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Published on 2009-02-01T17:43:04Z
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2010/03/25
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I'm writing a Ruby script and would like to use a n-ary tree data structure.
Is there a good implementation that is available as source code? Thanks.
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Ok I followed the steps for setting up ruby and rails on my Vista machine and I am having a problem connecting to the database.
Contents of database.yml
development:
adapter: sqlserver
database: APPS_SETUP
Host: WindowsVT06\SQLEXPRESS
Username: se
Password: paswd
Run rake db:migrate…
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My application requires to keep large data objects in session. There are like 3-4 data objects each created by parsing a csv containing 150 X 20 cells having strings of 3-4 characters.
My application shows this error- "marshal data too short".
I tried this-
Deleting the old session table.
Deleting…
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I don't know is it my mistake or no. So i have that code:
<code>
post '/singin/get_token' do
content_type :xml
puts request.body.read
puts xmlRequest
xmlRequest = REXML::Document.new(request.body.read)
...
</code>
And when i post something like that:
<code>
<?xml…
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reading around the various ruby install tutorials it's required to change path from /usr/bin/ruby to /usr/local/bin/ruby but i cant seem to be able to do it. Ultimately i want to install Ruby 1.9.2, should i uninstall 1.8.7 or what? i tried to install Ruby 1.9.2 with macports, the installation seemed…
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i am getting a strange bundler error when running
bundle pack
with bundler 0.9.12
any ideas? (see pastie for a better formatted code: http://pastie.org/881328 )
/opt/ruby-enterprise-1.8.7-2010.01/lib/ruby/site_ruby/1.8/rubygems/package/tar_input.rb:49:in `initialize': not in gzip format (Zlib::GzipFile::Error)
…
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I'm writing a Ruby script and would like to use a n-ary tree data structure.
Is there a good implementation that is available as source code? Thanks.
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This is hurting my brain!
I want to recurse over a tree structure and collect all instances that match some filter into one list.
Here's a sample tree structure
type Tree =
| Node of int * Tree list
Here's a test sample tree:
let test =
Node((1,
[Node(2,
…
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In this article, http://cacm.acm.org/magazines/2010/7/95061-youre-doing-it-wrong/fulltext
the author talks about the memory layouts of 2 data structures - The Binary Heap and the B-Heap and compares how one has better memory layout than the other.
http://deliveryimages.acm.org/10.1145/1790000/1785434/figs/f5…
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Ever been in a situation where you were in an interview, and realized immediately afterwards (after the nervousness wore off) that you did something wrong?
I had a phone interview today. I was asked an n-ary tree problem, and coded an algorithm that used a space overhead, then a different algorithm…
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I'm writing a set of collection classes for different types of Trees. I'm doing this as a learning exercise and I'm also hoping it turns out to be something useful. I really want to do this the right way and so I've been reading Effective Java and I've also been looking at the way Joshua Bloch implemented…
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