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我刚刚为 Ruby 安装了“sequel”gem。我想尝试 Sequel 网站上的示例，但它不起作用:( test.rb:

require 'rubygems'
require 'sequel'

DB = Sequel.sqlite # memory database

DB.create_table :items do
    primary_key :id
    String :name
    Float :price
end

items = DB[:items] # Create a dataset

# Populate the table
items.insert(:name => 'abc', :price => rand * 100)
items.insert(:name => 'def', :price => rand * 100)
items.insert(:name => 'ghi', :price => rand * 100)

# Print out the number of records
puts "Item count: #{items.count}"

# Print out the average price
puts "The average price is: #{items.avg(:price)}"

安慰：

$ sequel test.rb
Error: ArgumentError: syntax error on line 11, col 37: `i'/usr/lib/ruby/1.8/yaml.rb:133:in `load'
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1 回答 1

2

你需要用rubynot运行它sequel

$ ruby test.rb
于 2010-07-12T12:38:09.580 回答