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What does || mean in Arduino?

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To declare a Boolean variable, we use the keyword bool. bool b; To initialize or assign a true or false value to a Boolean variable, we use the keywords true and false. Boolean values are not actually stored in Boolean variables as the words \u201ctrue\u201d or \u201cfalse\u201d.Jun 9, 2007');})();(function(){window.jsl.dh('_l16HYLrMDO_L0PEP5JGz8AU47','

Boolean data type - Wikipedia

https://en.wikipedia.org \u203a wiki \u203a Boolean_data_type
https://en.wikipedia.org \u203a wiki \u203a Boolean_data_type
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Also, a numeric value of zero (integer or fractional), the null value ( None ), the empty string, and empty containers (i.e. lists, sets, etc.) are considered Boolean false; all other values are considered Boolean true by default.

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