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Mathematica > Core Language > Expressions > Evaluation Control >

Built-in Mathematica Symbol

$IterationLimit

$IterationLimit
gives the maximum length of evaluation chain used in trying to evaluate any expression.

$IterationLimit limits the number of times Mathematica tries to re-evaluate a particular expression.

$IterationLimit gives an upper limit on the length of any list that can be generated by Trace.

Define a function in an iterative fashion:

Evaluate by temporarily setting $IterationLimit to a different value:

With a higher $IterationLimit we can compute the function:

Define a function in an iterative fashion:

Evaluate by temporarily setting $IterationLimit to a different value:

With a higher $IterationLimit we can compute the function:

Use ReleaseHold to keep going with the iteration:

The iteration limit can be set to

to allow any number of evaluation steps:

The iteration limit protects against runaway definitions:

The recursion limit protects against recursive runaway definitions: