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The PartialSums(L) function returns a list of partial sums of the elements in list L.

$\mathrm{with}\left(\mathrm{ListTools}\right)\:$

$\mathrm{PartialSums}\left(\left[a\,b\,c\right]\right)$

$\left[a\,a+b\,a+b+c\right]$

$L≔\left[1\,2\,3\,4\,5\,6\,7\,8\,9\,10\right]$

$L≔\left[1\,2\,3\,4\,5\,6\,7\,8\,9\,10\right]$

$\mathrm{PartialSums}\left(L\right)$

$\left[1\,3\,6\,10\,15\,21\,28\,36\,45\,55\right]$

$\mathrm{Digits}≔2$

$\mathrm{Digits}≔2$

$\mathrm{PartialSums}\left(\left[\mathrm{seq}\left(\sin \left(1.0i\right)\,i=0..13\right)\right]\right)$

$\left[0.\,0.84\,1.8\,1.9\,1.1\,0.14\,\mathrm{-0.14}\,0.52\,1.5\,1.9\,1.4\,0.4\,\mathrm{-0.14}\,0.28\right]$