Sets are unordered, mutable collections of unique elements.
Sets have special methods to perform set operations like union, intersection, difference etc. with groups of items.
Set basics
Set basics Creating empty sets Adding and removing items Set operations Union Intersection Difference Symmetric difference Sets are unordered, mutable collections of unique elements. Sets have special methods to perform set operations like union, intersection, difference etc. With groups of items. Set basics Non-empty sets can be created by enclosing a sequence of comma-separated values in. Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine. Passdirector 2 5 2. Latest LTS Version: 12.19.0 (includes npm 6.14.8) Download the Node.js source code or a pre-built installer for your platform, and start developing today.
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Sets are unordered, mutable collections of unique elements.
Sets have special methods to perform set operations like union, intersection, difference etc. with groups of items.
Set basics
Set basics Creating empty sets Adding and removing items Set operations Union Intersection Difference Symmetric difference Sets are unordered, mutable collections of unique elements. Sets have special methods to perform set operations like union, intersection, difference etc. With groups of items. Set basics Non-empty sets can be created by enclosing a sequence of comma-separated values in. Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine. Passdirector 2 5 2. Latest LTS Version: 12.19.0 (includes npm 6.14.8) Download the Node.js source code or a pre-built installer for your platform, and start developing today.
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Non-empty sets can be created by enclosing a sequence of comma-separated values in curly brackets: Parallels desktop business edition 13 1 1 43120 download free.
Sets can also be created from a list or tuple using the set()
constructor. Notice how all items which were duplicated in the list appear only once in the set:
Creating empty sets
Because curly brackets are also used to create dictionaries, it is not possible to create an empty set using braces. An empty pair of braces creates a dictionary, not a set:
Ulysses 2 5 2 download free. To create an empty set, use the set()
constructor:
Adding and removing items
Use set.add()
to add an item to the set:
…and use set.remove()
to remove an item:
Set operations
Sets have special methods to perform boolean operations with other sets.
Union
The union operation returns a new set with elements from both sets:
Intersection
The intersection operation returns a new set with elements which are common to both sets:
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Difference
The difference operation returns a new set with elements which are in the first set and not in the second:
Symmetric difference
Symmetric difference corresponds to the xor
operator in boolean logic. It returns a list of items which are in either one set or another, but not in both.
For the difference
operation, the order of the sets matters. For the other operations, changing the order will not change the result.