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• How closely related is music composition to coding?

  - by ehsanul

  It seems to me as if there are a higher proportion of musicians in the programming field than in the general public. Maybe it's just an illusion caused by the fact that I'm an amateur guitarist myself, so I tend to notice coding musicians (or musical coders?) more. But I wonder if there really is some connection. Perhaps a shared set of skills or an innate quality that makes it more likely for someone who enjoys programming to also enjoy playing and composing music. How closely related is music composition to coding? I'd especially like to hear from the musicians around here.

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• how to get the top left coordinates of the screen with javascript on firefox

  - by artsince

  I have a <div> element with position: absolute and z-index something big. I would like to cover the entire screen with this div with javascript. This is what I do and it works: document.getElementById('mydiv').style.top = 0; document.getElementById('mydiv').style.left = 0; document.getElementById('mydiv').style.width = '100%'; document.getElementById('mydiv').style.height = '100%'; However, when I scroll down with long webpages, this code displays my div at the top of the page, so the div renders above the region I currently view. How can I change the top and left values so that my div always covers the active field I am viewing? I work on firefox 3.6.*. Thank you

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• How to load / open / suck an repository from GitHub into GitX?

  - by mystify

  I downloaded Git and GitX for mac and installed it. Now, just for fun, I want to know how I could obtain an repository from GitHub like http://github.com/zoul/Finch.git ?? For me all this Git stuff looks like I have a client and connect to a server in order to get some data from some repository. Like FTP, well not really. But similar. Just one problem: Where to enter that URL? Is there some field for that? Some hidden command? I did manage to create a new project / repository on my mac, but now I have an empty window and no option to suck down that code from GitHub.

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• Make is more OOPey - good structure?

  - by Tom

  Hi, I just want advice on whether I could improve structure around a particular class which handles all disk access functions The structure of my program is that I have a class called Disk which gets data from flatfiles and databases on a, you guessed it, hard disk drive. I have functions like LoadTextFileToStringList, WriteStringToTextFile, DeleteLineInTextFile etc which are kind of "generic methods" In the same class I also have some more specific methods such as GetXFromDisk where X might be a particular field in a database table/query. Should I separate out the generic methods from the specialised. Should I make another class which inherits the generic methods. At the moment my class is static as there is no need to have an internal state of the class. I'm not really OOPing am I? Thanks Thomas

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• Django loaddata throws ValidationError: [u'Enter a valid date in YYYY-MM-DD format.'] on null=true f

  - by datakid

  When I run: django-admin.py loaddata ../data/library_authors.json the error is: ... ValidationError: [u'Enter a valid date in YYYY-MM-DD format.'] The model: class Writer(models.Model): first = models.CharField(u'First Name', max_length=30) other = models.CharField(u'Other Names', max_length=30, blank=True) last = models.CharField(u'Last Name', max_length=30) dob = models.DateField(u'Date of Birth', blank=True, null=True) class Meta: abstract = True ordering = ['last'] unique_together = ("first", "last") class Author(Writer): language = models.CharField(max_length=20, choices=LANGUAGES, blank=True) class Meta: verbose_name = 'Author' verbose_name_plural = 'Authors' Note that the dob DateField has blank=True, null=True The json file has structure: [ { "pk": 1, "model": "books.author", "fields": { "dob": "", "other": "", "last": "Carey", "language": "", "first": "Peter" } }, { "pk": 3, "model": "books.author", "fields": { "dob": "", "other": "", "last": "Brown", "language": "", "first": "Carter" } } ] The backing mysql database has the relevent date field in the relevant table set to NULL as default and Null? = YES. Any ideas on what I'm doing wrong or how I can get loaddata to accept null date values?

