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Pry (software)
Pry is an interactive shell for the Ruby programming language. It is notable for its Smalltalk-inspired〔The Pry Ecosystem — John Mair, 2012 (link )〕 ability to start a REPL within a running program. This lets programmers debug and modify the current state of a system.
==Features==
Pry exposes most of its introspective capabilities using a filesystem metaphor.〔Pry — Reuven M. Lerner, LinuxJournal, July 2012, pp28 (link )〕 For example, it has a `cd` command to start interacting with a particular object, and uses `ls` to list methods and variables.
It is possible to start Pry at any point inside a running program.〔Interactive Debugging With Pry — Alan MacDougall, 2012 (link )〕 Due to the reflective nature of Ruby, this lets the programmer inspect the program, change its current state, or correct the source code without restarting the process.
A number of third party plugins are available for Pry,〔 these add tighter integration with other Ruby projects, enhance the abilities of Pry itself, and make Pry available over a remote connection.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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