# ENV.delete\_if

**URL:** <https://www.ruby-forum.com/t/env-delete-if/136361>\
**Category:** Development\
**Created:** [May 1, 2008, 8:12am UTC](https://www.ruby-forum.com/t/env-delete-if/136361 "2008-05-01T08:12:23Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tanaka\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/c67d28/32.png) [@Tanaka\_A](https://www.ruby-forum.com/u/Tanaka_A)\
**Post date:** [May 1, 2008, 8:12am UTC](https://www.ruby-forum.com/t/env-delete-if/136361/1 "2008-05-01T08:12:23Z")

</div>

ENV.delete\_if e$B$,e(B ENV  
e$B\<+?H$rJV$9$N$OJQ$J$s$8$c$J$$$G$7$g$&$+!#e(B

% ./ruby -ve ‘p ENV.delete\_if.equal?(ENV)’  
ruby 1.9.0 (2008-05-01 revision 16248) [i686-linux]  
true