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• code throws std::bad_alloc, not enough memory or can it be a bug?

  - by Andreas

  I am parsing using a pretty large grammar (1.1 GB, it's data-oriented parsing). The parser I use (bitpar) is said to be optimized for highly ambiguous grammars. I'm getting this error: 1terminate called after throwing an instance of 'std::bad_alloc' what(): St9bad_alloc dotest.sh: line 11: 16686 Aborted bitpar -p -b 1 -s top -u unknownwordsm -w pos.dfsa /tmp/gsyntax.pcfg /tmp/gsyntax.lex arbobanko.test arbobanko.results Is there hope? Does it mean that it has ran out of memory? It uses about 15 GB before it crashes. The machine I'm using has 32 GB of RAM, plus swap as well. It crashes before outputting a single parse tree. The parser is an efficient CYK chart parser using bit vector representations; I presume it is already near the limit of memory efficiency. If it really requires too much memory I could sample from the grammar rules, but this will decrease parse accuracy of course.

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• How can I dereference a hashref constant?

  - by makenai

  Let's say I have a hashref constant like the following: use constant DOGS => { Lassie => 'collie', Benji => 'mutt', Scooby => 'great dane', Goofy => '???' }; How can I dereference it properly to get say.. they keys out of it? warn ref DOGS; # HASH at untitled line 12. warn keys( %{DOGS} ); # Warning: something's wrong (empty list) warn keys( DOGS ); # Type of arg 1 to keys must be hash (not constant item) The following is the only way I can seem to make it work: my $dogs = DOGS; warn keys( %$dogs ); # LassieBenjiGoofyScooby at untitled line 15. What am I doing wrong?

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• Storing a bucket of numbers in an efficient data structure

  - by BlitzKrieg

  I have a buckets of numbers e.g. - 1 to 4, 5 to 15, 16 to 21, 22 to 34,.... I have roughly 600,000 such buckets. The range of numbers that fall in each of the bucket varies. I need to store these buckets in a suitable data structure so that the lookups for a number is as fast as possible. So my question is what is the suitable data structure and a sorting mechanism for this type of problem. Thanks in advance

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• How to dereference a hashref constant?

  - by makenai

  Let's say I have a hashref constant like the following: use constant DOGS => { Lassie => 'collie', Benji => 'mutt', Scooby => 'great dane', Goofy => '???' }; How can I dereference it properly to get say.. they keys out of it? warn ref DOGS; # HASH at untitled line 12. warn keys( %{DOGS} ); # Warning: something's wrong (empty list) warn keys( DOGS ); # Type of arg 1 to keys must be hash (not constant item) The following is the only way I can seem to make it work: my $dogs = DOGS; warn keys( %$dogs ); # LassieBenjiGoofyScooby at untitled line 15. What am I doing wrong?

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• Appending Integer array elements in Java

  - by Neville

  I have an array, say int a[]={2,0,1,0,1,1,0,2,1,1,1,0,1,0,1}; I need to append each of the 5 neighboring elements and assign them to a new array b with length=(a.length/5); and i want to append the 5 neighboring elements so that I have: int b[]={20101,10211,10101}; I need to do this for various length arrays, in most cases with length of a being greater than 15. Any help would be greatly appreciated, I'm programming in Java. Thanks in advance.

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• Preferred Method Of Application Purchase

  - by Chuck

  This is more of a "programmers" question, but felt that it was technical enough to belong on Stack Overflow instead. I'm launching an application soon that will follow the shareware model of purchase. I've thought about implementing this in a few ways: Limited access to the application until they purchase Full access to the application but expires after 30 day, requiring them to purchase to retain utility. Full access to the application indefinitely, but with a 10-15 second pop-up box on start-up asking them to register -- like mIRC does (or used to do). The method of authentication will be web-based. I'll provide them with an authentication key and they'll put it in the application. Whenever the application boots up, it'll check my web service and determine whether the application is genuine or not. This isn't my question. My question is: Is there a preferred method of implementation? I'd like to piss off the users as little as possible, but I'd also like to get paid for my work.

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• Need to open to two excel files and add numbers from them into a third file using vba.

  - by Harpyar Singh

  I have two excel files which has similar formatting and the data map each other from cell b15:h31. Row 15 is heading and so is the column B. I want to read file1 cell by cell and add that cell's content to the corresponding cell in File 2 i.e C16 in file 1 gets added to C16 in file 2, C17 in file 1 to C17 in file 2 and so on. The output goes in file 3 or anything. trying to implement through vba but of no success so far. Does anyone know how to go about it.

