<span class="nf">reduce</span><span class="p">(</span><span class="nv">value</span><span class="p">:</span> <span class="k">inout</span> <span class="kt"><a href="../Structs/WidthPreference.html#/s:7SwiftUI13PreferenceKeyP5ValueQa">Value</a></span><span class="p">,</span> <span class="nv">nextValue</span><span class="p">:</span> <span class="p">()</span> <span class="o">-&gt;</span> <span class="kt"><a href="../Structs/WidthPreference.html#/s:7SwiftUI13PreferenceKeyP5ValueQa">Value</a></span><span class="p"