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• Python - counting sign changes

  - by dadashek

  I have a list of numbers I am reading left to right. Anytime I encounter a sign change when reading the sequence I want to count it. X = [-3,2,7,-4,1,-1,1,6,-1,0,-2,1] X = [-, +, +, -, +, -, +, +, -, -,-,+] So, in this list there are 8 sign changes. When Item [0] (in this case -3) is negative it is considered a sign change. Also, any 0 in the list is considered [-]. Any help would be greatly appreciated.

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• Can primary index be a CHAR in MySQL?

  - by FFish

  My primary indexes are unique reference numbers like 002345 and 000023. If I format them as integers I loose my zero's. They need to be 6 digits. Can I use CHAR? I don't need any auto increments.

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• asp.net phonetic password generator

  - by Pragnesh Patel

  hi i am generating random password. but i want to get phonetic string of the password. Any idea how can i get phonetic string? example : deT3f9y = delta - echo -Tango - number 3 - fox - number 9 - yankee

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• rails solr search limit total search results / get fixed number of results

  - by kLeos

  I'm trying to perform a search, order the results randomly, and only return a number of results, not all matches. Something like limit(2) I've tried using the Solr param 'rows' but that doesn't seem to do anything: @featured_articles = Article.search do with(:is_featured, true) order_by :random adjust_solr_params do |params| params[:rows] = 2 end end @featured_articles.total should be 2, but it returns more than 2 How can I get a randomized fixed number of results?

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• Creating a unique URL safe hash

  - by Ben Foster

  I want to hash/encode a unique integer (database ID) to create a similarly unique string. It needs to meet the following requirements: Must start with a letter or number, and can contain only letters and numbers. All letters in a container name must be lowercase. Must be from 3 through 63 characters long (although the shorter the better) The result does not need to be reversible, just repeatable - so a 1-way hash would be fine.

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• How do I detect shake while movie is playing?

  - by intunejoe

  I have an iphone app where I am able to shake and play a random file with MPMoviePlayerController. But while the Movie Player is on the screen, it is unable to detect a shake. How can I get the Movie Player to detect shakes while playing? Thanks for your help!

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• Decision region plot for neural network in matlab

  - by Taban

  I have a neural network trained with backpropagation algorithm. I also create data set (input and target) random. Now I want to plot a decision region where each region is marked with a red star or with a blue circle according to whether it belongs to class 1 or -1. I searched a lot but just find plotpc function that is for perceptron algorithm. What should I try now? Any link or answer really helps. Thanks

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• Matrix in python

  - by Werner

  Hi, I am very new to Python, I need to read numbers from a file and store them in a matrix like I would do it in fortran or C; for i for j data[i][j][0]=read(0) data[i][j][1]=read(1) data[i][j][2]=read(2) ... ... How can I do the same in Python? I read a bit but got confused with tuples and similar things If you could point me to a similar example it would be great thanks

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• Using shell tools to extract part of a file

  - by user349418

  I've got a text file, and wish to extract every above the !--- comment ---! into a new file, not based line numbers (but checking for the comment), How would I do this? test123 bob ted mouse qwerty !--- comment ---! 123456 098786

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• Android: Any way to auto-pair to another device over Bluetooth without prompting for a pin?

  - by D.

  I am looking for a way to connect to Android devices via Bluetooth without user intervention(assuming at least on device is set to "Discoverable"). Since 2.0, it seems the devices prompt for a random pin to be entered when connecting to each other for the first time. I've tried some Bluetooth projects, but none seem to work as the underlying Bluetooth Adapter code always kicks in. Is there any way around this? Thanks.

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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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• Regex to Exclude Double spaces

  - by Ian

  Hi, I am looking for a regular expression for c# asp.net 3.5 that will fail if there are ever any double spaces in a sentence or group of words. the cat chased the dog = true the cat chased the dog = false (doubles spaces occur at random intervals) thanks

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• SQL Server Query

  - by Scott Jackson

  Hi, I'm trying to do some work with my SQL table. I have 2 buildings with room numbers 1 - 100 in building 1 and 101 - 199 in building 2. I have a location field (which I've just created) and want to run a query to populate it with either 'Building 1' or 'Building 2' depending on which room number it has in the 'Room' field. Many thanks for your help. Regards Scott

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• How to remove commas etc from a matrix in python

