Class: DuList

DuList

DuList helps manipulating JS Arrays and After Effects Collections the same way. It is faster than converting a Collection to an Array.
Other specific Adobe Lists in other Applications may be supported later.
The first item of a DuList is always at index 0, the last at index length-1.
Accessor is the DuList.at() method instead of Array.
List length is given by the DuList.length() method instead of a property.
DuList does not reimplement methods to add or remove items, use the source list instead with the DuList.list() property and the original methods (from the Collection instance or Array).
DuList can also be used as an iterator with iterator-like methods like DuList.next().
You can also run a function on each item with DuList.do().

new DuList()

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 981
Constructs a new DuList object
Properties:
Name Type Description
isCollection boolean true if the original list is an After Effects Collection, false otherwise
isArray boolean true if the original list is an Array, false otherwise

Members

readonlyatEndBoolean

True if the iterator has reached the end.

readonlyatStartBoolean

True if the iterator is at the start.

readonlycurrentint

The current index of the iterator.

readonlyisArrayBoolean

True if the original list is an Array, false otherwise

readonlyisCollectionBoolean

True if the original list is an After Effects Collection, false otherwise.

readonlylistArray Collection

The original list, an Array or an After Effects Collection.

readonlyvalidBoolean

True if the iterator is between 0 and length-1. Note that on creation, the iterator is always invalid, but calling DuList.next() moves it to the beginning and makes it valid.

Methods

staticDuList.isAECollection(collection){boolean}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 15707
Checks if the param is an AE collection or an Array
Name Type Description
collection Array | Collection The list to check
Returns:
Type Description
boolean true if collection is a collection, false if it's an array

staticDuList.isList(list){boolean}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1738
Checks if this is an Array or an After Effects collection type or a DuList
Name Type Description
list Array | Collection The list to check
Returns:
Type Description
boolean true if this is a Cllection or an Array or a DuList

append()

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1479
Alias for DuList.push()

appendUnique()

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1488

at(index){object}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1111
Accessor. First item is always 0, last is always length()-1
Does not move the iterator to the index; to move the iterator use DuList.goTo instead.
Name Type Description
index int The index of the item. If it is out of range (negative or > length()-1), returns null
Returns:
Type Description
object The item at the given index.

concat(other){DuList}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1445
Mergeserge two lists.
This method does not change the existing list, but instead returns a new list.
Name Type Description
other Array | DuList The other list.
Returns:
Type Description
DuList The new list.

contains(value, comparisonFunction){Boolean}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1159
Checks if the list contains the item
Name Type Description
value * The value to find. Must be compatible with the == operand if you don't provide a comparison function
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
Returns:
Type Description
Boolean

convertToArray()

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1325
Converts the stored list to an Array if it was a Collection.
This enables the modification of the list, but changes in the list will not be reflected in the application (if a layer is removed from the list, it is not removed in the application).

count()

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1096
Alias for DuList.length()

do(callBack, reverse)

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1700
Executes a function on each item of the List
Name Type Default Description
callBack function The function to execute, which takes one parameter: an item of the list
reverse Bool false optional Set this to true to iterate from the end.

equals(other, floatPrecision){boolean}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1238
Compares two arrays.
The items in the arrays must be compatible with the == operand if you don't provide a comparison function
Name Type Default Description
other Array | Collection | DuList The other list
floatPrecision int -1 optional The precision for (float) number comparison, number of decimals. Set to -1 to not use.
Returns:
Type Description
boolean true if the two arrays contain the same values

first(){*}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1316
Gets the first item in the list
Returns:
Type Description
* The first item, null if the list is empty.

getDuplicates(){DuList}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1182
Returns all duplicated values found in the list
Returns:
Type Description
DuList The duplicated values. An empty list for Ae Collections as they can't have duplicated items.

goTo(index){*}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1620
Sets the iterator on the index
Name Type Description
index int The index
Returns:
Type Description
* The item at index, or null if the index is invalid

goToEnd(){Object}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1642
Goes to the end of the Iterator
Returns:
Type Description
Object The item at the end, or null if length is 0

goToStart(){Object}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1651
Goes to the start of the Iterator
Returns:
Type Description
Object The item at the start, or null if length is 0

hasDuplicates(){boolean}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1168
Checks if the list has duplicated values
Returns:
Type Description
boolean true if the list has duplicated values. Always false for Ae Collections as they can't have duplicated items.

