Array~funcprog-extras Class
Item Index
Methods
- findIndexOf static
- mapToObject static
- reduceRight static
Methods
findIndexOf
-
a -
f -
c
Executes the supplied function on each item in the array, searching for the first item that matches the supplied function. The function receives the value, the index, and the array itself as parameters (in that order).
Parameters:
-
aArraythe array to iterate
-
fFunctionthe function to execute on each item
-
cObjectoptional context object
Returns:
index of the first item for which the supplied function returns true, or -1 if it never returns true
mapToObject
-
a -
f -
c
Executes the supplied function on each item in the array and returns an object with the results. The function receives the value, the key, and the object itself as parameters (in that order). The function must return an array with two elements (key, value), which will be mixed into the result.
Parameters:
-
aMixedthe array to iterate
-
fStringthe function to execute on each item
-
cObjectoptional context object
Returns:
object of all return values, constructed via Y.mix
reduceRight
-
a -
init -
f -
c
Executes the supplied function on each item in the array, starting from the end and folding the list into a single value. The function receives the value returned by the previous iteration (or the initial value if this is the first iteration), the value being iterated, the index, and the list itself as parameters (in that order). The function must return the updated value.
Parameters:
-
aArraythe array to iterate
-
initMixedthe initial value
-
fStringthe function to execute on each item
-
cObjectoptional context object
Returns:
final result from iteratively applying the given function to each item in the array