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• INET_ATON() and INET_NTOA() in PHP?

  - by blerh

  I want to store IP addresses in my database, but I also need to use them throughout my application. I read about using INET_ATON() and INET_NTOA() in my MySQL queries to get a 32-bit unsigned integer out of an IP address, which is exactly what I want as it will make searching through the database faster than using char(15). The thing is, I can't find a function that does the same sort of thing in PHP. The only thing I came across is: http://php.net/manual/en/function.ip2long.php So I tested it: $ip = $_SERVER['REMOTE_ADDR']; echo ip2long($ip); And it outputs nothing. In the example they gave it seems to work, but then again I'm not exactly sure if ip2long() does the same thing as INET_ATON(). Does someone know a PHP function that will do this? Or even a completely new solution to storing an IP address in a database? Thanks.

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• Stable URL of acts_as_taggable plugin in Ruby on Rails

  - by Rakesh Gupta

  Hi, In one of my applications on Ruby on Rails, I am using acts_as_taggable plugin. Coding was doing fine and suddenly it started giving following error. RuntimeError (acts_as_taggable_on_steroids has been moved to github: http://github.com/jviney/acts_as_taggable_on_steroids): app/models/post.rb:2 app/controllers/post_controller.rb:324:in post_scoper' app/controllers/post_controller.rb:221:indefault' C:\MyApp\script\server:3 -e:2:in `load' -e:2 Rendered rescues/_trace (94.0ms) Rendered rescues/_request_and_response (15.0ms) Rendering rescues/layout (internal_server_error) When trying installing the plugin from above URL, it says plugin has been moved. Does anyone have idea, what is the stable URL of acts_as_taggable plugin? Thanks in advance

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• MySQL easy question CURDATE()

  - by Tristan

  I want to compare two results one is stored in the first query, and the other is exactly the same as the first, but i want only to recieve data < today "SELECT s.GSP_nom as nom, timestamp, COUNT(s.GSP_nom) as nb_votes, AVG(v.vote+v.prix+v.serviceClient+v.interface+v.interface+v.services)/6 as moy FROM votes_serveur AS v INNER JOIN serveur AS s ON v.idServ = s.idServ WHERE s.valide = 1 AND v.date < CURDATE() ROUP BY s.GSP_nom HAVING nb_votes > 9 ORDER BY moy DESC LIMIT 0,15"; is that correct ? thank you

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• Where do all these messages come from?

  - by stacker

  This configuration works fine, but inbound-channel-adapter which is supposed to poll every 15 secs is running continously. Does anyone have an idea what I'm doning wrong? <si:channel id="msgChannel" /> <si:inbound-channel-adapter ref="jdbcInputAdapter" method="fetchData" channel="msgChannel"> <si:poller> <si:interval-trigger interval="15000" /> </si:poller> </si:inbound-channel-adapter> <si:outbound-channel-adapter ref="shouter" method="shout" channel="msgChannel"/>

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• Get a DB result with a value between two column values

  - by vitto

  Hi, I have a database situation where I'd like to get a user profile row by a user age range. this is my db: table_users username age email url pippo 15 [email protected] http://example.com pluto 33 [email protected] http://example.com mikey 78 [email protected] http://example.com table_profiles p_name start_age_range stop_age_range young 10 29 adult 30 69 old 70 inf I use MySQL and PHP but I don't know if there is some specific tacnique to do this and of course if it's possible. # so something like: SELECT * FROM table_profiles AS profiles INNER JOIN table_users AS users # can I do something like this? ON users.age IS BETWEEN profiles.start_age_range AND profiles.stop_age_range

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• Stopping httpd causes a process started from perl CGI script to receive SIGTERM

  - by Pranav Pal

  I am running a shell script from a perl CGI script: #!/usr/bin/perl my $command = "./script.sh &"; my $pid = fork(); if (defined($pid) && $pid==0) { # background process system( $command ); } The shell script looks like this: #!/bin/sh trap 'echo trapped' 15 tail -f test.log When I run the CGI script from browser, and then stop httpd using /etc/init.d/httpd stop, the script receives a SIGTERM signal. I was expecting the script to run as a separate process and not be tied in anyway to httpd. Though I can trap the SIGTERM, I would like to understand why the script is receiving SIGTERM at all. What wrong am I doing here? I am running RHEL 5.8 and Apache HTTP server 2.4. Thanks, Pranav

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• UISwitch quick toggle multiple times.

