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Search found 29841 results on 1194 pages for 'random number generator'.

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• Get number of times in loop over Hash object

  - by Matt Huggins

  I have an object of type Hash that I want to loop over via hash.each do |key, value|. I would like to get the number of times I've been through the loop starting at 1. Is there a method similar to each that provides this (while still providing the hash key/value data), or do I need to create another counter variable to increment within the loop?

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• Regular Expression: Any character that is NOT a letter or number

  - by James Jeffery

  I'm trying to figure out the regular expression that will match any character that is not a letter or a number. So characters such as (,,@,£,() etc ... Once found I want to replace it with a blank space. Any advice.

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• Counting the number of select statements, connections per user in MySQL

  - by Michelangelo

  Hi guys, how can I count the number of connection and queries by user per day? I need a little list of users, previously registered in my MySQL Server, with the total of the queries and connections. For instance: users | Queries user01 | 120000 user02 | 340000 user03 | 1540000 user04 | 1244000 thanks

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• Maximum number of type parameters used in a java class

  - by True Soft

  What is the maximum number of type parameters you used in a java class? Example for 4: class MyClass<A, B, C, D> { }

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• Number of different elements in an array.

  - by AB

  Is it possible to compute the number of different elements in an array in linear time and constant space? Let us say it's an array of long integers, and you can not allocate an array of length sizeof(long). P.S. Not homework, just curious. I've got a book that sort of implies that it is possible.

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• Regex: Using lookahead assertion to check if character exist at most a certain number of times

  - by teggy

  How do I use lookahead assertion to determine if a certain character exist at most a certain number of times in a string. For example, let's say I want to check a string that has at least one character to make sure that it contains "@" at most 2 times. Thanks in advance. Using python if that matters.

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• How do you detect provider based on tracking number

  - by mplacona

  I'm trying to figure out how to detect the mail provider based on it's tracking number. I found this, but it doesn't seem to be definitive or has all of the possible providers. I.e. Royal Mail UK isn't there. Has anyone found any definitive answer to that?

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• PHP - Get number of pages in a Word document

  - by Cory

  Is there a way to count number of pages using PHP for existing Word documents? I appreciate for the help. Thanks

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• Creating a pygtk text field that only accepts number

  - by zfranciscus

  Hi, Does anybody know how to create a text field using PyGTK that only accepts number. I am using Glade to build my UI. Cheers,

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• Why doesn't the difference between two dates give me a whole number of days

  - by ash34

  Hi, Can someone explain this to me. From jconsole ... from = new Date('01/01/2010') Fri Jan 01 2010 00:00:00 GMT-0800 (PST) thru = new Date('06/07/2010') Mon Jun 07 2010 00:00:00 GMT-0700 (PST) (thru - from) / (1000 * 24 * 60 * 60) 156.95833333333334 Why don't I get a whole number of days? How do I calculate the difference between two dates? thanks much.

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• Fixed number of rows In Access Report

  - by Pronek

  Hello All, I am having tried a access 2007 report with fixed numbers of rows (records) per page. For example, I like to fix total number of records (rows) to 10 per page while underlying query might have 5 records in some criteria or 15 records in some case. If any idea, please share me. TIA ProNek

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• Interview Question 101 - Binary Number Interpretation

  - by waves

  Pretend you're at an interview. The interviewer asks: What is the decimal value of this binary number? 10110101 What is the first thing you responsed with?

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• Change a files md5 number using a batch file

  - by Ben Shelock

  I'm a really newbie, so sorry if the title isn't grammatically correct :p Anyway... Can I change a files md5 number using a batch file

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• number of comparisons of binary search

  - by user307496

  What is the total number of comparisons necessary to locate all the n sorted distinct integers in an array using binary search, I think it is nlogn, but I am not sure. What do u guys think?

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• Is 23,148,855,308,184,500 a magic number, or sheer chance?

