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# ddmd.apply

Compiler implementation of the D programming language.
Authors:
Walter Bright
License:
Boost License 1.0

Source: apply.d

class `PostorderExpressionVisitor`: ddmd.visitor.StoppableVisitor;
  An Expression tree walker that will visit each Expression e in the tree, in depth-first evaluation order, and call fp(e,param) on it. fp() signals whether the walking continues with its return value:
  Returns:
  0 continue 1 done It's a bit slower than using virtual functions, but more encapsulated and less brittle. Creating an iterator for this would be much more complex.

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