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  • Is it possible to have variable find conditions for both the key and value?

    - by DarrenD
    I'm trying to pass in both the field and the value in a find call: @employee = Employee.find(:all, :conditions => [ '? = ?', params[:key], params[:value].to_i) The output is SELECT * FROM `employees` WHERE ('is_manager' = 1) Which returns no results, however when I try this directly in mysqsl using the same call without the '' around is_manager, it works fine. How do I convert my params[:key] value to a symbol so that the resulting SQL call looks like: SELECT * FROM `employees` WHERE (is_manager = 1) Thanks, D

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  • Counting number of values between interval

    - by calccrypto
    Is there any efficient way in python to count the times an array of numbers is between certain intervals? the number of intervals i will be using may get quite large like: mylist = [4,4,1,18,2,15,6,14,2,16,2,17,12,3,12,4,15,5,17] some function(mylist, startpoints): # startpoints = [0,10,20] count values in range [0,9] count values in range [10-19] output = [9,10]

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  • javascript url parsing

    - by Ra
    Hi, I have a url like http://mywebsite.com/folder1/folder2/index how to parse this above url and get all the values separately? I want the output like http, mywebsite.com, folder1, folder2, index Thanks in adavance

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  • Command prompt in debug mode for Eclipse? (OpenCV + Eclipse + Win7)

    - by Tony
    I am a beginner for Eclipse. I now have Eclipse C/C++ IDE with OpenCV library running on Windows 7. So far it works after spending hours trying to get it running. But then I realize that Eclipse does not pop up a command prompt as VS2010 does while debugging. And moreover Eclipse's debug mode is just stuck in there and refuse to output anything. But if the code doesn't involve the OpenCV things it works again. Below is the code I use for testing. It captures images from webcam and output it to the screen. The infinite loop (until you press 'q') makes sure it constantly grabs new inputs from the camera. I browsed through the workspace and run the exe just compiled and it worked flawlessly. So I don't think there's anything wrong in the code (it's an example code anyway In brief, can I just pop up a command prompt window in debug mode? And why is Eclipse console stuck when the code involves some OpenCV functions? #include <stdio.h> #include <stdlib.h> #include <tchar.h> #include <cv.h> #include <cxcore.h> #include <highgui.h> #include <iostream> int _tmain(int argc, _TCHAR* argv[]) { CvCapture *capture = 0; IplImage *frame = 0; int key = 0; /* initialize camera */ capture = cvCaptureFromCAM( 0 ); /* always check */ if ( !capture ) { printf("Cannot open initialize webcam!\n"); return 1; } /* create a window for the video */ cvNamedWindow( "result", CV_WINDOW_AUTOSIZE ); while( key != 'q' ) { /* get a frame */ frame = cvQueryFrame( capture ); /* always check */ if( !frame ) break; /* display current frame */ cvShowImage( "result", frame ); /* exit if user press 'q' */ key = cvWaitKey( 1 ); } /* free memory */ cvDestroyWindow( "result" ); cvReleaseCapture( &capture ); return 0; }

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  • Retrieving the value of a concatenated variable within a Java FOR loop

    - by Rajat
    I have been using this "logic" in C++ and VB with success, but am tied up in Java... Simply put, public void DataProviderExample(String user, String pwd, String no_of_links, String link1, String link2, String link3) { for (int i=1;i<=no_of_links;i++) { String link = "link"+i; System.out.println(link); } Now, if the variables link1, link2 and link3 have a value of "X", "Y" and "Z" respectively, upon running this program, I get the following output - link1 link2 link3 What I want is - X Y Z Any ideas?

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  • Replace all URL unless it is allowed

    - by ratamaster
    I had a regex that replaced all URLs from a given string: my_string = "www.example.com test www.mysite.com" my_string.gsub!(/[a-zA-Z0-9\-\.]+\.(com|net|de|org|uk|biz|info|co.uk|es|de)(\/\S*)?/i,'(site hidden)') As a result of the above I get: "(site hidden) test (site hidden)" How could I change the regex to not replace www.mysite.com ??? It means that the replace should output "(site hidden) test www.mysite.com" Thanks !

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  • Finding Links on a Webpage with Java

    - by alan
    Using Java have the source code of a webpage stored in a string. I want to extract all the urls in the source code and output them. I am awful with regex and the like and have no idea how to even approach this. Any help would be greatly appreciated.

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  • regex help using repreated groups

    - by Chris H
    I'm trying to match rc-update -s output in python. m = re.match(r"^\s*(\w+)\s*\|{\s*(\w+)\s*}*$", " network | level1 level2 leveln ") but m is always None the hard part for me is getting the regex to match the n levels. I thought that using {}* would match the n levels, but as soon as I add the {} nothing matches. thanks.

