class << Object def private_accessor(*names) names.each do |name| attr_accessor name private "#{name}=" end end end

%w{ JsonDashArrow JsonDashDoubleArrow JsonHashArrow JsonHashDoubleArrow JsonbAtArrow JsonbArrowAt JsonbQuestion JsonbQuestionAnd JsonbQuestionOr CastJson }.each do |name| const_set name, Class.new(Binary) end

for sig in $(kill -l) ; do trap "echo parent:$sig" $sig done

The modern sense of "an X about X" has given rise to concepts like "meta-cognition" (cognition about cognition), "meta-emotion" (emotion about emotion), "meta-discussion" (discussion about discussion), "meta-joke" (joke about jokes), and "metaprogramming" (writing programs that manipulate programs).

The most widely used form of macros in Rust is declarative macros. These are also sometimes referred to as “macros by example,” “macro_rules! macros,” or just plain “macros.” At their core, declarative macros allow you to write something similar to a Rust match expression.

Ruby 2.1 added local_variable_set, but that cannot create new local variables either

binding.local_variable_get and binding.local_variable_set