The "Unknown:"s below indicate that an entry is incomplete.

• either the entry exist in the language, and please tell.
• either the entry doesn't exist in the language, and please tell so. The entry will be marked as such and won't appear as missing anymore.

See the various entries for C++

• Category: Object Oriented, Statically typed

• Various

  Unknown:

  documentation comment

• Functions

  [](ta a, tb b) { ... }	anonymous function
  [](ta a, tb b) -> typ { ... }	anonymous function

• Strings

  R"[ ... ]"

  strings (with no interpolation of variables)

• Bags and Lists

  Unknown:

  join a list of strings in a string using a glue string

• Various Data Types

  0 nullptr(1)	optional value (null value)
  ( a, b, c )	tuple constructor
  tuple< typ1, ..., typn >	tuple type

  Unknown:

  optional value (null coalescing)

• Mathematics

  Unknown:

  type name
  random (random number)
  random (seed the pseudo random generator)

Remarks

• (1) optional value is only for pointers