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• Exchange cmdlets from c#

  - by poffio

  Hi to all, i need to run exchange cmdlets from a c# console application. i followed with success the guide from http://msdn.microsoft.com/en-us/library/bb332449.aspx but only for the basic command and one parameter. the cmdlets i need to run is: Get-MailboxStatistics -server evs | Select servername, StorageGroupName,databasename,@{expression={$_.TotalItemSize.value.ToKB()}},ItemCount,mailboxguid In detail i cannot specify the field that i need after the select "command" and i don't know how can i pass to cmdlets, the expression "@{expression={$_.TotalItemSize.value.ToKB()}}". Is there a way to do it in managed code ? Thank you. Fabio.

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• how to automate / script processes like signups .

  - by silverkid

  which is the best tool for this - Automation of signup process to a website , e.g an email signup The tool should be able to take data from an external data file like an excel of csv file this data file would contain data such as first name , last name , username, password etc. basic data required during an email signup . I am imagining the data file to contain of each field in a seperate column and each row to contain data for different registration / user. At the places where manual intervention is required like image verification etc. the tool should be able to pause the script until manual bit is done then continue with the script. What is the best way to do this - an automation tool , or any scripting language - please suggest .

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• Postfix flow/hook reference, or high-level overview?

  - by threecheeseopera

  The Postfix MTA consists of several components/services that work together to perform the different stages of delivery and receipt of mail; these include the smtp daemon, the pickup and cleanup processes, the queue manager, the smtp service, pipe/spawn/virtual/rewrite ... and others (including the possibility of custom components). Postfix also provides several types of hooks that allow it to integrate with external software, such as policy servers, filters, bounce handlers, loggers, and authentication mechanisms; these hooks can be connected to different components/stages of the delivery process, and can communicate via (at least) IPC, network, database, several types of flat files, or a predefined protocol (e.g. milter). An old and very limited example of this is shown at this page. My question: Does anyone have access to a resource that describes these hooks, the components/delivery stages that the hook can interact with, and the supported communication methods? Or, more likely, documentation of the various Postfix components and the hooks/methods that they support? For example: Given the requirement "if the recipient primary MX server matches 'shadysmtpd', check the recipient address against a list; if there is a match, terminate the SMTP connection without notice". My software would need to 1) integrate into the proper part of the SMTP process, 2) use some method to perform the address check (TCP map server? regular expressions? mysql?), and 3) implement the required action (connection termination). Additionally, there will probably be several methods to accomplish this, and another requirement would be to find that which best fits (ex: a network server might be faster than a flat-file lookup; or, if a large volume of mail might be affected by this check, it should be performed as early in the mail process as possible). Real-world example: The apolicy policy server (performs checks on addresses according to user-defined rules) is designed as a standalone TCP server that hooks into Postfix inside the smtpd component via the directive 'check_policy_service inet:127.0.0.1:10001' in the 'smtpd_client_restrictions' configuration option. This means that, when Postfix first receives an item of mail to be delivered, it will create a TCP connection to the policy server address:port for the purpose of determining if the client is allowed to send mail from this server (in addition to whatever other restrictions / restriction lookup methods are defined in that option); the proper action will be taken based on the server's response. Notes: 1)The Postfix architecture page describes some of this information in ascii art; what I am hoping for is distilled, condensed, reference material. 2) Please correct me if I am wrong on any level; there is a mountain of material, and I am just one man ;) Thanks!

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• Adding file of the same name into the same list and unable to update name of the SPFile

  - by BeraCim

  Hi all: I'm having difficulties adding file of the same name in the same list and subsequently updating/changing/modifying the name of a SPFile. Basically, this is what I'm trying to do: string fileName = "something"; // obtained from a loop -- loop omitted here. SPFile file = folder.Files.Add(fileName, otherFile.OpenBinary()); The Add method will generate a runtime exception when it finds another file of the same name in the same list/folder. So I thought of changing the file name later in the process: string newGuid = Guid.NewGuid().ToString(); SPFile file = folder.Files.Add(newGuid, otherFile.OpenBinary()); // some other processing... afterwards, rename the file file.name = fileName; file.Item.Update(); A few minute of googling indicated I need to either move the file around, or update the name field by using ["Name"] instead. I was wondering are there any other better ways to get around this problem? Thanks.

