| Expressions |
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| Expressions
are like “formulas” saying |
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| how
to manipulate existing values to |
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| compute
new values, e.g. hours/24 |
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| • | Operators: + -
* / %
produce numbers |
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| • | Operators: < <= ==
!= >= >
on numbers |
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| (or strings for == and !=) produce Booleans |
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| • | Operators: && ||
! on Booleans |
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| produce Booleans |
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| • | Grouping by parentheses is OK and smart |
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| seconds = ((days*24 + hours)*60 + min)*60 |
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