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• UI design for screen which has number of data entry textFields.

  - by shilpa

  Hi all, my app is an e-commerce application. During the checkout process, I have "recipient" and "credit card" screens. In the recipient screen, there are number of fields for address entry, which makes it very clumsy. Same in the case of the credit card screen, where the user is asked to enter their credit card info and billing address. Can anyone suggest how to design these two pages?

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• Ruby on Rails: How do you add add zeros in front of a number if it's under 10?

  - by sjsc

  I'm looking to convert single digit numbers to two-digit numbers like so: 9 ==> 09 5 ==> 05 12 == 12 4 ==> 04 I figure I could put a bunch of if-else statements (if number is under 10, then do a gsub) but figure that's horrible coding. I know Rails has number_with_precision but I see that it only applies to decimal numbers. Any ideas on how to convert single-digits to two-digits?

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• How can you replicate each row of an R data.frame and specify the number of replications for each ro

  - by wkmor1

  df <- data.frame(var1=c('a', 'b', 'c'), var2=c('d', 'e', 'f'), freq=1:3) What is the simplest way to expand the first two columns of the data.frame above, so that each row appears the number of times specified in the column 'freq'? In other words, go from this: >df var1 var2 freq 1 a d 1 2 b e 2 3 c f 3 To this: >df.expanded var1 var2 1 a d 2 b e 3 b e 4 c f 5 c f 6 c f

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• How to determine whether a spread-sheet cell contains a date, or a real number?

  - by Everyone

  When a cell in a spreadsheet contains a simple date (mm/dd/yyyy) the poi API flags the cell-type as 'numeric'. This is probably because spreadsheets ( IMO ) historically recognize only strings and real numbers. It is possible to hard-code the cell-index, and use it conditionally to call 'getDateCellValue'. But this feels like a hack. What other ways are there in the poi API to determine whether the content in a cell is a Date rather than a real number?

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• How can I get the position of rows relative to total number of rows based on a field?

  - by Arms

  I have a scores table that has two fields: user_id score I'm fetching specific rows that match a list of user_id's. How can I determine a rank for each row relative to the total number of rows, based on score? The rows in the result set are not necessarily sequential (the scores will vary widely from one row to the next). I'm not sure if this matters, but user_id is a unique field.

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• C++: how can I test if a number is power of ten?

  - by Helltone

  I want to test if a number double x is a power of 10. I could perhaps use cmath's log10 and then test if x == (int) x?

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• Does the number of rows in mysql table matter?

  - by 1s2a3n4j5e6e7v

  I'm coming up with a web app which will want me to store more than 80 Lakh (8 million) rows. Will it be fine to handle those many number of rows with MySQL without having any performance degradation? Assume my RAM to be 4 GB and Infinity GB Harddisk space. Also, the main fields have been indexed.

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• how to divide a complex number? what is its quotient?

  - by sadia

  how to divide a complex number? what is its quotient? please explain!!

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• How to include the total number of returned rows in the resultset from SELECT T-SQL command?

  - by quarkX

  I would like to ask if there is a way to include the total number of rows, as an additional column, in the returned result sets from a TSQL query using also the Row_Number (SQL 2005) command. For example, getting the results set from a query against Book table in a form similar to this: RowNum BookId BookTitle TotalRows -------------------------------------------- 1 1056 Title1 5 2 1467 Title2 5 3 121 Title3 5 4 1789 Title4 5 5 789 Title5 5

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• How to do number formatting to 1 decimal point in SSRS?

  - by san

  Hi, I have a SSRS report with full of number fields. I would like to have that to be displayed as in one decimal. i tried to use F1. it gives me only one decimal points in html rendering, but in excel exported version it shows 2 decimal points. How can i have just one decimal point both ecxel and html rendering. Please comment. Thanks in advance San

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• Number of occurrences of a substring in an NSString?

  - by igul222

  How can I get the number of times an NSString (for example, @"cake") appears in a larger NSString (for example, @"Cheesecake, apple cake, and cherry pie")? I need to do this on a lot of strings, so whatever method I use would need to be relatively fast. Thanks!

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• Where can I find the IRQ number in request_irq function?