  - by robert

  say ive got a matrix that looks like: [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] how can i make it on seperate lines: [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] and then remove commas etc: 0 0 0 0 0 And also to make it blank instead of 0's, so that numbers can be put in later, so in the end it will be like: _ 1 2 _ 1 _ 1 (spaces not underscores) thanks

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• How many times can you randomly generate a GUID before you risk duplicates? (.NET)

  - by SLC

  Mathematically I suppose it's possible that even two random GUIDs generated using the built in method in the .NET framework are identical, but roughly how likely are they to clash if you generate hundreds or thousands? If you generated one for every copy of Windows in the world, would they clash? The reason I ask is because I have a program that creates a lot of objects, and destroys some too, and I am wondering about the likelihood of any of those objects (including the destroyed ones) having identical GUIDs.

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• How to make automated Voice call application in php?

  - by Harish Kurup

  I want to make a automated call application, which will dial some mobile numbers, and give the response to them, and also record there voice in wave and text format. is it possible in PHP, or there is any buildin function or classes for doing that?

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• How do I match and return a zero with a regular expression in javascript?

  - by Hobhouse

  I am trying to extract a number from a string. The number might be zero. Numbers appear like this: '+123', '-8' or '0'. alert( '+123'.match(/[-?|+?]\d+/) ); alerts +123 alert( '-8'.match(/[-?|+?]\d+/) ); alerts -8 alert( '0'.match(/[-?|+?]\d+/) ); alerts null // why oh why? How do I get '0'.match(/[-?|+?]\d+/) to return 0 instead of null?

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• Phone Number Recognition in Javascript

  - by samer

  Hi Guys, Is there a javascript library the can recognize phone numbers in a web page? Just like what skype did on their firefox plugin. Or do you know a way on how to do it? Websites or any tutorial that do the same would be very helpful. Your reply is greatly appreciated. Best,

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• How do I force jquery to center an element when it snaps to another container using the draggable method?

  - by David

  Here's my script. I want some square-shaped draggable objects (in this case just td boxes with numbers in them) to be able to snap to some empty table cells and snap to the center of those cells (empty td boxes), not the top or bottom of those cells, which is what is seems to do by default. <script type="text/javascript"> $(document).ready(function () { $(".inputs div").draggable( { snap: ".spaces" } ); }); </script>

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• How to ANSI-C cast from unisigned int * to char *?

  - by user314290

  I want these two print functions to do the same thing: unsigned int Arraye[] = {0xffff,0xefef,65,66,67,68,69,0}; char Arrage[] = {0xffff,0xefef,65,66,67,68,69,0}; printf("%s", (char*)(2+ Arraye)); printf("%s", (char*)(2+ Arrage)); where Array is an unsigned int. Normally, I would change the type but, the problem is that most of the array is numbers, although the particular section should be printed as ASCII.

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• Reading any radom RSS/ ATOM XML file using PHP

  - by Jean

  Hello, I want to be able to read any random RSS/ATOM XML file. That would mean I would not not know the tags, start the loop and the fields. How do I go about doing it in PHP. Thanks Jean

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• taking integer input in java

  - by ruchir patwa

  I am actually new to java programming and am finding it difficult to take integer input and storing it in variables...i would like it if someone could tell me how to do it or provide with an example like adding two numbers given by the user..

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• how to convert the Interger date format into YYYYMMDD?

  - by ccfenix

  Python and Matlab quite often have integer date representations as follows: 733828.0 733829.0 733832.0 733833.0 733834.0 733835.0 733836.0 733839.0 733840.0 733841.0 these numbers correspond to some dates this year. Do you guys know which function can convert them back to YYYYMMDD format? thanks a million!

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• attachment is not proper in mail in rails

  - by Harsh Raval

  hi, i'm sending a mail with attachment(1.pdf) but in mail it doesnt shows 1.pdf instead it shows some random file named "ATT008220.dat". i'm using Rails 3.0 following is the code i'm using: @file = File.read('c:/1.pdf') @file.force_encoding('BINARY') attachment "application/octet-stream" do |a| a.body = @file end anybody knows why its happening? any idea? Thanks & Regards, Harsh Raval.

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• Is it good practice to use std::size_t all over the place?

  - by dehmann

  I have a lot of constants in my code that are unsigned numbers, e.g. counters, frequency cutoffs, lengths, etc. I started using std::size_t for all of these, instead of int or unsigned int. Is that the right thing to do? I started it because the STL containers use it for their sizes, it's used for string position, etc.

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