Ruby Regex“包含”

Question

我在ruby代码中有以下正则表达式，它捕获了字段名称

的所有字段

  

时间戳

我需要做的是获取名称中包含时间戳的字段

代码如下：

event.to_hash.each { |k, v|
                if k =~ /(^|\.)timestamp$/ and v.to_s.to_i == v
                    event.set(k, LogStash::Timestamp.new(Time.at(v/1000)))
                end
            }

Answer 1

您可以使用.*和锚点来实现：

x = %w(timestamp also_timestamp timestamp_also also_timestamp_here not_time_stamp)
=> [
  "timestamp",
  "also_timestamp",
  "timestamp_also",
  "also_timestamp_here",
  "not_time_stamp"
]

x.each do |y|
  puts "#{y} is timestamp" if y.match?(/\A.*timestamp.*\z/)
end;

timestamp is timestamp
also_timestamp is timestamp
timestamp_also is timestamp
also_timestamp_here is timestamp

您也可以使用String#include

在不使用正则表达式的情况下进行操作