logging 2.3.1
**Logging** is a flexible logging library for use in Ruby programs based on the design of Java's log4j library. It features a hierarchical logging system, custom level names, multiple output destinations per log event, custom formatting, and more.
Gemfile:
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安裝:
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Runtime 相依性套件 (2):
little-plugger
~> 1.1
multi_json
~> 1.14