ListPlus.py

Overview

ListPlus.py is Scala like list class library for Python.

Requirements

Python >= 3.3.2

Usage

>>> from listplus import List
>>> l = List(range(1, 5))
>>> l.head
1

Methods

get(index)

>>> l = List(range(1, 5))
>>> l.get(1)
2

swap(index, moveto)

>>> l = List(['a', 'b', 'c'])
>>> l.swap(0, 2)
>>> print(l)
['c', 'b', 'a']

forall(expr)

>>> l = List(range(1, 5))
>>> l.forall('_ > 0')
True
>>> l.forall('_ > 3')
False

contains(value)

>>> l = List([1, 2, 3])
>>> l.contains(2)
True
>>> l.contains(5)
False
>>> l = List(['a', 'b', 'c'])
>>> l.contains('b')
True
>>> l.contains('f')
False

apply(index)

>>> l = List([1, 2, 3])
>>> l.apply(2)
3
>>> l.apply(3) is None
True

take(count)

>>> l = List([1, 2, 3])
>>> l.take(2)
[1, 2]
>>> l.take(3)
[1, 2, 3]
>>> l.take(4)
[1, 2, 3]

takeRight(count)

>>> l = List([1, 2, 3])
>>> l.takeRight(2)
[2, 3]
>>> l.takeRight(3)
[1, 2, 3]
>>> l.takeRight(4)
[1, 2, 3]

drop(count)

>>> l = List([1, 2, 3, 4, 5])
>>> l.drop(2)
[3, 4, 5]

dropRight(count)

>>> l = List([1, 2, 3, 4, 5])
>>> l.dropRight(2)
[1, 2, 3]
>>> l = List(['a', 'b', 'c', 'd', 'e'])
>>> l.dropRight(3)
['a', 'b']

Properties

head

>>> l = List(range(1, 5))
>>> l.head
1

tail

>>> l = List(range(1, 5))
>>> l.tail
[2, 3, 4]

init

>>> l = List(range(1, 5))
>>> l.init
[1, 2, 3]

last

>>> l = List(range(1, 5))
>>> l.last
4

length

>>> l = List([1, 2, 3, 4, 5])
>>> print(l.length)
5

min

>>> l = List([1, 2, 3, 4, 5])
>>> print(l.min)
1

max

>>> l = List([1, 2, 3, 4, 5])
>>> print(l.max)
5

size

>>> l = List([1, 2, 3, 4, 5])
>>> print(l.size)
5

isEmpty

>>> l = List()
>>> print(l.isEmpty)
True
>>> l = List([])
>>> print(l.isEmpty)
True
>>> l = List([1])
>>> print(l.isEmpty)
False

sorted

>>> l = List([5, 4, 3, 2, 1])
>>> print(l.sorted)
[1, 2, 3, 4, 5]

reverse

>>> l = List([5, 4, 3, 2, 1])
>>> print(l.reverse)
[1, 2, 3, 4, 5]

sum

>>> l = List([1,2,3])
>>> l.sum
6
>>> l = List([])
>>> l.sum
0

product

>>> l = List([1,2,3])
>>> l.product
9
>>> l = List([])
>>> l.product
0