Initial data commit

Task/Truth-table/Sidef/truth-table.sidef

@@ -0,0 +1,23 @@
+loop {
+  var expr = Sys.readln("\nBoolean expression (e.g. 'a & b'): ").strip.lc
+  break if expr.is_empty;
+
+  var vars = expr.scan(/[[:alpha:]]+/)
+  if (vars.is_empty) {
+    say "no variables detected in your boolean expression"
+    next
+  }
+
+  var prefix = [];
+  var suffix = [];
+
+  vars.each { |v|
+    print "#{v}\t"
+    prefix << "[false, true].each { |#{v}|"
+    suffix << "}"
+  }
+  say "| #{expr}"
+
+  var body = ("say (" + vars.map{|v| v+",'\t'," }.join + " '| ', #{expr})")
+  eval(prefix + [body] + suffix -> join("\n"))
+}