C#•3y ago

explicit null param

is there a way to specify an explicit overload for null ? eg foo(object_a); // object overload foo(null); // null overload eg, equivilant to C++'s std::nullptr_t specifically to avoid

foo(C_A);
foo(C_B);
foo(null); // ambigous overload

foo(C_A);
foo(C_B);
foo(null); // ambigous overload

5 Replies

Thinker•3y ago

You can't have an overload specifically for null, although you can have an overload without the parameter entirely.

androiduiOP•3y ago

rip

Thinker•3y ago

Why would you want this anyway?

androiduiOP•3y ago

could i use IntPtr as an overload for null ? for this

public void SetChildValueNull (string name)
{
    SkiaApi.sk_runtime_effect_builder_set_child_nullptr (Handle, name);
}

public void SetChildValue (string name, SKShader shader)
{
    SkiaApi.sk_runtime_effect_builder_set_child_shader (Handle, name, shader.Handle);
}

public void SetChildValue (string name, SKColorFilter colorFilter)
{
    SkiaApi.sk_runtime_effect_builder_set_child_color_filter (Handle, name, colorFilter.Handle);
}

public void SetChildValue (string name, SKBlender blender)
{
    SkiaApi.sk_runtime_effect_builder_set_child_blender (Handle, name, blender.Handle);
}

public void SetChildValueNull (string name)
{
    SkiaApi.sk_runtime_effect_builder_set_child_nullptr (Handle, name);
}

public void SetChildValue (string name, SKShader shader)
{
    SkiaApi.sk_runtime_effect_builder_set_child_shader (Handle, name, shader.Handle);
}

public void SetChildValue (string name, SKColorFilter colorFilter)
{
    SkiaApi.sk_runtime_effect_builder_set_child_color_filter (Handle, name, colorFilter.Handle);
}

public void SetChildValue (string name, SKBlender blender)
{
    SkiaApi.sk_runtime_effect_builder_set_child_blender (Handle, name, blender.Handle);
}

Anton•3y ago

Rename SetChildValueNull to SetChildValue, and just don't pass anything to it. If you need to check for null at runtime instead, then you'll need to do it in every function.

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explicit null param