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Name	Size	Permission	Date
%5b%5d%3d-c.ri	2.11 KB	-rw-r--r--	2026-04-07 17:22
%5b%5d-c.ri	657 B	-rw-r--r--	2026-04-07 17:22
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cdesc-ENV.ri	9.48 KB	-rw-r--r--	2026-04-07 17:22
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values-c.ri	657 B	-rw-r--r--	2026-04-07 17:22
values_at-c.ri	947 B	-rw-r--r--	2026-04-07 17:22

Rename

U:RDoc::NormalClass[iI"ENV:ET@I"Object;To:RDoc::Markup::Document:@parts[o;;[@o:RDoc::Markup::Paragraph;[I"<\ENV is a hash-like accessor for environment variables.;To:RDoc::Markup::BlankLine�S:RDoc::Markup::Heading:
leveli:	textI"*Interaction with the Operating System;T@o;	;[I"QThe \ENV object interacts with the operating system's environment variables:;T@o:RDoc::Markup::List:
@type:BULLET:@items[o:RDoc::Markup::ListItem:@label0;[o;	;[I"tWhen you get the value for a name in \ENV, the value is retrieved from among the current environment variables.;To;;0;[o;	;[I"{When you create or set a name-value pair in \ENV, the name and value are immediately set in the environment variables.;To;;0;[o;	;[I"iWhen you delete a name-value pair in \ENV, it is immediately deleted from the environment variables.;T@S;;i;
I"Names and Values;T@o;	;[I",Generally, a name or value is a String.;T@S;;i	;
I"Valid Names and Values;T@o;	;[I"5Each name or value must be one of the following:;T@o;;;;[o;;0;[o;	;[I"A String.;To;;0;[o;	;[I"|An object that responds to \#to_str by returning a String, in which case that String will be used as the name or value.;T@S;;i	;
I"Invalid Names and Values;T@o;	;[I"A new name:;T@o;;;;[o;;0;[o;	;[I"!May not be the empty string:;To:RDoc::Markup::Verbatim;[I"ENV[''] = '0'
;TI"?# Raises Errno::EINVAL (Invalid argument - ruby_setenv())
;T:@format0o;;0;[o;	;[I"0May not contain character <code>"="</code>:;To;;[I"ENV['='] = '0'
;TI"@# Raises Errno::EINVAL (Invalid argument - ruby_setenv(=))
;T;0o;	;[I"A new name or value:;T@o;;;;[o;;0;[o;	;[I"?May not be a non-String that does not respond to \#to_str:;T@o;;[	I"ENV['foo'] = Object.new
;TI"G# Raises TypeError (no implicit conversion of Object into String)
;TI"ENV[Object.new] = '0'
;TI"G# Raises TypeError (no implicit conversion of Object into String)
;T;0o;;0;[o;	;[I"9May not contain the NUL character <code>"\0"</code>:;T@o;;[	I"ENV['foo'] = "\0"
;TI"Q# Raises ArgumentError (bad environment variable value: contains null byte)
;TI"ENV["\0"] == '0'
;TI"P# Raises ArgumentError (bad environment variable name: contains null byte)
;T;0o;;0;[o;	;[I"QMay not have an ASCII-incompatible encoding such as UTF-16LE or ISO-2022-JP:;T@o;;[	I"<ENV['foo'] = '0'.force_encoding(Encoding::ISO_2022_JP)
;TI"f# Raises ArgumentError (bad environment variable name: ASCII incompatible encoding: ISO-2022-JP)
;TI"<ENV["foo".force_encoding(Encoding::ISO_2022_JP)] = '0'
;TI"f# Raises ArgumentError (bad environment variable name: ASCII incompatible encoding: ISO-2022-JP)
;T;0S;;i;
I"About Ordering;T@o;	;[I"=\ENV enumerates its name/value pairs in the order found ;TI"6in the operating system's environment variables. ;TI"VTherefore the ordering of \ENV content is OS-dependent, and may be indeterminate.;T@o;	;[I"This will be seen in:;To;;;;[o;;0;[o;	;[I"'A Hash returned by an \ENV method.;To;;0;[o;	;[I".An Enumerator returned by an \ENV method.;To;;0;[o;	;[I"<An Array returned by ENV.keys, ENV.values, or ENV.to_a.;To;;0;[o;	;[I"(The String returned by ENV.inspect.;To;;0;[o;	;[I"%The Array returned by ENV.shift.;To;;0;[o;	;[I""The name returned by ENV.key.;T@S;;i;
I"About the Examples;To;	;[I"_Some methods in \ENV return \ENV itself. Typically, there are many environment variables. ;TI"CIt's not useful to display a large \ENV in the examples here, ;TI"Fso most example snippets begin by resetting the contents of \ENV:;To;;;;[o;;0;[o;	;[I"@ENV.replace replaces \ENV with a new collection of entries.;To;;0;[o;	;[I"ENV.clear empties \ENV.;T@S;;i;