indexOf(value, comparisonFunction){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1139
Gets the first index of a value, or -1 if not found
Name Type Description
value * The value to find. Must be compatible with the == operand if you don't provide a comparison function
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
Returns:
Type Description
int The index of the value, -1 if not found

isEmpty(){boolean}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1299
Returns true if the list is empty
Returns:
Type Description
boolean

join(separator){string}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1538
Reimplementation of the Array.join function.
For collections, the name of the item will be used, or any other property which makes sense as a string list.
Name Type Description
separator string The separator to use
Returns:
Type Description
string The new length of the list.

last(){*}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1307
Gets the last item in the list
Returns:
Type Description
* The last item, null if the list is empty.

length(){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1092
Returns the number of items in the list
Returns:
Type Description
int The number of items.

merge(arr){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1504
Merges the new array to the current list.
Note that to the contrary of the Array.concat() method, this does not create a new list, but modifies the current one in place.
The internal list may be converted to an Array if needed.
Name Type Description
arr Array.<any> The other array.
Returns:
Type Description
int The new length of the list.

mergeUnique(arr, comparisonFunction){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1521
Merges the new array to the current list.
Will only add items if they're not already in the list.
Note that to the contrary of the Array.concat() method, this does not create a new list, but modifies the current one in place.
The internal list may be converted to an Array if needed.
Name Type Description
arr Array.<any> | DuList The other array/list.
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
Returns:
Type Description
int The new length of the list.

next(){any}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1661
Increments the Iterator
Must be called at least once to validate the iterator
Returns:
Type Description
any The next item, or null if there isn't

pop(){any|null}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1601
Removes the last element of the list and returns it.
The internal list may be converted to an Array if needed.
Returns:
Type Description
any | null The last element or null if the list is empty.

previous(){Object}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1681
Decrements the Iterator if it's called while valid is false, goes to the end
Returns:
Type Description
Object The previous item, or null if there isn't

push(element0, element1, elementN){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1429
Adds one or more elements to the end of the list and returns the new length of the list.
The internal list may be converted to an Array if needed.
Name Type Description
element0 any The element(s) to add to the end of the array.
element1 any The element(s) to add to the end of the array.
element... any The element(s) to add to the end of the array.
elementN any The element(s) to add to the end of the array.
Returns:
Type Description
int The new length of the list.

pushUnique(comparisonFunction, element0, element1, elementN){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1465
Adds one or more elements to the end of the list and returns the new length of the list, only if the value is not already in the list
The internal list may be converted to an Array if needed.
Name Type Description
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
element0 any The element(s) to add to the end of the array.
element1 any The element(s) to add to the end of the array.
element... any The element(s) to add to the end of the array.
elementN any The element(s) to add to the end of the array.
Returns:
Type Description
int The new length of the list.

reinitIterator()

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1611
Reinits the iterator, i.e. go to index -1 so that the next call to DuList.next returns the first item.

remove(index)

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1346
Removes the item at the given index. The internal list may be converted to an Array if needed.
The iterator invalidated.
Name Type Description
index int The index.

removeAll(index, comparisonFunction){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1381
Removes all occurences of the value from the list. The value must be checkable with the == operator if no comparisonFunction is provided.
The internal list may be converted to an Array if needed.
The iterator invalidated.
Name Type Description
index int The index.
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
Returns:
Type Description
int The number of items removed.

removeDuplicates(comparisonFunction){Array}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1207
Removes all duplicated values from the list, and returns them.
The internal list may be converted to an Array if needed.
The iterator invalidated.
Name Type Description
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
Returns:
Type Description
Array The duplicated (and removed) values. An empty list for Ae Collections as they can't have duplicated items.

removeOne(index, comparisonFunction)

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1362
Removes the first value from the list. The value must be checkable with the == operator if no comparisonFunction is provided.
The internal list may be converted to an Array if needed.
The iterator invalidated.
Name Type Description
index int The index.
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.

replace(what, with, comparisonFunction){int}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1576
Replaces all occurences of a value with another value.
The internal list may be converted to an Array if needed.
Name Type Description
what any The current value
with any The new value
comparisonFunction function optional A function which compares two values which returns true if the values are considered the same.
Returns:
Type Description
int The number of occurences which were updated.

sort(compareFunction){Array}

D:/RxLab/src/RxOT/DuAEF/Duik/Duik_API/DuAEF_Duik_api.jsxinc, line 1407
Reimplements the Array.sort() method.
The internal list may be converted to an Array if needed.
The iterator is invalidated.
Name Type Description
compareFunction function Specifies a function that defines the sort order. If omitted, the array elements are converted to strings, then sorted according to each character's Unicode code point value.
Returns:
Type Description
Array The sorted array. Note that the array is sorted in place, and no copy is made.