  - by Roddy

  News reports such as this one indicate that the above number may have arisen as a programming bug. A man in the United States popped out to his local petrol station to buy a pack of cigarettes - only to find his card charged $23,148,855,308,184,500. That is $23 quadrillion (£14 quadrillion) - many times the US national debt.* In hex it's $523DC2E199EBB4 which doesn't appear terribly interesting at first sight. Anyone have any thoughts about what programming error would have caused this?

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• Count the number of files in a directory using python

  - by prosseek

  I need to count the number of files in a directory using Python. I guess the easiest way is len(glob.glob('*')), but I also count the directory as file. Is there any way to count only the files in a directory?

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• How to prefix a positive number with plus sign in PHP

  - by user318466

  I need to design a function to return negative numbers unchanged but should add a + sign at the start of the number if its already no present. Example: Input Output ---------------- +1 +1 1 +1 -1 -1 It will get only numeric input. function formatNum($num) { # something here..perhaps a regex? } This function is going to be called several times in echo/print so the quicker the better.

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• Variable number of arguments in ParamArray ArgList()

  - by Excel VBA guy

  If I want to pass a number of values for the ParamArray arglist via an array, how do I do it? From what I've read so far, on VBA, it appears that I need to explicitly list the values that I want to pass. But what if there are potentially different numbers of values to pass, so I do not know in advance how many I'll want to pass to the function? Is there not some way of using an array (a one-dimensional array) with a variable dimension?

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• magento limiting number of returned items in product collection call

  - by thrice801

  Hi, Im trying to limit the number of returned results manually in a copy of the list.phtml template, but its turning out to be alot harder than I anticipated. Ive tried manually setting the collection size, but ya once again nothing working. Can someone show me how to do this? Would be nmuch appreciated!

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• problem with Double and Rational Number

  - by altair211

  Hi, I am writing a function in which I need to read a string contains floating point number and turn it back to Rational. But When I do toRational (read input :: Double), it will not turn for eg: 0.9 into 9 % 10 as expected, but instead 81..... % 9007... Thx

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• Allow number to start with ZERO when stored in mysql integer field

  - by NetCaster

  I need to store phone numbers starting with 0 but whenever i try to store this in MySql table the starting ZERO is removed because no number start with Zero actually how i can solve this problem please do i need to change the field type from Integer to another type please help

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• PHP regular expression for positive number with 0 or 2 decimal places

  - by Peter

  Hi I am trying to use the following regular expression to check whether a string is a positive number with either zero decimal places, or 2: ^\d+(\.(\d{2}))?$ When I try to match this using preg_match, I get the error: Warning: preg_match(): No ending delimiter '^' found in /Library/WebServer/Documents/lib/forms.php on line 862 What am I doing wrong?

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• Get number of concurrent users online - ASP.NET

  - by Srikanth

  I would like to know the number of users logged into my ASP.NET 2.0 application. Points to be considered: 1) Simplest way would be to use Application or Cache object to have the counts on Session start or end. However this would fail if there is a worker process recycle. Wouldn't it? 2) Should't make a difference whether the session is inproc/state server managed/ or SQL server managed. 3) Should preferably be seamless to a web-farm architecture.

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• round number in JavaScript to N decimal places

  - by Richard

  in JavaScript, the typical way to round a number to N decimal places is something like: function round_number(num, dec) { return Math.round(num * Math.pow(10, dec)) / Math.pow(10, dec); } However this approach will round to a maximum of N decimal places while I want to always round to N decimal places. For example "2.0" would be rounded to "2". Any ideas?

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• Return number of rows affected by SQL UPDATE statement in Java

  - by Krt_Malta

  I'm using a MySQL database and accessing it through Java. PreparedStatement prep1 = this.connection.prepareStatement("UPDATE user_table SET Level = 'Super' WHERE Username = ?"); prep1.setString(1, username); The update statement above works fine however I'd like to get the number of rows affected with this statement. Is this possible please?

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