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module Boolean

rascal-0.40.16

Library functions for Booleans.

Usage​

import Boolean;

Dependencies​

import Exception;

Description​

The following library functions are defined for Booleans:

function arbBool​

Return an arbitrary Boolean value.

bool arbBool()

Examples​

rascal>import Boolean;
ok
rascal>arbBool();
bool: false
rascal>arbBool();
bool: true
rascal>arbBool();
bool: true

Benefits​

  • arbInt is a convenient generator for arbitrary binary choices.

function fromString​

Convert the strings "true" or "false" to a bool.

bool fromString(str s)

function toInt​

Convert a Boolean value to integer.

int toInt(bool b)

Maps true to 1 and false to 0.

Examples​

rascal>import Boolean;
ok
rascal>toInt(true);
int: 1
rascal>toInt(false);
int: 0

function toReal​

Convert Boolean value to real.

real toReal(bool b)

Maps true to 1.0 and false to 0.0.

Examples​

rascal>import Boolean;
ok
rascal>toReal(true);
real: 1.0
rascal>toReal(false);
real: 0.0

function toString​

Convert Boolean value to string.

str toString(bool b)

Maps true to "true" and false to "false".

Examples​

rascal>import Boolean;
ok
rascal>toString(true);
str: "true"
---
true
---
rascal>toString(false);
str: "false"
---
false
---