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Document .keys() (#655)

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Itsuki Toyota 4 years ago committed by GitHub
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      README.md

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README.md

@ -87,7 +87,7 @@ The function output is dictated by the function itself.
| stddev() | Provides the standard deviation value of an array of numbers | Double | | stddev() | Provides the standard deviation value of an array of numbers | Double |
| length() | Provides the length of an array | Integer | | length() | Provides the length of an array | Integer |
| sum() | Provides the sum value of an array of numbers | Double | | sum() | Provides the sum value of an array of numbers | Double |
| keys() | Provides the property keys (An alternative for terminal tilde `~`) | `Set<E>` |
Filter Operators Filter Operators
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