297 lines
8.1 KiB
Text
297 lines
8.1 KiB
Text
CLASS::List
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summary::list of items of variable size
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related::Classes/Array
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categories::Collections>Ordered
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DESCRIPTION::
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List is a subclass of SequenceableCollection with unlimited growth in size. Although not a subclass of link::Classes/Array:: or its superclass link::Classes/ArrayedCollection:: it uses an Array in its implementation and is in many cases interchangeable with one. (List implements many of the same methods as Array.)
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Arrays have a fixed maximum size. If you add beyond that size a new Array is created and returned, but you must use an assignment statement or the new array will be lost. (See the link::Classes/Array:: helpfile.) List has no size limitation and is thus more flexible, but has slightly more overhead.
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code::
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(
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x = Array.new(3);
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y = List.new(3);
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5.do({ arg i; z = x.add(i); y.add(i); });
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x.postln; z.postln; y.postln;
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)
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::
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Many of List's methods are inherited from link::Classes/SequenceableCollection:: or link::Classes/Collection:: and are documented in those helpfiles.
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CLASSMETHODS::
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method::new
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Creates a List with the initial capacity given by strong::size::.
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method::newClear
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Creates a List with the initial capacity given by strong::size:: and slots filled with nil.
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method::copyInstance
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Creates a List by copying strong::aList::'s array variable.
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method::newUsing
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Creates a List using strong::anArray::.
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INSTANCEMETHODS::
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method::asArray
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Returns a new link::Classes/Array:: based upon this List.
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method::array
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Returns the List's Array, allowing it to be manipulated directly. This should only be necessary for exotic manipulations not implemented in List or its superclasses.
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code::
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(
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x = List[1, 2, 3];
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x.array.add("foo");
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x.postln;
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)
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::
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method::array
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Sets the List's Array.
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method::at
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Return the item at strong::index::.
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code::
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List[ 1, 2, 3 ].at(0).postln;
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::
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method::clipAt
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Same as link::#-at::, but values for strong::index:: greater than the size of the List will be clipped to the last index.
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code::
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y = List[ 1, 2, 3 ];
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y.clipAt(13).postln;
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::
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method::wrapAt
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Same as link::#-at::, but values for strong::index:: greater than the size of the List will be wrapped around to 0.
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code::
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y = List[ 1, 2, 3 ];
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y.wrapAt(3).postln; // this returns the value at index 0
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y.wrapAt(4).postln; // this returns the value at index 1
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::
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method::foldAt
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Same as link::#-at::, but values for strong::index:: greater than the size of the List will be folded back.
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code::
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y = List[ 1, 2, 3 ];
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y.foldAt(3).postln; // this returns the value at index 1
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y.foldAt(4).postln; // this returns the value at index 0
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y.foldAt(5).postln; // this returns the value at index 1
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::
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method::put
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Put strong::item:: at strong::index::, replacing what is there.
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method::clipPut
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Same as link::#-put::, but values for strong::index:: greater than the size of the List will be clipped to the last index.
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method::wrapPut
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Same as link::#-put::, but values for strong::index:: greater than the size of the List will be wrapped around to 0.
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method::foldPut
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Same as link::#-put::, but values for strong::index:: greater than the size of the List will be folded back.
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method::add
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Adds an strong::item:: to the end of the List.
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method::addFirst
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Inserts the strong::item:: at the beginning of the List.
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method::insert
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Inserts the strong::item:: into the contents of the List at the indicated strong::index::.
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method::pop
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Remove and return the last element of the List.
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method::grow
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Increase the size of the List by strong::sizeIncrease:: number of slots.
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method::removeAt
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Remove and return the element at strong::index::, shrinking the size of the List.
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code::
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y = List[ 1, 2, 3 ];
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y.removeAt(1);
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y.postln;
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::
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method::fill
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Inserts the item into the contents of the receiver, possibly returning a new collection. note::the difference between this and link::Classes/Collection#fill#Collection's *fill::.::
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code::
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(
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var z;
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z = List[1, 2, 3, 4];
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z.fill(4).postln;
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z.fill([1,2,3,4]).postln;
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)
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::
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method::do
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Iterate over the elements in order, calling the function for each element. The function is passed two arguments, the element and an index.
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code::
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List['a', 'b', 'c'].do({ arg item, i; [i, item].postln; });
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::
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method::reverseDo
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Iterate over the elements in reverse order, calling the function for each element. The function is passed two arguments, the element and an index.
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code::
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List['a', 'b', 'c'].reverseDo({ arg item, i; [i, item].postln; });
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::
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method::pairsDo
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Calls function for each subsequent pair of elements in the List. The function is passed the two elements and an index.