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• How can I call model methods or properties from Django Admin?

  - by kg

  Is there a natural way to display model methods or properties in the Django admin site? In my case I have base statistics for a character that are part of the model, but other things such as status effects which affect the total calculation for that statistic: class Character(models.Model): base_dexterity = models.IntegerField(default=0) @property def dexterity(stat_name): total = self.base_dexterity total += sum(s.dexterity for s in self.status.all()]) return total It would be nice if I could display the total calculated statistic alongside the field to change the base statistic in the Change Character admin page, but it is not clear to me how to incorporate that information into the page.

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• How should I store an Java Enum in JavaDB?

  - by Jonas

  How should I store an Java Enum in JavaDB? Should I try to map the enums to SMALLINT and keep the values in source code only? The embedded database is only used by a single application. Or should I just store the values as DECIMAL? None of these solutions feels good/robust for me. Is there any better alternatives? Here is my enum: import java.math.BigDecimal; public enum Vat { NORMAL(new BigDecimal("0.25")), FOOD(new BigDecimal("0.12")), BOOKS(new BigDecimal("0.06")), NONE(new BigDecimal("0.00")); private final BigDecimal value; Vat(BigDecimal val) { value = val; } public BigDecimal getValue() { return value; } } I have read other similar questions on this topic, but the problem or solution doesn't match my problem. Enum storage in Database field, Best method to store Enum in Database, Best way to store enum values in database - String or Int

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• cakephp filter index pages according to foreign keys

  - by Marki

  Hi there, I'm pretty new to CakePHP and was missing a crucial feature not generated as scaffold: filtering. What do I have to do to provide dropdowns or multi-selects on the index pages for each field that is a (foreign) key, thereby allowing to filter the table ("OR" inside multi-select, "AND" between different multi-selects, if any)? From what my websearch has shown me there are many more people trying to accomplish the same thing, although I couldn't find anything that would work for me because either they have text fields and do wildcard filtering, or the plugins they propose only work for 1.2 whereas i now started with 1.3 etc. etc. Can someone alleviate the confusion and maybe present some working code or direct me to the definitive guide[tm] where this matter has been solved? Thx

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• How do I get the value of a DynamicControl?

  - by Telos

  I'm using ASP.NET Dynamic Data functionality to do something a little weird. Namely, create a dynamic list of fields as children of the main object. So basically I have Ticket.Fields. The main page lists all the fields for Ticket, and the Fields property has a DynamicControl that generates a list of controls to collect more data. The tricky part is that this list ALSO uses Dynamic Data to generate the controls, so each field can be any of the defined FieldTemplates... meaning I don't necessarily know what the actual data control will be when I try to get the value. So, how do I get the value of a DynamicControl? Do I need to create a new subclass of FieldTemplate that provides a means to get at the value?

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• How to keep submit button visible and executable upon textarea onblur

  - by ninumedia

  I have a <div id="comment_posting_holder"> tag that holds a form with two elements: a textarea box and a submit button. I want to have the div tag (containing the textarea and submit button) disappear if I click somewhere "OTHER" than the submit button. I have a start for the code below. So upon leaving focus from the textarea, I can make the div tag disappear. I tried placing in a mouseclick event inside the blur function for the submit button but that did not work. Any suggestions? Thank you! **Facebook does this with it's comments. If you click on a "Post your comment..." field the textarea appears and then it will disappear upon losing focus other than if you pressed the submit button. $('textarea').blur(function() { $('#comment_posting_holder).hide(); });

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• MS Access 2003 - Formatting results in a list box problem.

