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Search found 761 results on 31 pages for 'tail'.

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• C++0x: How can I access variadic tuple members by index at runtime?

  - by nonoitall

  I have written the following basic Tuple template: template <typename... T> class Tuple; template <uintptr_t N, typename... T> struct TupleIndexer; template <typename Head, typename... Tail> class Tuple<Head, Tail...> : public Tuple<Tail...> { private: Head element; public: template <uintptr_t…

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• How to start a cmd window and issue tail request in a bat file?

  - by Kari

  I can open a cmd window and start a tail by entering something like this: tail -f C:\Oracle\WebCenter\Sites\11gR1\Sites\11.1.1.6.1\logs\sites.log This is probably a stupid question, but how do I do this in a batch file? It should be easy but it's not working - I have tried a couple variations and no success. Can anyone tell me what I am doing…

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• tail recursion vs. forward recursion

  - by REALFREE

  Can someone give me the difference between these two kinds recursions and example? specifically in ocaml. Thanks

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• What's some simple F# code that generates the .tail IL instruction?

  - by kld2010

  I'd like to see the .tail IL instruction, but the simple recursive functions using tail calls that I've been writing are apparently optimized into loops. I'm actually guessing on this, as I'm not entirely sure what a loop looks like in Reflector. I definitely don't see any .tail opcodes though. I have "Generate tail calls" checked in my…

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• Tailing 'Jobs' with Perl under mod_perl

  - by Matthew

  Hi everyone, I've got this project running under mod_perl shows some information on a host. On this page is a text box with a dropdown that allows users to ping/nslookup/traceroute the host. The output is shown in the text box like a tail -f. It works great under CGI. When the user requests a ping it would make an AJAX call to the…

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• Java Scanner won't follow file

  - by Steve Renyolds

  Trying to tail / parse some log files. Entries start with a date then can span many lines. This works, but does not ever see new entries to file. File inputFile = new File("C:/test.txt"); InputStream is = new FileInputStream(inputFile); InputStream bis = new BufferedInputStream(is); //bis.skip(inputFile.length()); Scanner src =…

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• socket operation on nonsocket or bad file descriptor

  - by Magn3s1um

  I'm writing a pthread server which takes requests from clients and sends them back a bunch of .ppm files. Everything seems to go well, but sometimes when I have just 1 client connected, when trying to read from the file descriptor (for the file), it says Bad file Descriptor. This doesn't make sense, since my int fd isn't -1,…

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• Bash edit file and keep last 500 lines

  - by Lizard

  I am looking to create a cron job that opens a directory loops through all the logs i have created and deletes all lines but keep the last 500 for example. I was thinking of something along the lines of tail -n 500 filename > filename Would this work? I also not sure how to loop through a directory in bash Thanks in…

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• How do I break out of a loop in Scala?

  - by TiansHUo

  For Problem 4 of Project Euler How do I break out a loop? var largest=0 for(i<-999 to 1 by -1) { for (j<-i to 1 by -1) { val product=i*j if (largest>product) // I want to break out here else if(product.toString=product.toString.reverse) largest=largest max product …

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• Seeking past end of file causes Apache hang, and it never restarts.

  - by talkingnews

  I've actually solved my problem with a better script, but I'm still left wondering why Apache2 hung completely - this is an out-of-the-box ISPCONFIG 3.03 install, everything bang up to date, running perfectly. Until... The troublesome but innocent-looking script: $fp = fopen("/var/log/ispconfig/cron.log", "r"); fseek($fp,…

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• Functional Programming - Lots of emphasis on recursion, why?

  - by peakit

  I am getting introduced to Functional Programming [FP] (using Scala). One thing that is coming out from my initial learnings is that FPs rely heavily on recursion. And also it seems like, in pure FPs the only way to do iterative stuff is by writing recursive functions. And because of the heavy usage of recursion seems the…

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• Clojure: Avoiding stack overflow in Sieve of Erathosthene?

