Eshell V8.2  (abort with ^G)
1> cd("f6_original").
C:/Git/FLErlangConcurrency/f6_original
ok
2> c(f6).
{ok,f6}
3> f6:start().
true
4> f6:allocate().
{ok,10}
5> f6:allocate().
{ok,11}
6> f6:allocate().
{ok,12}
7> f6:allocate().
{ok,13}
8> f6:allocate().
{ok,14}
9> f6:allocate().
{ok,15}
10> f6:allocate().
{error,no_frequency}
11> f6:inject([21,22,23]).
** exception error: undefined function f6:inject/1
12> cd("../f6_upgrade").
C:/Git/FLErlangConcurrency/f6_upgrade
ok
13> pwd().
C:/Git/FLErlangConcurrency/f6_upgrade
ok
14> code:load_file(f6).
{module,f6}
15> code:soft_purge(f6).
false
16> f6:allocate().
{error,no_frequency}
17> f6:inject([21,22,23]).
injected
18> f6:allocate().
{ok,21}
19> f6:allocate().
{ok,22}
20> f6:allocate().
{ok,23}
21> f6:allocate().
{error,no_frequency}
22> f6:stop().
stopped
23>