/span> map_accum_left : <span>(float <span>&#45;&gt;</span> <span class="type-var">'a</span> <span>&#45;&gt;</span> <span><span>(float, <span class="type-var">'b</span>)</span> <a href="../../../../Functions/Travsersable/Internal/index.html#type-accum">Functions.Travsersable.Internal.accum</a></span>)</span> <span>&#45;&gt;</span> float <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="TSL/index.html#type-t">TSL.t</a></span> <span>&#45;&gt;</span> <span><span>(float, <span><span class