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TagSetDelayed


assigns rhs to be the delayed value of lhs, and associates the assignment with the symbol f.
An expression with a delayed definition is evaluated every time it is used:
Make definitions for special and general cases using immediate and delayed assignments:
The tag can appear as an argument of the left side:
The tag can appear as the head of an argument of the left side:
For ownvalues, the tag is redundant:
For downvalues, the tag is redundant:
Use a tag to define upvalues:
Implement modular arithmetic:
defines upvalues in the same way as using a tag does:
A tag defines only one upvalue; makes definitions for all symbols:
The right side of an immediate definition is evaluated when the definition is made:
The right side of a delayed definition is evaluated each time the definition is used:
Definitions with the same left side overwrite earlier ones:
Definition prints definitions associated with a symbol:
Information prints various information about a symbol, including any definitions:
UpValues returns a list of rules corresponding to any upvalues defined:
Use to clear definitions with a particular left-hand side:
Clear all definitions:
Delayed assignment introduces a scope that is not affected by global variables:
Immediate assignment does not introduce a scope:
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