  - by Tejaswi Yerukalapudi

  I was playing around my app and I was toggling a UISwitch really fast (who can resist?). So, I toggled it really fast for 10-15 times, an array that should contain the data from the table view cell that I have my switch in either has extra copies of the same cell sometimes, just one copy (the correct case) a few times and no data in it at all some times. The app works fine if it's toggled at normal speed. I'm pretty sure this scenario won't really happen with my users, but I'm still curious as to why it's happening. Thanks, Teja

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• A simple way (in java) to remove headers

  - by Andersson Melo

  I need remove non-xml tags from file generated by another program. The file is some like this: Executing Command - Blah.exe ... -----Command Output----- HTTP/1.1 200 OK Connection: close Content-Type: text/xml <?xml version="1.0"?> <testResults> <right>7</right> <wrong>4</wrong> <ignores>0</ignores> <exceptions>0</exceptions> </finalCounts> </testResults> Exit-Code: 15 How to remove the non-xml text easily in java?

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• Better performance to Query the DB or Cache small result sets?

  - by user169867

  Say I need to populate 4 or 5 dropdowns w/ items from a database. Each drop down will have < 15 items in it. These items almost never change. Now I could query the DB each time the page is accessed or I could grab the values from a custom class that would check to see if they already exist in ASP.Net's cache and only if they don't query the DB to update the cache. It's trivial for me to write but I'm unsure if the performace would be better or not. I think it would be (although not likely anything huge). What do you think?

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• Creating lib file from java jar using mingw/gcj

  - by Xinus

  I am trying to convert jar file to native lib file using mingw-gcj under windows platform it is thrown me the error as C:\testDir\libs>gcj -o glassfish-embedded-all-3.1-SNAPSHOT.lib glassfish-embedde d-all-3.1-SNAPSHOT.jar com/sun/codemodel/JAnonymousClass.java: In class 'com.sun.codemodel.JAnonymousCl ass': com/sun/codemodel/JAnonymousClass.java: In constructor '(com.sun.codemodel.JClas s,com.sun.codemodel.JCodeModel)': In file included from com/sun/codemodel/CodeWriter.java:15, from <built-in>:3: com/sun/codemodel/JAnonymousClass.java:21: error: verification failed at PC=3: c onstant pool index out of range com/sun/codemodel/JAnonymousClass.java:21: confused by earlier errors, bailing o ut Is it related to some java 1.6 issue or bug in gcj /

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• how can i convert a video into image files using ffmpeg in c#?

  - by moon

  string inputpath = strFileNamePath; string outputpath = "C:\\Image\\"; //for (int iIndex = 0; iIndex < 1000; iIndex++) //{ //string fileargs = "-i" + " " + inputpath + " -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv " + outputpath + "SRT.flv"; string fileargs = "-i" + " " + inputpath + " " + outputpath + "image.jpg"; System.Diagnostics.Process p = new System.Diagnostics.Process(); p.StartInfo.FileName = "C:\\Documents and Settings\\Badr\\My Documents\\Visual Studio 2008\\Projects\\Video2image2video.\\ffmpeg\\ffmpeg.exe"; p.StartInfo.Arguments = fileargs; p.StartInfo.UseShellExecute = false; p.StartInfo.CreateNoWindow = true; p.StartInfo.RedirectStandardOutput = true; p.Start(); i have this code this creates only 1 image of video i apply a loop but i repeatedly generates the initial image how can i get images of all the video thanx in advance

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• Jetty with a custom JUL logger

  - by Alan Williamson

  I feel this should be easier, or I am missing something obvious. I am trying to use our custom JUL logging library with Jetty. No matter where I put the JAR file for the custom logger, it is not found. I have tried the usual suspects; /lib/, /lib/ext/, /WEB-INF/lib/ and even manually added it to the classpath. 2011-06-29 15:27:34.518::INFO: Started [email protected]:8080 Can't load log handler "net.aw20.logshot.client.LogShotHandler" java.lang.ClassNotFoundException: net.aw20.logshot.client.LogShotHandler java.lang.ClassNotFoundException: net.aw20.logshot.client.LogShotHandler at java.net.URLClassLoader$1.run(URLClassLoader.java:217) I am starting up Jetty using "-jar start.jar" technique. Searching around, I have spotted a couple of threads that talk about this problem, but with no resolution. Or if there was, they didn't answer with their solution. Can anyone help on this front? Thanks

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• Invalid argument for foreach()

