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<entry index='e'>
<name>ENV</name>
<reference>environment variable</reference>
<reference>singleton method</reference>
<reference>instance</reference>
<reference>ruby</reference>
<reference>object</reference>
<reference>hash</reference>
<content>
((Object)) which operates same as ((Hash))
to access ((environment variable|Environment Variable)).
Actually it is an ((instance|Instance)) of the Object class
which adds a ((singleton method|Singleton Method)).
When the ((environment variable|Environment Variable)) is changed
with this object, it is succeeded to the offspring process
of ((Ruby)).
</content>
</entry>
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