoded data

  - by okello

  I've encoded my form data into JSON. This has been achieved by the following ExtJS store configuration: Ext.define('XXX.store.Registration', { extend: 'Ext.data.Store', model: 'XXX.model.Registration', autoLoad: true, pageSize: 15, autoLoad: { start: 0, limit: 15 }, proxy: { type: 'ajax', api: { create: './server/registration/create.php', read: './server/registration/get.php', update: './server/registration/update.php', destroy: './server/registration/destroy.php' }, reader: { type: 'json', root: 'registrations', successProperty: 'success' }, writer: { type: 'json', writeAllFields: true, encode: true, root: 'registrations' } } }); My server side code has been implemented in PHP. I can access the encoded form fields by using the field name as a key, as exemplified below: $reg = $_REQUEST['registrations']; $data = json_decode(stripslashes($reg)); $registerNum = $data->registerNum; $folioNum = $data->folioNum; One of the fields in my form is a fileuploadfield. How can I access the uploaded file from the uploaded JSON. Any assistance will be highly appreciated.

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