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• Equivalent of LaTeX's \label and \ref in HTML.

  - by dreeves

  I have an FAQ in HTML (example) in which the questions refer to each other a lot. That means whenever we insert/delete/rearrange the questions, the numbering changes. LaTeX solves this very elegantly with \label and \ref -- you give items simple tags and LaTeX worries about converting to numbers in the final document. How do people deal with that in HTML? ADDED: Note that this is no problem if you don't have to actually refer to items by number, in which case you can set a tag with <a name="foo"> and then link to it with <a href="#foo">some non-numerical way to refer to foo</a>. But I'm assuming "foo" has some auto-generated number, say from an <ol> list, and I want to use that number to refer to and link to it.

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• Minimizing the number of boxes that cover a given set of intervals

  - by fortran

  Hi, this is a question for the algorithms gurus out there :-) Let S be a set of intervals of the natural numbers that might overlap and b a box size. Assume that for each interval, the range is strictly less than b. I want to find the minimum set of intervals of size b (let's call it M) so all the intervals in S are contained in the intervals of M. Trivial example: S = {[1..4], [2..7], [3..5], [8..15], [9..13]} b = 10 M = {[1..10], [8..18]} // so ([1..4], [2..7], [3..5]) are inside [1..10] and ([8..15], [9..13]) are inside [8..18] I think a greedy algorithm might not work always, so if anybody knows of a solution of this problem (or a similar one that can be converted into), that would be great. Thanks!

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• can lapply not modify variables in a higher scope

  - by stevejb

  I often want to do essentially the following: mat <- matrix(0,nrow=10,ncol=1) lapply(1:10, function(i) { mat[i,] <- rnorm(1,mean=i)}) But, I would expect that mat would have 10 random numbers in it, but rather it has 0. (I am not worried about the rnorm part. Clearly there is a right way to do that. I am worry about affecting mat from within an anonymous function of lapply) Can I not affect matrix mat from inside lapply? Why not? Is there a scoping rule of R that is blocking this?

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• Using PIG with Hadoop, how do I regex match parts of text with an unknown number of groups?

  - by lmonson

  I'm using Amazon's elastic map reduce. I have log files that look something like this random text foo="1" more random text foo="2" more text noise foo="1" blah blah blah foo="1" blah blah foo="3" blah blah foo="4" ... How can I write a pig expression to pick out all the numbers in the 'foo' expressions? I prefer tuples that look something like this: (1,2) (1) (1,3,4) I've tried the following: TUPLES = foreach LINES generate FLATTEN(EXTRACT(line,'foo="([0-9]+)"')); But this yields only the first match in each line: (1) (1) (1)

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• Date format strings in .Net and Java

  - by mizipzor

  I have an application that runs on both C# .Net and Java. Two entirely separate but identical code bases. The problem Im having is formatting date and numbers. For example: A user running the .Net variant is inputting a date and a format string. The 26th of April 1986 is formatted 1986-04-26. The actual date, along with the format string, is serialized to an XML file. Later another user running the Java variant opens said XML file and looks at the date. I want them to look the same. Whats the best approach here? There doesnt seem to be a one-to-one mapping between Java and .Nets format strings. Should I limit the possible formats to a selection I know I can represent fully in both .Net and Java?

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• Include code in ASP.net

  - by Tom Gullen

  I've got an ASP.net file, and I'm trying to include dynamic code which was easy in classic ASP. Here is what I have tried so far: <%@ Register TagPrefix="TagPre" TagName="header" Src="alg/classes.aspx"%> and <!--#include file="alg/classes.aspx"--> But neither of these seem to work. The content of classes.aspx is: <script runat="server"> ' Square class Public Class square Public sqRows As Integer 'Numbers of rows this square has Public sqCols As Integer 'Number of columns this square has Public sqArray(,) As Integer 'The square array ' Initialise square array to match size of canvas Public Sub initSqArray(ByVal canvCols, ByVal canvRows) ReDim sqArray(canvCols, canvRows) sqRows = canvRows sqCols = canvCols End Sub End Class Thanks for any help!

