ormaaj 1366311881 learn # f=n=n?n--*f:1 let n=10 f; echo $n
ormaaj 1366557837 forget
ormaaj 1366557860 learn +# f=n?n--*f:1 let n=10 n=f; echo $n
ormaaj 1371056021 forget
ormaaj 1371056033 learn 4# f=n?n--*f:1 let n=10 n=f; echo $n
ormaaj 1627196601 forget
ormaaj 1627196665 learn # f=n?n--*f:1 let n=10 n=f; echo "$n" # find n factorial