optionalTransformLeafs

Behaves as transformLeafs but doesn't enforce at compile time that all types can be handled by the visiting functions.

The function ignores leafs that can't be handled by the visiting functions.

import mir.algebraic_alias.transform;

alias optionalTransformLeafs(visitors...) = transformLeafsImpl!(optionalVisit, naryFun!visitors)

Examples

import mir.format: text;
import mir.algebraic_alias.json;
JsonAlgebraic value = ["key" : [null.JsonAlgebraic, true.JsonAlgebraic, 100.JsonAlgebraic, 2.32.JsonAlgebraic].JsonAlgebraic];

// converts long numbers to a text form, ignores other types
value.optionalTransformLeafs!(
    (long v) => v.text,
    (bool b) => b, // needs special overload for bool to get rid of implicit converion to long/double
);
assert(value == ["key" : [null.JsonAlgebraic, true.JsonAlgebraic, "100".JsonAlgebraic, 2.32.JsonAlgebraic].JsonAlgebraic].JsonAlgebraic);

The OpenD Programming Language

optionalTransformLeafs

Examples

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