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  • Uninstall ruby from source

    - by vise
    I installed ruby 1.9 on my fedora 13 machine from source. I want to go back and use the older 1.8.6 (which I'll install with yum), unfortunetly it appears that I can't simply uninstall my current version by "make uninstall" (make: *** No rule to make targetuninstall'. Stop.`). Is there any way of doing this other than removing each individual file?

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  • Installing Ruby 1.8.6 via RVM on Snow Leopard

    - by Neil Middleton
    I'm trying to install ruby 1.8.6 onto Snow Leopard - but am getting some make errors: ossl_x509revoked.c: In function ‘ossl_x509revoked_new’: ossl_x509revoked.c:48: warning: passing argument 2 of ‘ASN1_dup’ from incompatible pointer type ossl_x509revoked.c: In function ‘DupX509RevokedPtr’: ossl_x509revoked.c:64: warning: passing argument 2 of ‘ASN1_dup’ from incompatible pointer type readline.c: In function ‘username_completion_proc_call’: readline.c:730: error: ‘username_completion_function’ undeclared (first use in this function) readline.c:730: error: (Each undeclared identifier is reported only once readline.c:730: error: for each function it appears in.) make[1]: *** [readline.o] Error 1 make: *** [all] Error 1 Anyone have any ideas?

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  • Installing Ruby 1.8.6 via RVM on Snow Leopard

    - by Neil Middleton
    I'm trying to install ruby 1.8.6 onto Snow Leopard - but am getting some make errors: ossl_x509revoked.c: In function ‘ossl_x509revoked_new’: ossl_x509revoked.c:48: warning: passing argument 2 of ‘ASN1_dup’ from incompatible pointer type ossl_x509revoked.c: In function ‘DupX509RevokedPtr’: ossl_x509revoked.c:64: warning: passing argument 2 of ‘ASN1_dup’ from incompatible pointer type readline.c: In function ‘username_completion_proc_call’: readline.c:730: error: ‘username_completion_function’ undeclared (first use in this function) readline.c:730: error: (Each undeclared identifier is reported only once readline.c:730: error: for each function it appears in.) make[1]: *** [readline.o] Error 1 make: *** [all] Error 1 Anyone have any ideas?

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  • Problems installing rails on Ubuntu 12.04. Rails gems library is empty

    - by Woho87
    I got some problem installing rails on Ubuntu 12.04. I have rails working on my Ubuntu for a little time. But for some reason I uninstall rails. When I decided to install it again with sudo gem install rails . The command rails -v doesn't work. When I run the command sudo gem install rails there is no error occurring just a message that saying: Successfully installed rails-3.2.6 I look at the folder /usr/lib/ruby/gems/1.8/gems/rails-3.2.6 and it is completely empty? I wonder how I can fix this problem?

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  • MediaTemple DV SSL and Passenger

    - by pcasa
    Followed these instructions to get Passenger and media temple's apache talking to each other. http://greggoodwin.com/2009/03/01/install-ruby-on-rails-with-passenger-on-mediatemple-dv-35-how-to/ I have ssl_requirement installed and pages requesting SSL but can't figure out which .conf file gets edited and what to put in it. httpd.conf, vhosts.conf, ssl.conf, vhosts_ssl.conf? For what its worth where my vhosts.conf file is at, there is also a httpd.include that looks like it holds some info from certs created by Plesk. In there it says to create a /var/www/vhosts/sitename.com/conf/vhost_ssl.conf file for ssl. Currently I have vhosts.conf in /var/www/vhosts/sitename.com/conf/vhosts.conf And it looks like ServerAlias www.sitename.com DocumentRoot /var/www/vhosts/sitename.com/rails/sitename/public <Directory "/var/www/vhosts/sitename.com/rails/sitename/public"> Options FollowSymLinks AllowOverride None Order allow,deny RailsEnv development Allow from all </Directory> RailsBaseURI /

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  • Is it safe to set MySQL isolation to "Read Uncommitted" (dirty reads) for typical Web usage? Even with replication?

    - by Continuation
    I'm working on a website with typical CRUD web usage pattern: similar to blogs or forums where users create/update contents and other users read the content. Seems like it's OK to set the database's isolation level to "Read Uncommitted" (dirty reads) in this case. My understanding of the general drawback of "Read Uncommitted" is that a reader may read uncommitted data that will later be rollbacked. In a CRUD blog/forum usage pattern, will there ever be any rollback? And even if there is, is there any major problem with reading uncommitted data? Right now I'm not using any replication, but in the future if I want to use replication (row-based, not statement-based) will a "Read Uncommitted" isolation level prevent me from doing so? What do you think? Has anyone tried using "Read Uncommitted" on their RDBMS?

