Data commit

Task/Boolean-values/EMal/boolean-values.emal

@@ -0,0 +1,18 @@
+^|EMal has a dedicated Logical type expressed by the logic keyword.
+ |It's not nullable and holds the two values false and true.
+ |There are no implicit conversions, but explicit conversions
+ |from/to int (0,1) or text ("⊥", "⊤") are allowed.
+ |^
+logic booleanTrue = true
+logic booleanFalse = false
+if 2 > 1 and true and not false
+  writeLine("true: " + true + ", false: " + false)
+end
+if false == logic!0
+  writeLine("explicit conversion from integer")
+end
+if true == logic!"⊤"
+  writeLine("explicit conversion from text")
+end
+writeLine(int!true) # is one
+writeLine(text!false) # is "⊥"