UseCallback¶
method
cref: M:Microsoft.UI.Reactor.Core.RenderContext.UseCallback(System.Action,System.Object[])
Overloads¶
UseCallback(Action, object[])UseCallback<T1>(Action, T1)UseCallback<T1, T2>(Action, T1, T2)UseCallback<T1, T2, T3>(Action, T1, T2, T3)
UseCallback(Action, object[])¶
method
cref: M:Microsoft.UI.Reactor.Core.RenderContext.UseCallback(System.Action,System.Object[])
Summary¶
Returns a stable callback reference that doesn't change between renders.
UseCallback<T1>(Action, T1)¶
method
cref: M:Microsoft.UI.Reactor.Core.RenderContext.UseCallback``1(System.Action,``0)
Summary¶
Single-dependency UseCallback overload that avoids the
params object[] allocation (and value-type boxing) on the
deps-unchanged path. Returns a stable reference until d1
changes.
Discussion¶
If d1's compile-time type is an array of reference types
(e.g. string[]), it is treated as a dependency list and compared
element-wise — matching the params object[] overload — not as a single
reference-compared value. A dependency whose static type is not an array is
always compared as one value, even if its runtime value happens to be an array.
UseCallback<T1, T2>(Action, T1, T2)¶
method
cref: M:Microsoft.UI.Reactor.Core.RenderContext.UseCallback``2(System.Action,``0,``1)
Summary¶
Two-dependency UseCallback overload that avoids the
params object[] allocation on the deps-unchanged path.
UseCallback<T1, T2, T3>(Action, T1, T2, T3)¶
method
cref: M:Microsoft.UI.Reactor.Core.RenderContext.UseCallback``3(System.Action,``0,``1,``2)
Summary¶
Three-dependency UseCallback overload that avoids the
params object[] allocation on the deps-unchanged path.