Function Repository Resource:

# InverseBoole

Inverse of the Boole function

Contributed by: Daniel Sanchez (Wolfram Research)
 ResourceFunction["InverseBoole"][expr] yields True if expr is 1 and False if it is 0.

## Details and Options

ResourceFunction["InverseBoole"][expr] remains unchanged if expr is neither 1 nor 0.
ResourceFunction["InverseBoole"][expr] is effectively equivalent to Switch[expr,1,True,0,False].
ResourceFunction["InverseBoole"] is Listable.

## Examples

### Basic Examples (2)

 In[1]:=
 Out[1]=

Convert a List of 1's and 0's to truth values:

 In[2]:=
 Out[2]=

### Applications (1)

InverseBoole is particularly useful when testing a condition based on bit values:

 In[3]:=
 Out[3]=

### Properties and Relations (2)

InverseBoole is the inverse function of Boole:

 In[4]:=
 Out[4]=

InverseBoole deals with Rule just like Boole:

 In[5]:=
 Out[5]=
 In[6]:=
 Out[6]=

### Possible Issues (3)

Only one argument is expected:

 In[7]:=
 Out[7]=
 In[8]:=
 Out[8]=

If the sole argument provided is neither 1 nor 0, the expression is not evaluated:

 In[9]:=
 Out[9]=

If the argument is a numeric value, use Unitize together with InverseBoole:

 In[10]:=
 Out[10]=

Daniel Sanchez

## Version History

• 1.0.0 – 24 August 2020