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• Looking for advice on how to do some bit-twiddling [closed]

  - by davit-datuashvili

  hi everybody fisrt of all this is not homework and now question is like this suppose i have array int a[]=new int[]{0xBCDA,0xABFE,0xBCAD,0xEFCA,0xFFCA} i know that there is always some hexadecimal number which occurs in all number or in this case A is repeat in array everywhere so my aim is print only repeat number and other numbers should be zero so my new array should be like this 0x000A, 0xA000,0x00A0 0x000A,0x000A any idea please help me? p.s please nobody say that this is homework

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• SQL Substring and Last index of

  - by maxt3r

  Hi, i've got stuck with substring. On input i've got a string that looks like Sometext (123456). Those digits at the end are random. I need to get only text from that string.

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• sorting array after array_count_values

  - by umermalik

  hi to all! I have an array of products $products = array_count_values($products); now I have an array where $key is product number and $value is how many times I have such a product in the array. I want to sort this new array that product with the least "duplicates" are on the first place, but what ever I use (rsort, krsort,..) i loose product numbers (key). any suggestions? thanks.

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• JQuery. Layout is shaking during animation

  - by Andrew Florko

  Hello everybody, JQuery accordion animation (as well as simple hides / shows) looks weird with some browsers (IE, Opera). But Fire Fox and Chrome renders animation perfectly without artifacts. Html layout tends to shake with IE / Opera during animation as if surrounding paddings / margins are changed for small random value. How can I minimize this effect. Is it jquery bug or browsers issue?

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• Converting a const char* into a double

  - by Koning Baard

  I am trying to convert a const char* to a double precision floating point number: int main(const int argc, const char *argv[]) { int i; double numbers[argc - 1]; for(i = 1; i < argc, i += 1) { /* -- Convert each argv into a double and put it in `number` */ } /* ... */ return 0; } Can anyone help me? Thanks

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• How to convert a one column integer data file into a mask for image

  - by gavishna

  I have a data file which contains integers say in range 0-255 containing about 1000 integers which are random in nature.I want to use that as a mask or to multiply an image which is in RGb and another image which is in gray format. HOw do i go about this, how do i convert/represent this data file in matrix format of image dimension ?Kindly suggest. also is it possible to obtain a 3D histogram?

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• Scrum and motivation

  - by zachary

  How can you stop the dev team from padding their numbers when it comes to creating task times? How is there any motivation for them to do their work if there are no real deadlines and they are just measured against their velocity. Get the job done by this deadline vs Get the job done whenever we will reduce scope, quality or increase resources

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• Can the .NET MethodInfo cache be cleared or disabled?

  - by Anton

  Per MSDN, calling Type.GetMethods() stores reflected method information in a MemberInfo cache so the expensive operation doesn't have to be performed again. I have an application that scans assemblies/types, looking for methods that match a given specification. The problem is that memory consumption increases significantly (especially with large numbers of referenced assemblies) since .NET hangs onto the method metadata. Is there any way to clear or disable this MemberInfo cache?

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• C# - Fast and simple multi dimensional data structures?

  - by Jeremy Rudd

  I need to store multi-dimensional data consisting of numbers in a manner thats easy to work with. I'm capturing data in real time, and once processed I would destroy and GC older data. This data structure must be fast so it won't hit my overall app performance. The faster the better. What are my choices in terms of platform supported data structures? I'm using VS 2010. and .NET 4.

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• O(log n) algorithm for merging lists and computing rank?

  - by Eternal Learner

  Given two sorted lists, each containing n real numbers, is there a O(log?n) time algorithm to compute the element of rank i (where i coresponds to index in increasing order) in the union of the two lists, assuming the elements of the two lists are distinct? I can think of using a Merge procedure to merge the 2 lists and then find the A[i] element in constant time. But the Merge would take O(n) time. How do we solve it in O(log n) time?

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• why adding a simple div to HAML will break the code?

  - by Jian Lin

  it is quite strange that the following works: - 1.upto(30) do |i| = i %br but the following won't: %div this line - 1.upto(30) do |i| = i %br Isn't the second part just to add a div and let the numbers go into that div?

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• Reading a large text file to memory in C++

  - by NoneType

  Is there a way to read a large text file (~60MB) into memory at once (like a compiler flag to increase program memory limit) ? Currently, ofstream's open function throws a segmentation fault while trying to read this file. ifstream fis; fis.open("my_large_file.txt"); // Segfaults here The file just consists of rows of the form number_1<tabspace>number_2 i.e., two numbers separated by a tabspace.