  - by Justin

  So I have a list box that displays averages in a table like format from a crossyab query. It's just what I need the query is right, there is just one thing. I had to set the field properties in the query as format: standard..decimal:2. Which is exactly what I needed. However..the list box will not pick up on this. First I typed the crosstab sql into the list box's properties....and then I ran into this problem. So then I actually just created the query object, saved it and set that as the rowsource for the list box. Still won't work....when I open the query it is the correct format. So is there a way to further format a text box? Is there a way tell it to limit decimal places to one or two on returned values? Thanks!

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• ruby on rails group by with null values problem

  - by winter sun

  I have an hour table in witch I store user time tracking information, the table consists from the following cells project_id task_id (optional can be null) worker_id reported_date working_hours each worker enters sevral records per day so generally the table is looking like this id project_id worker_id task_id reported_date working hours; == =========== ========= ========= ============= ============== 1 1 1 1 10/10/2011 4 2 1 1 1 10/10/2011 14 3 1 1 10/10/2011 4 4 1 1 10/10/2011 14 the task_id is not a must field so there can be times when the user is not selecting it and ther task_id cell is empty now i need to display the data by using group by clouse so the resualt will be somthing like this project_id worker_id task_id working hours ========== ========= ========= ============== 1 1 1 18 1 1 18 I did the folowing group by condition @group_hours=Hour.group('project_id,worker_id,task_id)').select('project_id, task_id ,worker_id,sum(working_hours)as working_hours_sum') My view looks like this <% @group_hours.each do |b| % <%= b.project.name if b.project % <%= b.worker.First_name if b.worker % <%= b.task.name if b.task % <%= b.working_hours_sum % <%end% This it is working but only if the task_id is not null when task id is null it present all the records without grouping them like this project_id worker_id task_id working hours =========== ========= ========= ============== 1 1 1 18 1 1 4 1 1 14 I will appreciate any kind of solution to this problem

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• Rails override validator message

  - by Anand

  Hi, I have a site thats served in 2 flavours, English and French. Here's some code app/views/user/register.html.erb ----------------- <% form_for .....> <%= f.text_field :first_name %> <% end %> app/models/user.rb ------------------ class User < ActiveRecord::Base validates_presence_of :first_name end Now to display the error message in case if the site is being served in the French version, I have app/config/locales/fr.yml ------------------------- activerecord: errors: messages: empty: "ne peut pas être vide" So if someone does not fill in a first name, the validator takes the name of the field and appends the custom message for empty clause giving "First name ne peut pas être vide" which is incorrect, coz 'First name' in French is 'Prénom', hence it should be "Prénom ne peut pas être vide" Please can someone suggest a way of achieving the desired result.

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• PHP & MySQL username submit problem

  - by peakUC

  I want to allow users to either have there username field empty at any time but I get the username error message Your username is unavailable! how can I correct this problem? Here is the PHP code. if(isset($_POST['username'])) { $u = "SELECT * FROM users WHERE username = '$username' AND user_id <> '$user_id'"; $r = mysqli_query ($mysqli, $u) or trigger_error("Query: $q\n<br />MySQL Error: " . mysqli_error($mysqli)); if (mysqli_num_rows($r) == TRUE) { // Unavailable. echo '<p class="error">Your username is unavailable!</p>'; $username = NULL; } else if(mysqli_num_rows($r) == 0) { // Available. $username = mysqli_real_escape_string($mysqli, $purifier->purify(htmlentities(strip_tags($_POST['username'])))); } }

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• getting a date array from a mysql database?

  - by user296516

  Hi guys, I have a database with date field is this format "2010.06.11. | 10:26 13" What is need is a php array that would hold all the different dates, .i.e. array[0] = "2010.06.09." array[1] = "2010.06.10." array[2] = "2010.06.11." Currently I am doing it by selecting the whole table, then looping through the result and adding the date substr to an array if it is not already there. But maybe there is a faster way? Thanks.

