Can you help me simplify this lambda expression? I'm only able to use a map function for now. Thanks in advance!
array.map(val => {
if (val.num !== 1) {
val.num -= 1;
}
});
Can you help me simplify this lambda expression? I'm only able to use a map function for now. Thanks in advance!
array.map(val => {
if (val.num !== 1) {
val.num -= 1;
}
});
If you want to simplify the code, you can refactor it using a filter() for the id check and a forEach() for the id modification. Here is an example:
array.filter(value => value.id !== 1).forEach(value => value.id--);
Whether this actually simplifies the code could be subjective. It essentially replaces a single method with a two-step callback with two methods each calling a one-step callback. The simplicity might depend on personal preference.
In any case, using forEach() instead of map() would be more appropriate in your scenario. While both are similar, map() creates a new array from return values of the callback for each element, whereas forEach() simply calls the callback without returning anything. Since you do not seem concerned with the callback's return values or saving the results of array.map(), using forEach() is recommended.
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