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• Programmatically confirm the existence of a mobile number

  - by Olaseni

  How do I confirm that a phone number is legit, or that it is connected? I want to prevent users signing up with bogus numbers. Is there a way to programmatically make a call or something? Or find out if the phone is alive, connected?

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• Regex Help with manipulating string

  - by user310070

  Hi, i am seriously struggling to get my head around regex. I have a sring with "iPhone: 52.973053,-0.021447" i want to extract the two numbers after the colon into two seperate strings so delimited by the comma. Can anyone help me? Cheers

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• How can I prevent spam through a calculation?

  - by ricky roy

  I have a contact form written in PHP that currently has a form field that tries to prevent spam through a calculation (3 + 1). I need that form field to have multiple calculations and at random so prevent spam.

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• Why this jquery plugin giving error in IE but working fine in firefox?

  - by metal-gear-solid

  This page work in Firefox but not in IE7 http://www.robwalshonline.com/demos/randomImageDemo/randomImage_plugin.html This is page of plugin http://www.robwalshonline.com/posts/jquery-plugin-random-image-on-page-load/ How to get this work in all browser FF, safari, chrome and IE 6, 7 ,8

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• jQuery - How do I convert a pixel value (20px) to a number value (20)

  - by John Himmelman

  I know jQuery has a helper method for parsing unit strings into numbers. What is the jQuery method to do this? var a = "20px"; var b = 20; var c = $.parseMethod(a) + b;

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• Easiest way to choose a percentage of an amount of rows from a MySQL table?

  - by Rob

  I have a script that has a GET variable: $_GET['percentage'] I have a MySQL table of data. Now lets say that there are 100 rows of data in this table. In pseudo-code: SELECT data FROM table Now would it be possible to select $_GET['percentage'] of random data from table? For example (again in pseudo-code): $_GET['percentage'] = 10; SELECT 10% of data from table order by rand() If this IS possible, how could I do it?

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• Will running the same script multiple times with a rand() call return different values?

  - by aamir Fayyaz

  I have a script that calls the rand function: <?php echo rand(0, 9); ?> If I run this script multiple times, will I get different numbers out, or will it always be the same? In other words, does PHP seed rand automatically?

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• Extracting character range form longline with sed or awk or grep?

  - by rufus28

  So i have a 1 long line with characters, for example numbers[1-1024] in one line(no "\n", "\t" and "\b"): 1 2 3 4 5 6 7 8 9 10 11 ... 1024 How do i extract and print characters for example exactly 55 characters after 46? So output would be: 47 48 49 ... 101 Thanks.

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• What operating system do you use for development?

  - by yar

  Minor version numbers notwithstanding, what OS do you use for your own development machine? Are you forced to use a virtual appliance or server to run any programs that you need? Do you know of any surveys related to this question?

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• how to save current state of application

  - by medma

  hi, I am making an iphone application in which after login we will go through some steps and then finally we make a call from within the app. As we know on making call our app quits so plz suggest me how to resume that state on relaunching the app? 1-login 2-some steps 3-list of numbers 4-call Any help will be appreciated. Thanx..

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• grep pipe with sed

  - by 123Ex

  hi, This is my bash command grep -rl "System.out.print" Project1/ | xargs -I{} grep -H -n "System.out.print" {} | cut -f-2 -d: | sed "s/\(.*\):\(.*\)/filename is \1 and line number is \2/ What I'm trying to do here is,I'm trying to iterate through sub folders and check what files contains "System.out.print" (using grep) using 2nd grep trying to get file names and line numbers using sed command I display those to console. from here I want to remove "System.out.print" with "XXXXX" how I can pipe sed command to this? pls help me thanxx

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• JavaScript regular expressions to validate string

  - by Activist

  I'm not that good with regular expressions... I need a JavaScript regular expression that will do the following: The string can contain letters (upper and lower case), but not punctuations such as éàïç... The string can contain numbers (0..9) anywhere in the string, except on the first position. The string can contain underscores (_). Valid strings: foo foo1 foo_bar fooBar Invalid strings: 1foo -- number as first character foo bar -- space föo -- punctuation ö Many thanks!

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• Trouble with arrays

  - by Ockonal

  Hi guys, I have such string in PHP: $data = '1;3;5;7;9'; And cycle: for ($i=0; $i < count($someArray); $i++) { // If $i == any number in $data } What is the faster way to compare $i from cycle with numbers in string. I have to check that cycle-counter is in string.

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