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2.1 | 1 | ==== Logical (Boolean) operators and constants ==== |
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5.1 | 3 | AND: |
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2.1 | 4 | |
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5.1 | 5 | |x|y|x AND y |
| 6 | |False|False|False | ||
| 7 | |False|True|False | ||
| 8 | |True|False|False | ||
| 9 | |True|True|True | ||
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2.1 | 10 | |
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5.1 | 11 | If and only if both x and y are True the AND operator returns True, otherwise False. |
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2.1 | 12 | |
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5.1 | 14 | OR: |
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| 16 | |x|y|x OR y | ||
| 17 | |False|False|False | ||
| 18 | |False|True|True | ||
| 19 | |True|False|True | ||
| 20 | |True|True|True | ||
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| 22 | If and only if both x and y are False the OR operator returns False, otherwise True. | ||
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| 25 | NOT: | ||
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| 27 | |x|NOT x | ||
| 28 | |False|True | ||
| 29 | |True|False | ||
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| 31 | The NOT operator returns the opposite of the input. | ||
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| 34 | TRUE: | ||
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| 36 | The TRUE operator can be used when having an if-clause, for example: If (x<0 = TRUE) then ... | ||
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2.1 | 39 | FALSE |
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5.1 | 41 | The FALSE operator can be used when having an if-clause, for example: If (x<0 = FALSE) then ... |
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2.1 | 42 | |
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5.1 | 43 | |
| 44 | With the logical operators you can for example connect an if condition: If number > 5 AND number < 10 is true then... This if-clause checks if the number is between 6 and 9. | ||
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2.1 | 46 | For more details have a look [[here>>https://en.wikipedia.org/wiki/Boolean_algebra#Basic_operations]] |
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| 48 | ---- | ||
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| 50 | ==== Comparison operators ==== | ||
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5.1 | 52 | ~= (equals) |
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2.1 | 53 | |
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5.1 | 54 | ≠ (does not equal) |
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2.1 | 55 | |
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5.1 | 56 | < (is less than) |
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2.1 | 57 | |
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5.1 | 58 | ≤ (is less or equal than) |
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2.1 | 59 | |
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5.1 | 60 | ~> (is greater than) |
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2.1 | 61 | |
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5.1 | 62 | ≥ (is greater or equal than) |
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2.1 | 63 | |
| 64 | With the comparison operators you can check if a data is equal, greater than, less than...then another data. | ||
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| 66 | For example: | ||
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| 68 | 1<2 gives you TRUE | ||
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3.1 | 70 | 2<1 gives you FALSE |
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| 72 | 1≤1 gives you TRUE | ||
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| 74 | 1≤0 gives you FALSE | ||
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2.1 | 76 | 1=1 gives you TRUE |
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| 78 | 1=2 gives you FALSE | ||
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3.1 | 80 | 1≠2 gives you TRUE |
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2.1 | 81 | |
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3.1 | 82 | 1≠1 gives you FALSE |
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2.1 | 83 | |
| 84 | For more details have a look [[here>>https://en.wikipedia.org/wiki/Relational_operator]] |