lu.meld

This module contains the meldInto functions; functions that take two structs or classes of the same type and combine them, creating a resulting object with the union of the members of both parents. Array and associative array variants exist too.

Members

Enums

MeldingStrategy enum MeldingStrategy: To what extent a source should overwrite a target when melding.
Unmeldable enum Unmeldable: UDA conveying that this member's value cannot or should not be melded.

Functions

meldInto void meldInto(QualThing meldThis, Thing intoThis): Takes two structs or classes of the same type and melds them together, making the members a union of the two.
meldInto void meldInto(Array1 meldThis, Array2 intoThis): Takes two arrays and melds them together, making a union of the two.
meldInto void meldInto(QualAA meldThis, AA intoThis): Takes two associative arrays and melds them together, making a union of the two.

Examples

struct Foo
{
    string abc;
    string def;
    int i;
    float f;
    double d;
}

Foo f1; // = new Foo;
f1.abc = "ABC";
f1.def = "DEF";

Foo f2; // = new Foo;
f2.abc = "this won't get copied";
f2.def = "neither will this";
f2.i = 42;
f2.f = 3.14f;

f2.meldInto(f1);

with (f1)
{
    import std.math : isNaN;

    assert(abc == "ABC");
    assert(def == "DEF");
    assert(i == 42);
    assert(f == 3.14f);
    assert(d.isNaN);
}

lu.meld

Members

Enums

Functions

Examples

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