  - by nixx

  Here's my implementation of Sieve of Erathosthene in Clojure (based on SICP lesson on streams): (defn nats-from [n] (iterate inc n)) (defn divide? [p q] (zero? (rem q p))) (defn sieve [stream] (lazy-seq (cons (first stream) (sieve (remove #(divide? (first stream) %) (rest stream)))))) …

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• Why does s ++ t not lead to a stack overflow for large s?

  - by martingw

  I'm wondering why Prelude> head $ reverse $ [1..10000000] ++ [99] 99 does not lead to a stack overflow error. The ++ in the prelude seems straight forward and non-tail-recursive: (++) :: [a] -> [a] -> [a] (++) [] ys = ys (++) (x:xs) ys = x : xs ++ ys So just with this, it should run into a stack…

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• Handwritten linked list is segfaulting and I don't understand why

  - by Born2Smile

  Hi I was working on a bit of fun, making an interface to run gnuplot from within c++, and for some reason the my linked list implementation fails. The code below fails on the line plots-append(&plot). Stepping through the code I discovered that for some reason the destructor ~John() is called immediately…

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• Is This the Death Or Birth of the Long Tail?

  When it comes to algorithmic changes that affect webmasters, Google is King. This most recent update seems to be centered around the long tail keyword, or phrase. Is there more to it?

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• Best Functional Approach

  - by dbyrne

  I have some mutable scala code that I am trying to rewrite in a more functional style. It is a fairly intricate piece of code, so I am trying to refactor it in pieces. My first thought was this: def iterate(count:Int,d:MyComplexType) = { //Generate next value n //Process n causing some side effects …

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• is there a way to tail a log from remote server without using any user credentials?

  - by suhprano

  I run a script tailing a log in a remote server, like so: ssh userx@someip tail -f /data/current.log|python2.7 monitorlog.py There are dependencies and service requirements that disallows me to run the script off the remote server. (DB, ACLs, and path to another service is uses) Is there a way I can…

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• SFML: Monster following player on a straight line

  - by user3504658

  I've searched for this and found a few topics , usually they used a function normalize and using simple vector subtracting which is ok , but how should I do it in sfml ? Instead of using: Movement = p.position() - m.position(); p is the player and m is the monster I used something like this to move…

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• Scheme accumulative recursion with lists

  - by John Retallack

  How can I pass a list as a parameter to a function adding elements to it recursively,and have it unmodified when it comes out of recursion?

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• "tailing" a binary file based on string location using bash?

  - by ilitirit

  I've got a bunch of binary files, each containing an embedded string near the end of the file but at different places (only occurs once in each file). I need to extract the part of the file starting at the location of the string till the end of the file and dump it into a new file. eg. If the file's…

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• tailf for windows

  - by user259349

  I found tail2win but it is a paid product. Are there any good freeware or shareware out there?

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• XSLT multiple string replacement with recursion

  - by John Terry

  I have been attempting to perform multiple (different) string replacement with recursion and I have hit a roadblock. I have sucessfully gotten the first replacement to work, but the subsequent replacements never fire. I know this has to do with the recursion and how the with-param string is passed…

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• F# why my recursion is faster than Seq.exists?

  - by user38397

  I am pretty new to F#. I'm trying to understand how I can get a fast code in F#. For this, I tried to write two methods (IsPrime1 and IsPrime2) for benchmarking. My code is: // Learn more about F# at http://fsharp.net open System open System.Diagnostics #light let isDivisible n d = n % d = 0 let…

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• In Powerpoint 2007, how can I position a Callout's Tail programatically?

  - by Rorschach

  I'm looking at the XML and this is what it has for the Callout object's coordinates and geometry: <p:spPr> <a:xfrm> <a:off x="2819400" y="5181600"/> // X,Y Position of Callout Box <a:ext cx="609600" cy="457200"/> // Width,Height of Callout Box …

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• Targeted Keywords - Should You Target the Most Popular Keywords Or the Long Tail?

  The vast majority of internet, niche or affiliate marketers are simply concerned with driving traffic to their websites in as large a quantity as possible which then in turn will lead to greater sales. There are different strategies that can be put in place regarding how the chosen…

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