$<_0>

This generator expression belongs to the Bound Operands family. See that section for related generator expressions.

Syntax

$<_0>

Added in version 4.5.

$<_0> is the bound operand of the enclosing binding operation: a generator expression that evaluates a <body> once for each value it supplies, with $<_0> expanding to that value.

For example, $<LIST:TRANSFORM,...,APPLY,body> evaluates body once per list element with $<_0> bound to the current element.

$<_0> is only valid inside the body of a binding operation. Using it anywhere else is an error.