Children.opApply

Undocumented in source. Be warned that the author may not have intended to support it.
  1. int opApply(int delegate(GluiNode node) @(trusted) dg)
  2. int opApply(int delegate(size_t index, GluiNode node) @(trusted) dg)
    struct Children
    @safe
    int
    opApply
    (
    int delegate @trusted dg
    )

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