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• View a git diff-tree in a reasonable format

  - by Josh

  Howdy, I'm about to do a git svn dcommit to our svn repo -- and as is recommended in a number of places, I wanted to figure out exactly what I was going to be committing with a dry run. As such I ran: git svn dcommit -n This produced output: Committing to http://somerepo/svn/branches/somebranch diff-tree 1b937dacb302908602caedf1798171fb1b7afc81~1 1b937dacb302908602caedf1798171fb1b7afc81 How do I view this in a format that I can consume as a human? A list of modified files comes to mind. This is probably easy, but running git diff-tree on those hashes gives me a reference to a directory and a some other hashes, as well as some numbers. Not quite sure what to make of it. Thanks very much, Josh

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• Determine Click-thru Percentage With PHP

  - by Lea

  Hi all, I am currently working on a small sponsorship application(PHP/MySql) for my personal blog, and am almost finish, but I am stuck on how to calculate the click-thru rate of my sponsors campaigns. I was always terrible with working out percentages, so any practical help would be appreciated. The data is stored in the DB as simple numbers.. So as expected, when a page refreshes, or a sponsors ad is clicked, the data updates with an incrementation of 1. So using these values...say $clicks and $impressions, how would I determine the click-thru rate? What would be the sum I would use to calculate? An example function would really be appreciated. Kind Regards, Lea

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• php / mysql pagination

  - by arrgggg

  Hi, I have a table with 58 records in mysql database. I was able to connect to my database and retrive all records and made 5 pages with links to view each pages using php script. webpage will look like this: name number john 1232343456 tony 9878768544 jack 3454562345 joe 1232343456 jane 2343454567 andy 2344560987 marcy 9873459876 sean 8374623534 mark 9898787675 nancy 8374650493 1 2 3 4 5 that's the first page of 58 records and those 5 numbers at bottom are links to each page that will display next 10 records. I got all that. but what I want to do is display the links in this way: 1-10 11-20 21-30 31-40 41-50 51-58 note: since i have 58 records, last link will display upto 58, instead of 60. Since I used the loop to create this link, depending on how many records i have, the link will change according to the number of records in my table. How can i do this? Thanks.

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• Can mod_rewrite do math?

  - by ewall

  I am planning to convert my website to a new CMS, but I would like to use mod_rewrite to seamlessly redirect old links to their new locations. The catch is that my new blog will not have the same article numbers as the old, because I'll import some older blog entries in their first. Thus, my mod_rewrite would need to take a URL like old.php?article=125, do the addition to figure out the new article number (say +200, for this example), and redirect to new.php?i=325. Can mod_rewrite do the addition on its own, or am I going to need some kind of 'helper' script to do that?

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• keep duplicate number records only - perl

  - by manu

  Hello I have one text string which is having some duplicate characters (FFGGHHJKL), these can be made unique by using the positive lookahead [perl script for the same$ perl -pe 's/(.)(?=.*?\1)//g']. (FFEEDDCCGG OUTPUT == FEDCG) My question is how to make it work on the numbers (Ex. 212 212 43 43 5689 6689 5689 71 81 === output should be 212 43 5689 6689 71 81) ? Also if we want to have only duplicate records to be given as the output from a file having n rows (212 212 43 43 5689 6689 5689 71 81 \n 66 66 67 68 69 69 69 71 71 52 ..\n .. .. \n... OUTPUT == 212 212 43 43 5689 5689 \n 66 66 69 69 69 71 71) then what should be done ? Thanks and regards -manu

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• C - how to get fscanf() to determine whether what it read is only digits, and no characters

  - by hatorade

  Imagine I have a csv with and each value is an integer. so the first value is the INTEGER 100. I want fscanf() to read this line, and either tell me it's an integer ONLY, or not. So, it would pass 100 but fail on 100t. What i've been trying to get work is "%d," where the comma is the delimiter of my CSV. so the whole function is fscanf(fp, "%d,", &count) Unfortunately, this fails to fail on '100t,' works on '100' and works on 't'. so it just isn't distinguishing between 100 and 100t (all of these numbers are followed by commas, of course

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• php nl2br limit x amount

  - by Joshua Anderson

  Hi this is fairly simple I want to know how to use nl2br(); in php, but limit the amount of <br/>'s that are allowed at one time. //For Example: A user enters hi Im a jerk and made 16 more lines. or I could make as many as i want Is there anyway to have php limit the <br/>'s to no more than x amount of numbers at at time so if we only allowed 4 <br>'s at a time the output would be hi Im a jerk I tried to make 9 lines and it made it 4