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  • puppet rspec no such file to load -- rspec-puppet (LoadError)

    - by Vorsprung
    I have no prior experience at all of ruby. I am not interested in ruby (and so have no knowledge of rails etc) as such but am using puppet to manage a group of servers. I have written some modules and the rspec-puppet system looks like it would be very useful. However, I cannot get rspec-puppet to work I am using Ubuntu LTS 10.04 I have installed puppet rspec using the directions on their web page What I actually did apt-get install rubygems # (installs 1.8) gem install rspec-expectations gem install rspec-puppet I also installed librspec-ruby1.8 Then I ran rspec-puppet-init in a puppet module directory I'd already made (it's a working puppet module) I made a file as defined in the tutorial $ more spec/defines/rule_spec.rb require 'spec_helper' describe 'vanusers::rule' do let(:title) { 't1' } it { should contain_class('vanusers::JamieA') } end but when I try and run it there is a mysterious dependancy issue $ spec spec/defines/rule_spec.rb /home/jamie/git/puppet/modules/vanusers/spec/spec_helper.rb:1:in `require': no such file to load -- rspec-puppet (LoadError) from /home/jamie/git/puppet/modules/vanusers/spec/spec_helper.rb:1 from ./spec/defines/rule_spec.rb:1:in `require' from ./spec/defines/rule_spec.rb:1 from /usr/lib/ruby/1.8/spec/runner/example_group_runner.rb:15:in `load' from /usr/lib/ruby/1.8/spec/runner/example_group_runner.rb:15:in `load_files' from /usr/lib/ruby/1.8/spec/runner/example_group_runner.rb:14:in `each' from /usr/lib/ruby/1.8/spec/runner/example_group_runner.rb:14:in `load_files' from /usr/lib/ruby/1.8/spec/runner/options.rb:132:in `run_examples' from /usr/lib/ruby/1.8/spec/runner/command_line.rb:9:in `run' from /usr/bin/spec:3 Here is the solution I came up with in the end:: apt-get install rubygems gem install rspec-expectations rspec-puppet puppet-lint puppetlabs_spec_helper so your path picks up the gem stuff export PATH=/var/lib/gems/1.8/bin:$PATH cd into module and rm spec/spec_helper.rb rspec-puppet-init replace Rakefile with require 'rake' require 'rspec/core/rake_task' require 'puppetlabs_spec_helper/rake_tasks' Then "rake spec" to run tests or "rake lint" to check files http://sysadvent.blogspot.co.uk/2013/12/day-22-getting-started-testing-your.html was an excellent source of info

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  • ubuntu 11.10 foreman error

    - by user1060759
    Like this post I am also trying to complete this heroku tutorial I have installed and used everything (node.js, npm, express) successfully until I got to Foreman. I installed Foreman by first installing Ruby: alex@ubuntu:~$ sudo apt-get install ruby1.9.1 then installing Foreman. I am a newbie to Unix so I "sudo" perhaps unnecessarily here, but I got confirmation in the terminal that it had installed but also some errors: alex@ubuntu:~/NodeHelloWorld$ sudo gem install foreman Invalid gemspec in [/var/lib/gems/1.8/specifications/foreman-0.26.1.gemspec]: invalid date format in specification: "2011-11-10 00:00:00.000000000Z" Invalid gemspec in [/var/lib/gems/1.8/specifications/term-ansicolor-1.0.7.gemspec]: invalid date format in specification: "2011-10-13 00:00:00.000000000Z" Invalid gemspec in [/var/lib/gems/1.8/specifications/foreman-0.26.1.gemspec]: invalid date format in specification: "2011-11-10 00:00:00.000000000Z" Invalid gemspec in [/var/lib/gems/1.8/specifications/term-ansicolor-1.0.7.gemspec]: invalid date format in specification: "2011-10-13 00:00:00.000000000Z" Successfully installed term-ansicolor-1.0.7 Successfully installed foreman-0.26.1 Then when I try to start foreman I get similar: alex@ubuntu:~/NodeHelloWorld$ foreman start Invalid gemspec in [/var/lib/gems/1.8/specifications/foreman-0.26.1.gemspec]: invalid date format in specification: "2011-11-10 00:00:00.000000000Z" Invalid gemspec in [/var/lib/gems/1.8/specifications/term-ansicolor-1.0.7.gemspec]: invalid date format in specification: "2011-10-13 00:00:00.000000000Z" /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:926:in `report_activate_error': Could not find RubyGem foreman (>= 0) (Gem::LoadError) from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:244:in `activate_dep' from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:236:in `activate' from /usr/lib/ruby/vendor_ruby/1.8/rubygems.rb:1307:in `gem' from /usr/local/bin/foreman:18 Can anyone help me? I am a newbie to Unix after finally dumping windows as I found I could not get foreman-windows to work for me either I have found this post from someone with apparently the same issue. Does this mean my version of ruby could be wrong? I am running 1.9.1, though again new to ruby as well; alex@ubuntu:~/NodeHelloWorld$ ruby1.9.1 -v ruby 1.9.2p290 (2011-07-09 revision 32553) [i686-linux] Thanks

