Added REVIEW Week 7 content #17
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Hi Jim, looks really good. For me the coding examples work better if you have a bit more context, something like, (step 6) https://github.com/HackYourFuture/JavaScript/blob/master/Week7/MAKEME.md . Also can you make sure that at the top there is a list that tells what is in the document?
Week7/REVIEW.md
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Hi Jim, can we keep this list at the top?
Week7/REVIEW.md
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| # REVIEW JavaScript week 7 | |||
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| ## Git Workflow | |||
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| To be provided | |||
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here we can add a link to: https://github.com/HackYourFuture/Git/blob/master/Lecture-3.md
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the workflow is explained there
| ### Array#filter | ||
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| The **filter()** method returns a new array with all elements that pass the test implemented by a user-supplied (predicate\*) function. | ||
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maybe you can describe a bit more what the function below does, (in a simpler way)
| ### Array#map\* | ||
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| The **map** method returns a new array where each element of the subject array is transformed by a user-supplied transformation (= _mapping_) function. | ||
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maybe you can describe a bit more what the function below does, (in a simpler way) and with a real life example, something people can actually relate to
| const numbers = [3, 5, 2, 7]; | ||
| const squares = numbers.map(num => num * num); | ||
| console.log(squares); // -> [9, 25, 4, 49] | ||
| ``` |
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I like that you say, "here we do the same using the map/filter/reduce method"
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Not sure what you want me to do here...
| > The reduce() method applies a function against an accumulator and each element in the array (from left to right) to reduce it to a single value\*\*. | ||
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| <small>\*\*Although reference is made to a 'single value', this single value may well be an array or an object, as you will see later in the examples below.</small> | ||
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same comment as above. It would be nice if the coding examples have a bit more context. explanation
| const numbers = [3, 5, 2, 7]; | ||
| const squares = numbers.map(num => num * num); | ||
| console.log(squares); // -> [9, 25, 4, 49] | ||
| ``` |
Discussion of map, filter and reduce.