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• SMS Gateway Devices

  - by u07ch

  Can anyone recommend a good SMS Gateway device that sends and receives messages and has a reasonable API. We are looking for a hardware device that a Sim Card and works with Windows / .Net. I am working with about 50 different countries (Right now 50 will only become more in the future) and dealing with that many SMS suppliers and their various methods for billing and sending / responding to messages is proving unmanageable. It may be much easier to have a single method and call it by country. We do bulk send messages but from the logs this is at most 500 messages at a time (though it could be up-to about 1500 at a time) - mostly its small numbers far less than 500 messages. Ideally would like to get message delivery data and error handling type messages back from the device. I am not interested in a hosted solution unless it has the ability to receive a message to a local number in EVERY country.

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• searching between dates in MYSQL in this format 03/17/10.11:22:45

  - by Kelso

  I have a script that automatically populates a mysql database with data every hour. It populates the date field like 03/17/10.12:34:11 and so on. I'm working on pulling data based on 1 day at a time from a search script. If i use select * from call_logs where call_initiated between '03/17/10.12:00:00' and '03/17/10.13:00:00' it works, but when I try to add the rest of the search params, it ignores the call_initiated field. select * from call_logs where caller_dn='2x9xxx0000' OR called_dn='2x9xxx0000' AND call_initiated between '03/17/10.12:00:00' and '03/17/10.13:00:00' ^-- I x'd out a couple of the numbers. I've also tried without the between function, and used = <= to pull the records, but have the same results. Im sure its an oversight, thanks in advance.

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• how to apply Discrete wavelet transform on image

  - by abuasis

  I am implementing an android application that will verify signature images , decided to go with the Discrete wavelet transform method (symmlet-8) the method requires to apply the discrete wavelet transform and separate the image using low-pass and high-pass filter and retrieve the wavelet transform coefficients. the equations show notations that I cant understand thus can't do the math easily , also didn't know how to apply low-pass and high-pass filters to my x and y points. is there any tutorial that shows you how to apply the discrete wavelet transform to my image easily that breaks it out in numbers? thanks alot in advance.

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• Can MYSQL filter by date if date is stored as text? ex "02/10/1984"

  - by Roeland

  Hello! I am trying to modify an app for a client which has already a database of over 1000 items. The dates are stored as text in the database with the format "02/10/1984". The system allows you to add and remove fields to the catalog dynamically and it also allows the advanced search to have specific fields be allowed. The problem is that it wasn't designed with dates in mind, so when I set a field as a date, and try to search by a range the query is trying to do a AND (cfv0.value = 01/02/2004 AND cfv0.value <= 05/03/2008) . I can make it so the date range passed is a numeric time value. Is there a way that when sending the query, it takes the text fields (with the date) and converts it to numeric time value so at that point I am basically just comparing numbers which would work fine. I do not have the option to change all the current date to numeric value due to the way the dynamic fields are set up. Thanks guys!

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• JavaScript distributed computing project

  - by Ben L.

  I made a website that does absolutely nothing, and I've proven to myself that people like to stay there - I've already logged 11+ hours worth of cumulative time on the page. My question is whether it would be possible (or practical) to use the website as a distributed computing site. My first impulse was to find out if there were any JavaScript distributed computing projects already active, so that I could put a piece of code on the page and be done. Unfortunately, all I could find was a big list of websites that thought it might be a cool idea. I'm thinking that I might want to start with something like integer factorization - in this case, RSA numbers. It would be easy for the server to check if an answer was correct (simply test for modulus equals zero), and also easy to implement. Is my idea feasible? Is there already a project out there that I can use?

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• NSNumberFormatter and 'th' 'st' 'nd' 'rd' (ordinal) number endings

  - by jan

  Is there a way to use NSNumberFormatter to get the 'th' 'st' 'nd' 'rd' number endings? EDIT: Looks like it does not exist. Here's what I'm using. +(NSString*)ordinalNumberFormat:(NSInteger)num{ NSString *ending; int ones = num % 10; int tens = floor(num / 10); tens = tens % 10; if(tens == 1){ ending = @"th"; }else { switch (ones) { case 1: ending = @"st"; break; case 2: ending = @"nd"; break; case 3: ending = @"rd"; break; default: ending = @"th"; break; } } return [NSString stringWithFormat:@"%d%@", num, ending]; } Adapted from nickf's answer here http://stackoverflow.com/questions/69262/is-there-an-easy-way-in-net-to-get-st-nd-rd-and-th-endings-for-numbers

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• Why doesn't an octal literal as a string cast to a number?