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  • Setting end-of-line character for puts

    - by Dom De Felice
    I have an array of entries I would like to print. Being arr the array, I used just to write: puts arr Then I needed to use the DOS format end-of-line: \r\n, so I wrote: arr.each { |e| print "#{e}\r\n" } This works correctly, but I would like to know if there is a way to specify what end-of-line format to use so that I could write something like: $eol = "\r\n" puts arr UPDATE I know that puts will use the correct line-endings depending on the platform it is run on, but I need this because I will write the output to a file.

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  • How do I remove database name from SQL Server generated script?

    - by bucha
    Anytime I use 'script table as' - 'Insert To' (or other command), the script generated automatically places the database name in the script. Such as: INSERT INTO [DatabaseName].[dbo].[tblToBeInserted] ... While not a huge problem to just delete it, it has slipped by a few times and the script breaks if run on a different server with a different database name but has the same schema. (Such as running on [DatabaseName.Test]) Is there an option I can change, or can I modify the output in any way to remove this?

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  • Calculate QuaterlyHour from Given two DateTimes in c#

    - by user281947
    I want to calculate the quarter Hour from the given two datetimes: Suppose datetime1 and datetime2 , i am doing somewhat like this : int d = datetime2.Subtract(datetime1).Hours; double l = Math.Round(Convert.ToDouble(d/4)); but if the QuarterHour is 3 (ie d=3), whats the good way to show the output- should it be zero or the round one : 3/4 = 0.75. so should i round up to 1 or 0 is ok. And if round up to 1..how should i?

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  • related to java file handling.

    - by sadia
    In Java how can I take the data of my file on my display screen? I want to use data in my file and also want that data to be displayed on my output screen when I execute my program. Can any body please help by providing me such example in Java language. Thank you!

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  • Implement "tail -f" in C++

    - by Hamming
    Hi! I want to create a small code in C++ with the same functionality as "tail-f": watch for new lines in a text file and show them in the standard output. The idea is to have a thread that monitors the file Is there an easy way to do it without opening and closing the file each time?

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  • SSRS 2008 Grouping With Header VS2008

    - by Kevin
    I have a table with the following columns and data Category Item Price Tax A I1 1.00 .01 A I2 2.22 .02 B I3 3.33 0.3 I want to group on Category and have the details below such as: Category/Item Price Tax A I1 1.00 .01 I2 2.22 .02 B I3 3.33 .03 I want the category to have its own row then the detail rows below with the item in the same column as the Category. The output that is desired is: Category - Item | Price | Tax A | | I1 | 1.00 | .01 I2 | 2.22 | .02 B | | I3 | 3.33 | .03

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  • dealing with a large flat data files with a very big record length

    - by gsp
    I have a large data file that is creatd from a shell script. Next script processes it by sorting and reading several times, that takes more than 14 hours, it is not viable. I want to replace this long running script with a program, probably in JAVA, C, or COBOl, that can run on windows or on sun solaris. I have to read a group of records everytime, sort and process and write to the output sort file and at the same time insert into db2/sql tables.

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  • Difference between "and" and "where" in joins

    - by Midhat
    Whats the difference between SELECT DISTINCT field1 FROM table1 cd JOIN table2 ON cd.Company = table2.Name and table2.Id IN (2728) and SELECT DISTINCT field1 FROM table1 cd JOIN table2 ON cd.Company = table2.Name where table2.Id IN (2728) both return the same result and both have the same explain output

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  • How to merge multiple arrays in pairs

    - by user3688059
    I have a problem with "pairing" arrays into one (by index). Here is an example: INPUT: inputArray = [ [0, 1, 2, 3, 4], [2, 3, 5, 7, 8], [9, 6, 1] ] OUTPUT: outputArray = [ [0,2,9], [1,3,6], [2,5,1], [3,7,chooseRandom()], [4,8,chooseRandom()]] Questions: 1) How to avoid out of range problem 2) How to write chooseRandom() to choose N neighbour I'm using python but feel free to share your thoughts in any language.

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  • MySQL greatest value in row?

    - by noryb009
    Hi! I'm using MySQL with PHP. This is like my table: (I'm using 3 values, but there are more) id | 1 | 2 | 3 1 | 3 |12 |-29 2 | 5 |8 |8 3 | 99|7 |NULL I need to get the greatest value in a certain row. If should get: (id - output) (1 - 2), (2-2), (3-1). Is there any queries for this? I've been trying, but I can't get it to work right.

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