  - by johnny-kessel

  Error I'm receiving Invalid argument supplied for foreach() The offending portions is this: foreach($subs[$id] as $id2 => $data2) Strange cause I'm using the same construct elsewhere and it works fine.. I'm using it to generate sub-categories and it works but I want to get rid of the error This is more context foreach($parents as $id => $data) { if($x == 0) { $html .= "<tr width='25%' class='row2'>"; } $shtml = ""; $i = 0; ***foreach($subs[$id] as $id2 => $data2)*** { $i++; if($i == 15) { $shtml .= $this->ipsclass->compiled_templates[ 'skin_businesses' ]->portal_categories_sub_row( $id2, $data2['cat_name'], 1 ) . ""; break; } else $shtml .= $this->ipsclass->compiled_templates[ 'skin_businesses' ]->portal_categories_sub_row( $id2, $data2['cat_name'], 0 ) . ""; }

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• Converting datetime.ctime() values to Unicode

  - by Malcolm

  I would like to convert datetime.ctime() values to Unicode. Using Python 2.6.4 running under Windows I can set my locale to Spanish like below: import locale locale.setlocale(locale.LC_ALL, 'esp' ) Then I can pass %a, %A, %b, and %B to ctime() to get day and month names and abbreviations. import datetime dateValue = datetime.date( 2010, 5, 15 ) dayName = dateValue.strftime( '%A' ) dayName 's\xe1bado' How do I convert the 's\xe1bado' value to Unicode? Specifically what encoding do I use? I'm thinking I might do something like the following, but I'm not sure this is the right approach. codePage = locale.getdefaultlocale()[ 1 ] dayNameUnicode = unicode( dayName, codePage ) dayNameUnicode u's\xe1bado' Malcolm

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• Select in PL-SQL Errors: INTO After Select

  - by levi

  I've the following query in a test script window declare -- Local variables here p_StartDate date := to_date('10/15/2012'); p_EndDate date := to_date('10/16/2012'); p_ClientID integer := 000192; begin -- Test statements here select d.r "R", e.amount "Amount", e.inv_da "InvoiceData", e.product "ProductId", d.system_time "Date", d.action_code "Status", e.term_rrn "IRRN", d.commiount "Commission", 0 "CardStatus" from docs d inner join ext_inv e on d.id = e.or_document inner join term t on t.id = d.term_id where d.system_time >= p_StartDate and d.system_time <= p_EndDate and e.need_r = 1 and t.term_gr_id = p_ClientID; end Here is the error: ORA-06550: line 9, column 3: PLS-00428: an INTO clause is expected in this SELECT statement I've been using T-SQL for a long time and I'm new to pl-sql What's wrong here?

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• What is the cost in bytes for the overhead of a sql_variant column in SQL Server?

  - by Elan

  I have a table, which contains many columns of float data type with 15 digit precision. Each column consumes 8 bytes of storage. Most of the time the data does not require this amount of precision and could be stored as a real data type. In many cases the value can be 0, in which case I could get away with storing a single byte. My goal here is to optimize space storage requirements, which is an issue I am facing working with a SQL Express 4GB database size limit. If byte, real and float data types are stored in a sql_variant column there is obviously some overhead involved in storing these values. What is the cost of this overhead? I would then need to evaluate whether I would actually end up in significant space savings (or not) switching to using sql_variant column data types. Thanks, Elan

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• User settings mechanism for Yii

  - by Peterim

  Hi guys! I need some help with user settings mechanism for my Yii-based application. I've created the following db structure to store user settings: table user with the following fields id | username | email | etc. table settingslist (to store a list of all possible settings with descriptions) with the following fields id | code | name | description table settings (to store all user settings) with the following fields id | userid | settingslistcode | value Now I'm stuck with the form which allows user to change his settings. I had to deal before with the regular models (i.e. for posts, comments, etc.) where every new model had only one row in the database (Post model - id | title | body |) with the certain amount of attributes (fields of the table). But now I need to store user settings in 10-15 rows and I don't know how to apply Yii model mechanism to work with this, so I can retrieve those settings in a single form (so user could change his preferences). Any suggestions are greatly appreciated. Thank you!

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• Can't require local CoffeeScript modules

  - by superlukas

  I'm running Node.js 0.10.21. I tried both CoffeeScript 1.6.3 and master both with and without require('coffee-script/extensions'). Compiling the two files to JavaScript and running them directly in Node works just fine of course. # ./folder/a.coffee require('../b').test() # ./b.coffee exports.test = -> console.log 'yay' # $ coffee folder/a.coffee # # Error: Cannot find module '../b' # at Function.Module._resolveFilename (module.js:338:15) # at Function.Module._load (module.js:280:25) # at Module.require (module.js:364:17) # at require (module.js:380:17) # at Object.<anonymous> (/Users/test/folder/a.coffee:1:1) # at Module._compile (module.js:456:26)

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