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• is there a such thing as a randomly accessible pseudo-random number generator? (preferably open-sour

  - by lucid

  first off, is there a such thing as a random access random number generator, where you could not only sequentially generate random numbers as we're all used to, assuming rand100() always generates a value from 0-100: for (int i=0;i<5;i++) print rand100() output: 14 75 36 22 67 but also randomly access any random value like: rand100(0) would output 14 as long as you didn't change the seed rand100(3) would always output 22 rand100(4) would always output 67 and so on... I've actually found an open-source generator algorithm that does this, but you cannot change the seed. I know that pseudorandomness is a complex field; I wouldn't know how to alter it to add that functionality. Is there a seedable random access random number generator, preferably open source? or is there a better term for this I can google for more information? if not, part 2 of my question would be, is there any reliably random open source conventional seedable pseudorandom number generator so I could port it to multiple platforms/languages while retaining a consistent sequence of values for each platform for any given seed?

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• ASP MVC: Custom Validation Attribute

  - by user323395

  I'm trying to write my own Custom Validation attribute but i'm having some problems. The attribute i'm trying to write is that when a user logs in, the password will be compared against the confirmation password. namespace EventCompanion.Data.Attributes { public class ComparePassword : ValidationAttribute { public string PasswordToCompareWith { get; set; } public override bool IsValid(object value) { if (PasswordToCompareWith == (string)value) { return true; } return false; } } Now my problem is when i'm trying to set the attribute like this in the model file: [Required] [ComparePassword(PasswordToCompareWith=ConfirmPassword)] public string Password { get; set; } [Required] public string ConfirmPassword { get; set; } } I get the following error: Error 1 An object reference is required for the non-static field, method, or property 'Project.Data.Models.GebruikerRegistreerModel.ConfirmPassword.get' It seems that VS is not accepting the confirmpassword in the "PasswordToCompareWith=ConfirmPassword" part Now my question: What am i doing wrong? Thanks in advance!!!

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• Do any browsers yet support HTML5's checkValidity() method?

  - by James A. Rosen

  The HTML5 spec defines some very interesting validation components, including pattern (for validating against a Regexp) and required (for marking a field as required). As best I can tell, however, no browser yet actually does any validation based on these attributes. I found a comparison of HTML5 support across engines, but there is no information about validation there. In the browsers I've tried (Firefox 3.5.8 and Safari 4.0.4), no object has a checkValidity() method, so I can't run the validations even though I can define them. Is there any support for this feature out there so I can experiment?

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• mysql select query problem

  - by Chocho

  i have a form that has a multiple select drop down. a user can select more than one options in the select. the name of the select is array[]; using php i implode(",",$array) in mysql db, it stores the field as a text in this format "places"= "new york, toronto, london" when i want to display these fields i explode the commas. i am trying to run a report to display the places. here is my select: "select * from mytable where db.places .. userSelectedPlaces" how can i check toronto in lists of "places" that user selected? note "places" in the db might be either just "toronto" or it might be comma separated lists of places like "ny, toronto, london, paris, etc".

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• .net converting bytearray to double[]

  - by AJ

  Hello, I am working with a database from a legacy app which stores 24 floating point values (doubles) as a byte array of length 192, so 8 bytes per value. This byte array is stored in a column of type image in a SQL Server 2005 database. In my .net app I need to read this byte array and convert it to a array of type Double[24]. I can access the field easy enough reader.GetBytes(...) but how to convert the returned ByteArray to Double[24] Any ideas? Thanks, AJ

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• jQuery Validation Plugin - Enable 'Eager' Validation only after and Invalid Submit

  - by Ryan Fitzer

  By default, if a user enters a value in a field, the 'eager' validation kicks in. Is there any way to disable 'eager' validation before submit and then enable it after an invalid submit has happened? I've used $.validator.setDefaults() to initially set the onkeyup and onfocusout properties to false. In the invalidHandler method I rerun the $.validator.setDefaults(), setting onkeyup and onfocusout properties to true. No luck with this approach. Basically, I only want the 'eager' validation to take place after the user tries to submit an invalid form. Thanks for any help.

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