Holder -- the class of all holder expressions

Description

This type of expression is a container for a single, arbitrary, thing that is basic enough that the correct method for printing does not depend on its neighbors in the containing expression. A negative number would not be basic enough for this purpose, since as a member of a sum, it would require special treatment.

Types of holder :

Describe -- the class of the output of describe
OneExpression -- the class all one expressions
Parenthesize
ZeroExpression -- the class of all zero expressions

Methods that use a holder :

- Holder -- see - -- a unary or binary operator, usually used for negation or subtraction
Equation == Holder -- see == -- equality
Holder == Equation -- see == -- equality
baseName(Holder) -- see baseName -- the base name of a generator
Holder / OneExpression -- see Constant
DirectSum ++ Holder (missing documentation)
Expression != Holder -- see Expression -- the class of all expressions
Expression % Holder -- see Expression -- the class of all expressions
Expression & Holder -- see Expression -- the class of all expressions
Expression - Holder -- see Expression -- the class of all expressions
Expression .. Holder -- see Expression -- the class of all expressions
Expression ..< Holder -- see Expression -- the class of all expressions
Expression / Holder -- see Expression -- the class of all expressions
Expression : Holder -- see Expression -- the class of all expressions
Expression <== Holder -- see Expression -- the class of all expressions
Expression <=== Holder -- see Expression -- the class of all expressions
Expression <==> Holder -- see Expression -- the class of all expressions
Expression ===> Holder -- see Expression -- the class of all expressions
Expression ==> Holder -- see Expression -- the class of all expressions
Expression @ Holder -- see Expression -- the class of all expressions
Expression @@ Holder -- see Expression -- the class of all expressions
Expression ^ Holder -- see Expression -- the class of all expressions
Expression ^** Holder -- see Expression -- the class of all expressions
Expression ^^ Holder -- see Expression -- the class of all expressions
Expression _ Holder -- see Expression -- the class of all expressions
Expression | Holder -- see Expression -- the class of all expressions
Expression |- Holder -- see Expression -- the class of all expressions
Expression || Holder -- see Expression -- the class of all expressions
Expression and Holder -- see Expression -- the class of all expressions
Expression Holder -- see Expression -- the class of all expressions
Expression or Holder -- see Expression -- the class of all expressions
Expression xor Holder -- see Expression -- the class of all expressions
Holder != Expression -- see Expression -- the class of all expressions
Holder != Holder -- see Expression -- the class of all expressions
Holder % Expression -- see Expression -- the class of all expressions
Holder % Holder -- see Expression -- the class of all expressions
Holder & Expression -- see Expression -- the class of all expressions
Holder & Holder -- see Expression -- the class of all expressions
Holder - Expression -- see Expression -- the class of all expressions
Holder - Holder -- see Expression -- the class of all expressions
Holder .. Expression -- see Expression -- the class of all expressions
Holder .. Holder -- see Expression -- the class of all expressions
Holder ..< Expression -- see Expression -- the class of all expressions
Holder ..< Holder -- see Expression -- the class of all expressions
Holder / Expression -- see Expression -- the class of all expressions
Holder / Holder -- see Expression -- the class of all expressions
Holder : Expression -- see Expression -- the class of all expressions
Holder : Holder -- see Expression -- the class of all expressions
Holder <== Expression -- see Expression -- the class of all expressions
Holder <== Holder -- see Expression -- the class of all expressions
Holder <=== Expression -- see Expression -- the class of all expressions
Holder <=== Holder -- see Expression -- the class of all expressions
Holder <==> Expression -- see Expression -- the class of all expressions
Holder <==> Holder -- see Expression -- the class of all expressions
Holder ===> Expression -- see Expression -- the class of all expressions
Holder ===> Holder -- see Expression -- the class of all expressions
Holder ==> Expression -- see Expression -- the class of all expressions
Holder ==> Holder -- see Expression -- the class of all expressions
Holder @ Expression -- see Expression -- the class of all expressions
Holder @ Holder -- see Expression -- the class of all expressions
Holder @@ Expression -- see Expression -- the class of all expressions
Holder @@ Holder -- see Expression -- the class of all expressions
Holder ^ Expression -- see Expression -- the class of all expressions
Holder ^ Holder -- see Expression -- the class of all expressions
Holder ^** Expression -- see Expression -- the class of all expressions
Holder ^** Holder -- see Expression -- the class of all expressions
Holder ^^ Expression -- see Expression -- the class of all expressions
Holder ^^ Holder -- see Expression -- the class of all expressions
Holder _ Expression -- see Expression -- the class of all expressions
Holder _ Holder -- see Expression -- the class of all expressions
Holder | Expression -- see Expression -- the class of all expressions
Holder | Holder -- see Expression -- the class of all expressions
Holder |- Expression -- see Expression -- the class of all expressions
Holder |- Holder -- see Expression -- the class of all expressions
Holder || Expression -- see Expression -- the class of all expressions
Holder || Holder -- see Expression -- the class of all expressions
Holder and Expression -- see Expression -- the class of all expressions
Holder and Holder -- see Expression -- the class of all expressions
Holder Expression -- see Expression -- the class of all expressions
Holder Holder -- see Expression -- the class of all expressions
Holder or Expression -- see Expression -- the class of all expressions
Holder or Holder -- see Expression -- the class of all expressions
Holder xor Expression -- see Expression -- the class of all expressions
Holder xor Holder -- see Expression -- the class of all expressions
Holder ** TensorProduct (missing documentation)
Holder ++ DirectSum (missing documentation)
TensorProduct ** Holder (missing documentation)

For the programmer

The object Holder is a wrapper type, with ancestor classes Expression < BasicList < Thing.