Boolean

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Programming basics[1]

In most computer programming languages, a Boolean data type is a data type with only two possible values: true or false.[2]

By convention we can express true as the integerA natural number, a negative of a natural number, or zero. 1 and false as the integerA natural number, a negative of a natural number, or zero. 0 (zero). Please be careful as some programming languages treat an empty or unset value as FALSE.

Please know it is very common to use booleans to test for a condition. If something is TRUE then select the true option, if something is FALSE, then select the false option.

Example

In PHP:

<?php
$myFirstVar = True; // assign the value TRUE to $myFirstVar
$myOtherVar = False; // assign the value FALSE to $myOtherVar
?>


In Python:

myFirstVar = True
myOtherVar = False

In Javascript:

var myFirstVar = true;
var myOtherVar = false;

Do you understand this?

Standards

  • DefineGive the precise meaning of a word, phrase, concept or physical quantity. the terms: variable, constant, operator, object.

References