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  • GoldenGate 12c - MySQL Active-Active Replication Setup

    - by Jinyu Wang-Oracle
    Active-active  (also called Master-Master or Bi-Directional) replication captures data changes from two or more systems and replicat the changes to synchronize the data.  Active-Active replication is often needed for high availability, load balancing and scaling out purposes.   Oracle GoldenGate is known to be one of the first and the best replication tool handling active-active replications. As of Oracle GoldenGate 12c, it provides (Refer to Oracle GoldenGate 12.1.2 Documentation - Configuring Oracle GoldenGate for Active-Active High Availability for more information) the followings: Robust loop-back prevention Comprehensive conflict resolution and detection support Heterogeneous support across different database versions and operation systems.  Oracle GoldenGate supports active-active configurations for DB2 on z/OS, LUW, and IBM i, MySQL, Oracle, SQL/MX,SQL Server, Sybase, and Teradata. However, the setup is different from database to database. In this example, I will show you how to setup an active-active data replication between two MySQL database instances. The example setup below is to have active-active replication between MySQL 5.5 and MySQL 5.6 instances and is shown as follows: MySQL 5.5 (Manager Port: 15105)  Extract EXTRACT demoex01 SETENV (MYSQL_UNIX_PORT='/home/oracle/software/mysql_5.5.38/data/mysql.sock') DBOPTIONS CONNECTIONPORT 3305 DBOPTIONS HOST oraclelinux6.localdomain SOURCEDB test USERID root, PASSWORD mysql EXTTRAIL ./dirdat/extract/de TRANLOGOPTIONS ALTLOGDEST "/home/oracle/software/mysql_5.5.38/data/binlog/bin-log.index" FILTERTABLE test.checkpoint_tbl REPORTROLLOVER AT 05:30 ON saturday TABLE test.TCUSTMER; TABLE test.TCUSTORD; Pump EXTRACT demopm01 RMTHOST localhost, MGRPORT 15106, COMPRESS, TIMEOUT 30 RMTTRAIL ./dirdat/replicat/ps PASSTHRU TABLE test.TCUSTMER; TABLE test.TCUSTORD; Replicat replicat demorp01 setenv (MYSQL_UNIX_PORT='/home/oracle/software/mysql_5.5.38/data/mysql.sock') dboptions host oraclelinux6.localdomain, connectionport 3305 targetdb test, userid root, password mysql sourcedefs ./dirdat/replicat/democust.def discardfile ./dirrpt/demprp01.dsc, purge REPERROR (DEFAULT, ABEND) REPERROR(1062, IGNORE) map test.TCUSTMER, target test.TCUSTMER,colmap(usedefaults, region_code="region code"); map test.TCUSTORD, target test.TCUSTORD; MySQL 5.6 (Manager Port: 15106) Replicat replicat demorp01 setenv (MYSQL_UNIX_PORT='/home/oracle/software/mysql_5.6.19/data/mysql.sock') dboptions host oraclelinux6.localdomain, connectionport 3306 targetdb test, userid root, password mysql --assumetargetdefs sourcedefs ./dirdat/replicat/democust.def discardfile ./dirrpt/demprp01.dsc, purge map test.TCUSTMER, target test.TCUSTMER, colmap(usedefaults, "region code"=region_code); map test.TCUSTORD, target test.TCUSTORD; Extract EXTRACT demoex01 SETENV (MYSQL_UNIX_PORT='/home/oracle/software/mysql_5.6.19/data/mysql.sock') DBOPTIONS CONNECTIONPORT 3306 DBOPTIONS HOST oraclelinux6.localdomain SOURCEDB test USERID root, USERID mysql EXTTRAIL ./dirdat/extract/de TRANLOGOPTIONS ALTLOGDEST "/usr/local/mysql56/data/binlog/bin-log.index" FILTERTABLE test.checkpoint_tbl TABLE test.TCUSTMER; TABLE test.TCUSTORD; Pump EXTRACT demopm01 RMTHOST localhost, MGRPORT 15105, COMPRESS, TIMEOUT 30 RMTTRAIL ./dirdat/replicat/ps PASSTHRU TABLE test.TCUSTMER; TABLE test.TCUSTORD; The setup parameters are quite self-explanatory. The key setup is to avoid the replication data  looping. Oracle GoldenGate for MySQL uses the information in the replication checkpoint table to identify the transaction applied by replicats and thus avoid extracting those transactions by Oracle GoldenGate extracts. The example setup in the extract in MySQL 5.5 instance is shown as follows.  TRANLOGOPTIONS ALTLOGDEST "/home/oracle/software/mysql_5.5.38/data/binlog/bin-log.index" FILTERTABLE test.checkpoint_tbl Setting up an active-active replication is often more complicated than this and requires the following additional considerations. I would elaborate on this in the follow-up discussions. 

