| id | filter | ||
|---|---|---|---|
| compare |
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| mainCompare | filter | ||
| focusOn | map | ||
| video | 239108249 | ||
| learnBackAbout | fromEvent | ||
| lesson | 6 | ||
| title | Map vs Filter - Project function vs Predicate | ||
| layout | default | ||
| class | post | ||
| preview_image | filter/content_preview.jpg | ||
| preview_image_alt | Filter a stream |
In the video example, ▬ isEven accepts a number as an argument:
- If it is an even number, it returns
✔ true - Otherwise, it returns
✘ false
It is used as:
- a project function on
❚ map - a predicate function on
❚ filter
A predicate returns ✔ true or ✘ false.