singleton functions
# File irb/frame.rb, line 50 def Frame.bottom(n = 0) @backtrace.bottom(n) end
# File irb/frame.rb, line 24 def initialize @frames = [TOPLEVEL_BINDING] * INIT_STACK_TIMES end
# File irb/frame.rb, line 43 def bottom(n = 0) bind = @frames[n] Fail FrameOverflow unless bind bind end