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  • Ruby Irb reacts strangely to control keys

    - by eegg
    Hi. I'm (extremely) new to Ruby, having started today. I just moved from my system's Ruby 1.8 installation to Ruby 1.9, compiled from source. In doing so, irb has taken a turn for the worse. It reacts in a most unfriendly way to the non-alphanumeric control keys: UP key prints: ^[[A DOWN key prints: ^[[B DELETE key prints: ^[[3~ ...and so on. The main result of this for me is that I have no access to previously issued commands. Nor does tab-completion work; though none of this seems to be an issue with Wirble - the same happens when I remove my ~/.irbrc. I'm using: Ubuntu 9.10 GNOME Terminal 2.28.1 ruby 1.9.1p376 (2009-12-07 revision 26041) [i686-linux] Irb version 0.9.5 (05/04/13) Any ideas? :(

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  • Using inotify-tools and ruby to push uploads to Cloud Files

    - by Christian
    Hi Guys, I wrote a few scripts to monitor an uploads directory for changes, then capture the file uploaded/changed and push it to cloud files using a ruby script. This all works well 95% of the time, the only exception is that occasionally, ruby fails with a 'file does not exist' exception. I am assuming that the ruby 'push' script is being called before the file is 100% in its new location, so the script is being called a little prematurely. I tried adding a little function to my script to check if the file exists, if it doesn't, sleep 5 then try again, but this seems to snowball and eventually dies. I then just added a sleep 2 to all calls, but it hasn't helped as I now get the 'file does not exist' error again. #!/bin/sh function checkExists { if [ ! -e "$1" ] then sleep 5 checkExists $1 fi } inotifywait -mr --timefmt '%d/%m/%y-%H:%M' --format '%T %w %f' -e modify,moved_to,create,delete /home/skylines/html/forums/uploads | while read date dir file; do cloudpath=${dir:20}${file} localpath=${dir}${file} #checkExists $localpath sleep 2 ruby /home/cbiggins/bin/pushToCloud.rb skylinesaustralia.com $cloudpath $localpath echo "${date} ruby /home/cbiggins/bin/pushToCloud.rb skylinesaustralia.com $cloudpath $localpath" >> /var/log/pushToCloud.log done I am looking for any suggestions to help me make this 100% stable (eventually, I'll serve the uploaded files from Cloud FIles, so I need to make sure its perfect) Thanks in advance!

