boolTable

A Nim's Macro library

generates code to print bool truth table.

Macro-based means it can even be used at nim VM!

the easiest

In heady:

dumpTable a^b # or `a ∧ b` (Unicode alternative)

Output:

a       b       a ^ b
0       0       0
0       1       0
1       0       0
1       1       1

advanced

make up

What if want a html output as a string?

Here you are:

var s = "<ul>\n<li>"
strTable s, a^b, sep=" ", endl="</li>\n<li>"
s.setLen s.len-4
s.add "</ul>"
echo s

Unicode op

dumpTable: a ∧ (¬ b) ∨ c

Output:

a       b       c       a ∧ (¬ b) ∨ c
0       0       0       0
0       0       1       1
0       1       0       0
0       1       1       1
1       0       0       1
1       0       1       1
1       1       0       0
1       1       1       1

Nim's op

As it's in Nim, you're free to use every Nim expression.

As it's done at compilation, nothing about secure problems

var cnt = 0
proc foo(a: bool): bool =
  cnt.inc
  a
dumpTableVars ¬ foo(a), [a]
echo cnt == 2