method
http://apidock.com/ruby/Enumerable/each_with_index
http://apidock.com/ruby/Enumerable/each_with_index
each_with_index
Ruby latest stable (v1_8_7_72) - 0 notes - Class: Enumerable
-
all? -
any? - collect
-
count - cycle
- detect
- drop
- drop_while
- each_cons
- each_slice
- each_with_index
- entries
- enum_cons
- enum_slice
- enum_with_index
- find
- find_all
- find_index
- first
- grep
- group_by
- include?
-
inject -
map - max
- max_by
- member?
- min
- min_by
- minmax
- minmax_by
- none?
- one?
- partition
- reduce
- reject
- reverse_each
- select
- sort
- sort_by
- take
- take_while
- to_a
- to_set
- zip
= private
= protected
each_with_index() public Calls block with two arguments, the item and its index, for each item in enum.
<span class="ident">hash</span> <span class="punct">=</span> <span class="constant"><a href="http://apidock.com/ruby/Hash">Hash</a></span><span class="punct">.</span><span class="ident">new</span>
<span class="punct">%w(</span><span class="string">cat dog wombat</span><span class="punct">).</span><span class="ident"><a href="http://apidock.com/ruby/Enumerable/each_with_index">each_with_index</a></span> <span class="punct">{|</span><span class="ident">item</span><span class="punct">,</span> <span class="ident">index</span><span class="punct">|</span>
<span class="ident">hash</span><span class="punct">[</span><span class="ident">item</span><span class="punct">]</span> <span class="punct">=</span> <span class="ident">index</span>
<span class="punct">}</span>
<span class="ident">hash</span> <span class="comment">#=> {"cat"=>0, "wombat"=>2, "dog"=>1}</span>
