Logic Blocks
true
This block represents the constant value true
. Use it for setting
boolean property values of components, or as the value of a variable that
represents a condition.
false
This block represents the constant value false
. Use it for setting
boolean property values of components, or as the value of a variable that
represents a condition.
not
This block performs logical negation, returning false if the input is true, and true if the input is false.
equals
This block tests whether its arguments are equal.
- Two numbers are equal if they are numerically equal, for example, 1 is equal to 1.0.
- Two text blocks are equal if they have the same characters in the same order,
with the same case. For example,
banana
is not equal toBanana
. - Numbers and text are equal if the number is numerically equal to a number that
would be printed with that text. For example, 12.0 is equal to the result of
joining the first character of
1A
to the last character ofTeafor2
. - Two lists are equal if they have the same number of elements and the corresponding elements are equal.
and
This block tests whether all of a set of logical conditions are true. The result is
true if and only if all the tested conditions are true. When you plug a condition
into the test
socket, another socket appears so you can add another
condition. The conditions are tested left to right, and the testing stops as soon
as one of the conditions is false. If there are no conditions to test, then the
result if true. You can consider this to be a logician's joke.
or
This block tests whether any of a set of logical conditions are true. The result is
true if one or more of the tested conditions are true. When you plug a condition
into the test
socket, another socket appears so you can add another
condition. The conditions are tested left to right, and the testing stops as soon
as one of the conditions is true. If there are no conditions to test, then the
result is false.