  - by sasayins

  Hi, Im learning device driver programming in Linux. And I'm wondering where I could the IRQ number in the request_irq function. int request_irq (unsigned int irq, void (*handler) (int, void *, struct pt_regs *), unsigned long irqflags, const char *devname, void *dev_id); In the irq parameter, what value or where could I find that value to put in the request_irq function? Thanks

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• A programmatic way to discover the number of CPUs and spec for each CPU/Core in Ubuntu Karmic?

  - by Viet

  A programmatic way to discover the number of CPUs and spec for each CPU/Core in Ubuntu Karmic? Bash or C/C++, Python, Perl are fine. Thanks!

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• How they heck did they do this? Custom number pad.

  - by Joe

  http://itunes.apple.com/us/app/bistromath/id309214622?mt=8 Number pad in second screenshot: So is this some customization of the stock keypad? Modal view?

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• Worst Case number of rotations for BST to AVL algorithm?

  - by spacker_lechuck

  I have a basic algorithm below and I know that the worst case input BST is one that has degenerated to a linked list from inserts to only one side. How would I compute the worst case complexity in terms of number of rotations for this BST to AVL conversion algorithm? IF tree is right heavy { IF tree's right subtree is left heavy { Perform Double Left rotation } ELSE { Perform Single Left rotation } } ELSE IF tree is left heavy { IF tree's left subtree is right heavy { Perform Double Right rotation } ELSE { Perform Single Right rotation } }

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• Is there a function to test if a String variable is a number value?

  - by letseatfood

  Is there a way to test a string, such as the one below to see if it's an actual number value? var theStr:String = '05'; I want to differentiate between the string value above and one such as this: var theStr2:String = 'asdfl'; Thanks!

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• How to print a float number to visual c++ messagebox?

  - by karikari

  I have, a float number. I would like to print it inside a messagebox. How to do it? MessageBox(hWnd, "Result = <float>", L"Error", MB_OK); update: I do this and it prints out chinese characters inside the messagebox. float fp = 2.3333f; sprintf(buffer,"%f",fp); MessageBox(hWnd, LPCWSTR(buffer), L"Error", MB_OK);

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• Why do different versions of Silverlight assemblies have the same version number?

  - by Simon

  Why do different versions of Silverlight assemblies have the same version number? Location: ...\Silverlight\v3.0\System.Core.dll Name: System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e Location: ...\Silverlight\v4.0\System.Core.dll Name: System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e Location: ...\Silverlight\v4.0\Profile\WindowsPhone\System.Core.dll Name: System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e While standard .net has different version numbers Location: ...\Framework\v4.0.30319\System.dll Name: System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Location: ...\Framework\v2.0.50727\System.dll Name: System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089

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• How to increase/decrease current margin at a number by jquery?

  - by Relax

  Given an element with unknown margin-left, how to increase its margin-left at a number say 100px? For example, assuming the original margin-left is 100px, the expected result is 100px + 100px thus 200px finally.

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• how to count number of elements of same value in a matrix?

  - by niko

  Hi, Does anyone know how to count the number of times the value appears in a matrix? For example if we have a 1500 x 1 matrix M (vector) which stores the values of weekdays (1 - 7) and would like to count how many Sundays (1), Mondays(2),... , Saturdays(7) are stored in M? Thank you!

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• How can I find out number of clients subscribed to BlazeDS destination?

  - by Sergey

  Hi all! Is it possible to determine number of clients subscribed to my BlazeDS destination? I need to retrieve this data at the server-side code.

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• Is it possible to read the iPhone phone number out of the settings?

  - by Chrizzz

  I would like to pre-populate a UITextfield with the phone number of the current iPhone device. Can that be done?

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• how to get Serial number from Windows CE ? (not Device ID) in C# ?

  - by Gold

  hi how to get Serial number from Windows CE ? (not Device ID) in C# ? thank's in advance

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• How to get the number of columns from a JDBC Resultset?

  - by Sanoj

  I am using CsvJdbc (it is a JDBC-driver for csv-files) to access a csv-file. I don't know how many columns the csv-file contains. How can I get the number of columns? Is there any JDBC-function for this? I can not find any methods for this in java.sql.Resultset. For acessing the file, I use code similar to the example on the CsvJdbc website.

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• Anyone know how to get the z-index of a div tag that returns the actual number and not 'Auto'?

  - by Derrick

  This gives me auto: I need the number, so I can move one above the other? // Swop div index $("#panel div").each(function(){ alert($(this).css('z-index')); });

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