I"What's Here;T@o;	;[I"*First, what's elsewhere. \Class \ENV:;T@o;;;;[o;;0;[o;	;[I"AInherits from {class Object}[rdoc-ref:Object@What-27s+Here].;To;;0;[o;	;[I"DExtends {module Enumerable}[rdoc-ref:Enumerable@What-27s+Here],;T@o;	;[I";Here, class \ENV provides methods that are useful for:;T@o;;;;[o;;0;[o;	;[I"2{Querying}[rdoc-ref:ENV@Methods+for+Querying];To;;0;[o;	;[I"4{Assigning}[rdoc-ref:ENV@Methods+for+Assigning];To;;0;[o;	;[I"2{Deleting}[rdoc-ref:ENV@Methods+for+Deleting];To;;0;[o;	;[I"4{Iterating}[rdoc-ref:ENV@Methods+for+Iterating];To;;0;[o;	;[I"6{Converting}[rdoc-ref:ENV@Methods+for+Converting];To;;0;[o;	;[I"/{And more ....}[rdoc-ref:ENV@More+Methods];T@S;;i;
I"Methods for Querying;T@o;;;;[o;;0;[o;	;[I"R::[]: Returns the value for the given environment variable name if it exists:;To;;0;[o;	;[I"-::empty?: Returns whether \ENV is empty.;To;;0;[o;	;[I"H::has_value?, ::value?: Returns whether the given value is in \ENV.;To;;0;[o;	;[I"O::include?, ::has_key?, ::key?, ::member?: Returns whether the given name ;TI"is in \ENV.;To;;0;[o;	;[I"E::key: Returns the name of the first entry with the given value.;To;;0;[o;	;[I"5::size, ::length: Returns the number of entries.;To;;0;[o;	;[I"=::value?: Returns whether any entry has the given value.;T@S;;i;
I"Methods for Assigning;T@o;;;;[	o;;0;[o;	;[I"Q::[]=, ::store: Creates, updates, or deletes the named environment variable.;To;;0;[o;	;[I"?::clear: Removes every environment variable; returns \ENV:;To;;0;[o;	;[I"L::update, ::merge!: Adds to \ENV each key/value pair in the given hash.;To;;0;[o;	;[I"8::replace: Replaces the entire content of the \ENV ;TI"1with the name/value pairs in the given hash.;T@S;;i;
I"Methods for Deleting;T@o;;;;[o;;0;[o;	;[I"H::delete: Deletes the named environment variable name if it exists.;To;;0;[o;	;[I"8::delete_if: Deletes entries selected by the block.;To;;0;[o;	;[I":::keep_if: Deletes entries not selected by the block.;To;;0;[o;	;[I"O::reject!: Similar to #delete_if, but returns +nil+ if no change was made.;To;;0;[o;	;[I"A::select!, ::filter!: Deletes entries selected by the block.;To;;0;[o;	;[I"2::shift: Removes and returns the first entry.;T@S;;i;
I"Methods for Iterating;T@o;;;;[o;;0;[o;	;[I"D::each, ::each_pair: Calls the block with each name/value pair.;To;;0;[o;	;[I"0::each_key: Calls the block with each name.;To;;0;[o;	;[I"3::each_value: Calls the block with each value.;T@S;;i;
I"Methods for Converting;T@o;;;;[o;;0;[o;	;[I"F::assoc: Returns a 2-element array containing the name and value ;TI"4of the named environment variable if it exists:;To;;0;[o;	;[I"2::clone: Returns \ENV (and issues a warning).;To;;0;[o;	;[I"I::except: Returns a hash of all name/value pairs except those given.;To;;0;[o;	;[I"3::fetch: Returns the value for the given name.;To;;0;[o;	;[I"9::inspect: Returns the contents of \ENV as a string.;To;;0;[o;	;[I">::invert: Returns a hash whose keys are the \ENV values, ;TI"7and whose values are the corresponding \ENV names.;To;;0;[o;	;[I"+::keys: Returns an array of all names.;To;;0;[o;	;[I"C::rassoc: Returns the name and value of the first found entry ;TI"that has the given value.;To;;0;[o;	;[I"I::reject: Returns a hash of those entries not rejected by the block.;To;;0;[o;	;[I"R::select, ::filter: Returns a hash of name/value pairs selected by the block.;To;;0;[o;	;[I"O::slice: Returns a hash of the given names and their corresponding values.;To;;0;[o;	;[I"A::to_a: Returns the entries as an array of 2-element Arrays.;To;;0;[o;	;[I"=::to_h: Returns a hash of entries selected by the block.;To;;0;[o;	;[I".::to_hash: Returns a hash of all entries.;To;;0;[o;	;[I"/::to_s: Returns the string <tt>'ENV'</tt>.;To;;0;[o;	;[I".::values: Returns all values as an array.;To;;0;[o;	;[I"D::values_at: Returns an array of the values for the given name.;T@S;;i;
I"More Methods;T@o;;;;[o;;0;[o;	;[I" ::dup: Raises an exception.;To;;0;[o;	;[I"#::freeze: Raises an exception.;To;;0;[o;	;[I"5::rehash: Returns +nil+, without modifying \ENV.;T:
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