ruby - 如何从命令行将数组作为参数传递给 Ruby 函数？

Question

我想从命令行以数组作为参数调用 Ruby 函数。

脚本名为test.rb

在下面的代码中，Environments are like test,dev,uat.', am passing as ['test','dev','uat']

我试过如下:

ruby -r "./test.rb" -e "start_services '['dev','test','uat']','developer','welcome123'"

def start_services(environments,node_user_name,node_password)
  environments.each do |env|
    puts env
  end
  puts node_user_name
  puts node_password
end

输出:

-e:1: syntax error, unexpected tIDENTIFIER, expecting end-of-input start_services '['dev','test','uat']','developer',' ^

Answer 1

您显然想将一个数组作为第一个参数传递给 start_services 方法，因此您应该这样做:

$ ruby -r "./test.rb" -e "start_services ['dev','test','uat'],'developer','welcome123'"
# output:
dev
test
uat
developer
welcome123

到目前为止，您一直在尝试传递格式错误的 '[\'dev\',\'test\',\'uat\']' 字符串，因为您没有转义 ' 字符。