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  • MySQL full text search with partial words

    - by Rob
    MySQL Full Text searching appears to be great and the best way to search in SQL. However, I seem to be stuck on the fact that it won't search partial words. For instance if I have an article titled "MySQL Tutorial" and search for "MySQL", it won't find it. Having done some searching I found various references to support for this coming in MySQL 4 (i'm using 5.1.40). I've tried using "MySQL" and "%MySQL%", but neither works (one link I found suggested it was stars but you could only do it at the end or the beginning not both). Here's my table structure and my query, if someone could tell me where i'm going wrong that would be great. I'm assuming partial word matching is built in somehow. CREATE TABLE IF NOT EXISTS `articles` ( `article_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT, `article_name` varchar(64) NOT NULL, `article_desc` text NOT NULL, `article_link` varchar(128) NOT NULL, `article_hits` int(11) NOT NULL, `article_user_hits` int(7) unsigned NOT NULL DEFAULT '0', `article_guest_hits` int(10) unsigned NOT NULL DEFAULT '0', `article_rating` decimal(4,2) NOT NULL DEFAULT '0.00', `article_site_id` smallint(5) unsigned NOT NULL DEFAULT '0', `article_time_added` int(10) unsigned NOT NULL, `article_discussion_id` smallint(5) unsigned NOT NULL DEFAULT '0', `article_source_type` varchar(12) NOT NULL, `article_source_value` varchar(12) NOT NULL, PRIMARY KEY (`article_id`), FULLTEXT KEY `article_name` (`article_name`,`article_desc`,`article_link`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=7 ; INSERT INTO `articles` VALUES (1, 'MySQL Tutorial', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 6, 3, 1, '1.50', 1, 1269702050, 1, '0', '0'), (2, 'How To Use MySQL Well', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 1, 2, 0, '3.00', 1, 1269702050, 1, '0', '0'), (3, 'Optimizing MySQL', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 1, 0, '3.00', 1, 1269702050, 1, '0', '0'), (4, '1001 MySQL Tricks', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 1, 0, '3.00', 1, 1269702050, 1, '0', '0'), (5, 'MySQL vs. YourSQL', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 2, 0, '3.00', 1, 1269702050, 1, '0', '0'), (6, 'MySQL Security', 'Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.', 'http://www.domain.com/', 0, 2, 0, '3.00', 1, 1269702050, 1, '0', '0'); SELECT count(a.article_id) FROM articles a WHERE MATCH (a.article_name, a.article_desc, a.article_link) AGAINST ('mysql') GROUP BY a.article_id ORDER BY a.article_time_added ASC The prefix is used as it comes from a function that sometimes adds additional joins. As you can see a search for MySQL should return a count of 6, but unfortunately it doesn't.

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  • Using JRuby/Jython for Ruby/Python interoperability?

    - by dbr
    Quite-probably a silly question, as I don't know much about Java/Jython/JRuby/bytecode, but.. I stumbled across _why's unholy again today.. It allows you to output Python bytecode from Ruby code.. Basically allowing them to produce the same bytecode.. Jython outputs Java bytecode, as does JRuby.. Since these both compile to the same bytecode, does this mean you could potentially use any Python library from Ruby, and Ruby libraries from Python?

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  • installing ruby 1.9.3 of osx mavricsmavrics

    - by user1648962
    I am trying to install ruby 1.9.3 on my osx 10.9 operating system and I keep getting the following error : Error running 'requirements_osx_port_update_system ruby-1.9.3-p448', please read /Users/ramesh/.rvm/log/1383430694_ruby-1.9.3-p448/update_system.log Requirements installation failed with status: 1. I am using the following command to do the installtion : rvm install 1.9.3 The complete log is as given below : Ramesh:Downloads ramesh$ rvm install 1.9.3 Searching for binary rubies, this might take some time. No binary rubies available for: osx/10.9/x86_64/ruby-1.9.3-p448. Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies. Checking requirements for osx. Installing requirements for osx. Updating system............................................................................................................................................................................................................................................................. Error running 'requirements_osx_port_update_system ruby-1.9.3-p448', please read /Users/ramesh/.rvm/log/1383430694_ruby-1.9.3-p448/update_system.log Requirements installation failed with status: 1. Ramesh:Downloads ramesh$ clear

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  • Automatic counter in Ruby for each?

    - by yar
    I know you Ruby people will laugh at my bad Ruby code: i=0 for blah in blahs puts i.to_s + " " + blah i+=1 end I want to use a for-each and a counter... is there a better way to do it? Note: I don't know if blahs is an array or a hash, but having to do blahs[i] wouldn't make it much sexier. Also I'd like to know how to write i++ in Ruby. Edit: Technically, Matt's and Squeegy's answer came in first, but I'm giving best answer to paradoja so spread around the points a bit on SO. Also his answer had the note about versions, which is still relevant (as long as my Ubuntu 8.04 is using Ruby 1.8.6). Edit: Should've used puts "#{i} #{blah}" which is a lot more succinct.

