--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Change the first element.
- !ruby/struct:SM::Flow::VERB 
  body: "  a = [&quot;a&quot;,&quot;y&quot;,&quot;z&quot;]\n  a.first = &quot;x&quot;\n  p a           #=&gt; [&quot;x&quot;,&quot;y&quot;,&quot;z&quot;]\n"
full_name: Indexable#first=
is_singleton: false
name: first=
params: (x)
visibility: public
