Creating implementation for idiom 353 : Test if list is sorted

Idiom

# 353 Test if list is sorted

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Set the boolean b to true if the list items has all its elements in increasing order, false otherwise.

The order is not strict: the ordered list may contain duplicate elements.

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Other implementations

import "slices"

b := slices.IsSorted(items)

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classes

b := items.sorted and (items.count > 1) and (items[0] < items[1]);

b = sorted(items) == items

from itertools import pairwise

b = all(x<=y for x,y in pairwise(items))

b = items.each_cons(2).all?{ _1 <= _2 }

Demo
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b = items.each_cons(2).all?{|a,b| a <= b }

let b = items.is_sorted();

Demo

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