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  • Advantages/disadvantages of Python and Ruby

    - by Seburdis
    I know this is going to seem a little like all the other python vs ruby question out there, but I'm not looking specifically to pick one over the other all the time. My question is, essentially, why would you use one language over the other when you are starting a new project? What features does ruby have that python doesn't that would make you decide on it for a given project? What about python over ruby? I was just recently thinking about the differentiation between the two languages because of Jamis Buck's "There is no magic, only awesome" series of articles (4 parts, available here) when I realized I really don't know enough about the two languages to know when to choose one over the other. I'm hoping to get objective answers from people who have experience with both languages, rather than just "python is better, ruby sucks" kind of responses. If you know of a feature in one language that doesn't exist in the other and is great in a certain situation, feel free to chime in and say why you think it's awesome. If you have another language comparable to these that you'd like to suggest pros/cons for, like groovy for example, that would be appreciated too. Some thing I know each language has going for it: Ruby: Awesome metaprogramming Great community Wide selection of Gems Rails Great code readability, usually MacRuby is great for native development on Mac without objc Amazing testing tools (cucumber, rspec, shoulda, autotest, etc.) Python: Whitespace indentation List comprehensions Better functional programming support? Lots of support on linux Easy_install isn't far from gems Great variety of libraries available

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  • Upgrading Ruby to 1.9

    - by iwan
    Hello, I have ruby v 1.8 installed at C:\Ruby and its gems underneath. I am planning to upgrade to v 1.9 , and it's installer try to default the app to c:\Ruby 1.9 How shall i proceed in order not to break my old gems .. including Rails , etc? Thanks

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  • Framework Similar to Pylons for Ruby

    - by Travis
    I've been using Python for most of my web projects lately, and have come to really love the Pylons MVC framework. I like the incredible transparency (lack of magic), the built-in components they selected (sqlalchemy, formencode, routes), and the ability to easily change things up (use a different ORM or templating engine). Moving forward, due to constraints at my company, I'm going to be trying out Ruby rather than Python. I'm wondering if people with experience in both have any recommendations for a Ruby framework that is comparable to Pylons. Python is to Django as Ruby is to Rails Python is to Pylons as Ruby is to ?

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  • java.bigDecimal divide in ruby environment

    - by Eyal
    I right script in Ruby that include java classes require 'java' include_class 'java.math.BigDecimal' include_class 'java.math.RoundingMode' during the script I need to divide 2 java.bigDecimal one = BigDecimal.new("1") number1 = BigDecimal.new("3") number1 = one.divide(number1,RoundingMode.new(HALF_EVEN)) since I don't have intellisense in this IDE I'm not sure the syntax is right and the runtime error is: uninitialized constant::HALF_EVEN do I combine java object in the ruby scrpit in the right way? how should I divide two java.bigDecimal object in ruby env?

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  • XSLT transformations in Ruby and JRuby

    - by jpatokal
    Simple question: are there any solid XSLT libraries that work in both Ruby and JRuby? REXML works in both, but does not have XSLT support. ruby-xslt doesn't work in JRuby. The latest Nokogiri betas do support JRuby, but the support is still buggy and throws occasional NullPointerExceptions for XML input that works fine in Ruby. (In particular, any transforms that don't result in valid XML cause it to barf, even if xsl:output is set to 'text'!) JXslt is just a wrapper for Java's Xalan/Saxon and doesn't work in Ruby. Please tell me I'm missing something?

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  • Calling Python from Ruby

    - by Yktula
    Would it be possible to integrate Python and Ruby with some degree of transparency? I've looked at http://www.goto.info.waseda.ac.jp/~fukusima/ruby/python/doc/ , but it seems rather outdated. Perhaps this is not an appropriate approach, but would it be possible to generate a Ruby interface for Python's C API?

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  • Ruby as a scripting language for web server

    - by Olivier Lalonde
    Is it possible to use Ruby as a scripting language with a HTTP server ? I'd like to be able to simply put some Ruby files in a web directory and be able to execute them from my browser - just like I did with PHP. I have absolutely nothing against frameworks such as RoR, but I was told that I should first learn Ruby and only then move on with higher level frameworks. Of course, I could write some Ruby scripts and run them in the console, but I would prefer getting the input/output from my browser :) Is that possible at all ? Otherwise, how hard would it be for me to build a quick and simple web framework ?

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