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code::
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List[1, 2, 3, 4, 5, 6].pairsDo({ arg a, b; [a, b].postln; });
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::
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method::copyRange
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Return a new List which is a copy of the indexed slots of the receiver from start to end.
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code::
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(
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var y, z;
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z = List[1, 2, 3, 4, 5];
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y = z.copyRange(1,3);
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z.postln;
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y.postln;
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)
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::
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method::copySeries
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Return a new List consisting of the values starting at strong::first::, then every step of the distance between strong::first:: and strong::second::, up until strong::last::.
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code::
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(
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var y, z;
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z = List[1, 2, 3, 4, 5, 6];
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y = z.copySeries(0, 2, 5);
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y.postln;
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)
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::
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method::putSeries
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Put strong::value:: at every index starting at strong::first::, then every step of the distance between strong::first:: and strong::second::, up until strong::last::.
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code::
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(
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var y, z;
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z = List[1, 2, 3, 4, 5, 6];
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y = z.putSeries(0, 2, 5, "foo");
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y.postln;
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)
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::
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method::reverse
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Return a new List whose elements are reversed.
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code::
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(
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var y, z;
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z = List[1, 2, 3, 4];
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y = z.reverse;
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z.postln;
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y.postln;
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)
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::
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method::scramble
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Returns a new List whose elements have been scrambled. The receiver is unchanged.
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code::
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List[1, 2, 3, 4, 5, 6].scramble.postln;
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::
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method::mirror
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Return a new List which is the receiver made into a palindrome. The receiver is unchanged.
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code::
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List[1, 2, 3, 4].mirror.postln;
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::
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method::mirror1
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Return a new List which is the receiver made into a palindrome with the last element removed. This is useful if the list will be repeated cyclically, the first element will not get played twice. The receiver is unchanged.
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code::
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List[1, 2, 3, 4].mirror1.postln;
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::
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method::mirror2
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Return a new List which is the receiver concatenated with a reversal of itself. The center element is duplicated. The receiver is unchanged.
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code::
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List[1, 2, 3, 4].mirror2.postln;
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::
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method::stutter
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Return a new List whose elements are repeated strong::n:: times. The receiver is unchanged.
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code::
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List[1, 2, 3].stutter(2).postln;
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::
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rotate
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Return a new List whose elements are in rotated order. Negative strong::n:: values rotate left, positive strong::n:: values rotate right. The receiver is unchanged.
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code::
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List[1, 2, 3, 4, 5].rotate(1).postln;
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List[1, 2, 3, 4, 5].rotate(-1).postln;
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List[1, 2, 3, 4, 5].rotate(3).postln;
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::
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method::pyramid
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Return a new List whose elements have been reordered via one of 10 "counting" algorithms. The algorithms are numbered 1 through 10. Run the examples to see the algorithms.
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code::
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List[1, 2, 3, 4].pyramid(1).postln;
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(
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10.do({ arg i;
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List[1, 2, 3, 4].pyramid(i + 1).postcs;
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});
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)
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::
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method::lace
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Returns a new List whose elements are interlaced sequences of the elements of the receiver's subcollections, up to size strong::length::. The receiver is unchanged.
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code::
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(
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x = List[ [1, 2, 3], 6, List["foo", 'bar']];
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y = x.lace(12);
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x.postln;
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y.postln;
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)
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::
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method::permute
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Returns a new List whose elements are the strong::nthPermutation:: of the elements of the receiver. The receiver is unchanged.
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code::
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(
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x = List[ 1, 2, 3];
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6.do({|i| x.permute(i).postln;});
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)
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::
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method::wrapExtend
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Returns a new List whose elements are repeated sequences of the receiver, up to size strong::length::. The receiver is unchanged.
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code::
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(
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x = List[ 1, 2, 3, "foo", 'bar' ];
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y = x.wrapExtend(9);
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x.postln;
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y.postln;
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)
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::
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method::foldExtend
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Same as link::#-wrapExtend:: but the sequences fold back on the list elements.
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code::
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(
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x = List[ 1, 2, "foo"];
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y = x.foldExtend(9);
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x.postln;
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y.postln;
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)
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::
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method::slide
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Return a new List whose elements are repeated subsequences from the receiver. Easier to demonstrate than explain.
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code::
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List[1, 2, 3, 4, 5, 6].slide(3, 1).postcs;
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List[1, 2, 3, 4, 5, 6].slide(3, 2).postcs;
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List[1, 2, 3, 4, 5, 6].slide(4, 1).postcs;
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::
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method::dump
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Dump the List's Array.
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method::clear
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Replace the List's Array with a new empty one.
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