  - by Andy E

  In JavaScript, why does an octal number string cast as a decimal number? I can cast a hex literal string using Number() or +, why not an octal? For instance: 1000 === +"1000" // -> true 0xFF === +"0xFF" // -> true 0100 === +"0100" // -> false - +"0100" gives 100, not 64 I know I can parse with parseInt("0100" [, 8]), but I'd like to know why casting doesn't work like it does with hex and dec numbers. Also, does anyone know why octal literals are dropped from ECMAScript 5th Edition in strict mode?

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• git: programmatically know by how much the branch is ahead/behind a remote branch

  - by Olivier

  I would like to extract the information that is printed after a github status, which looks like: # On branch master # Your branch is ahead of 'origin/master' by 2 commits. Of course I can parse the output of git status but this is not recommended since this human readable output is liable to change. There are two problems: How to know the remote tracked branch? It is often origin/branch but need not be. How to get the numbers? How to know whether it is ahead/behind? By how many commits? And what about the diverged branch case?

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• CODE1 at SPOJ - cannot solve it

  - by VaioIsBorn

  I am trying to solve the problem Secret Code on SPOJ, and it's obviously a math problem. The full problem For those who are lazy to go and read, it's like this: a0, a1, a2, ..., an - sequence of N numbers B - a Complex Number (has both real and imaginary components) X = a0 + a1*B + a2*(B^2) + a3*(B^3) + ... + an*(B^n) So if you are given B and X, you should find a0, a1, ..an. I don't know how or where to start, because not even N is known, just X and B. The problem is not as easy as expressing a number in a base B, because B is a complex number. How can it be solved?

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• Generating C++ BackTraces in OS/X (10.5.7)

  - by phillipwei

  I've been utilizing backtrace and backtrace_symbols to generate programmatic stack traces for the purposes of logging/diagnosis. It seems to roughly work, however, I'm getting a little bit of mangling and there are no accompanying file/line numbers associated with each function invocation (as I'd expect within a gdb bt call or something). Here's an example: 1 leonardo 0x00006989 _ZN9ExceptionC2E13ExceptionType + 111 2 leonardo 0x00006a20 _ZN9ExceptionC1E13ExceptionType + 24 3 leonardo 0x0000ab64 _ZN5Rules11ApplyActionER16ApplicableActionR9GameState + 1060 4 leonardo 0x0000ed15 _ZN9Simulator8SimulateEv + 2179 5 leonardo 0x0000eec9 _ZN9Simulator8SimulateEi + 37 6 leonardo 0x00009729 main + 45 7 leonardo 0x000025c6 start + 54 Anything I'm missing something, doing something silly, or is this all I can expect out of backtrace on OS/X? Some other tidbits: I don't see a rdynamic link option for the g++ version (4.0.1) I'm using. -g/-g3 doesn't make any difference. abi::__cxa__demangle doesn't seem to do anything

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• How to suppress a group header based on running-count results?

  - by Sarah

  Hi I'm trying to suppress a group header when there are no detailed results in another following group. I have added a manual running count total which is showing correct numbers (such as 0 when no records show on the report). I've taken this approach since I have various items suppressed within the detailed section and don't want them as part of the count. I'm trying to say in the header not to shown the header if there are no corresponding records showing in the detailed section. But, it's not working. When I say suppress if the display count is 0, it suppresses all of the headers instead of just the ones that need to be displayed. HOW CAN I FIX THIS? THANKS... Sarah

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• Best method to compress JSON string in term of performance and compress radio

  - by Eric Yin

  For a JSON string, contains all kinds of settings, numbers, string etc. Total JSON string fairly fall into 10k~50K range. I want to compress it before save to database. So I wonder which compress method should I choose, I am using c# 4, I know I can choose gzip and deflate but the compression radio is not good (although speed is good). More specific, compress can be a little slow (since only once) but should be small. Decompress should be lighting fast since decompress happens lots. Please give some advice.

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