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Is there a foreach loop in Go?
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https://golang.org/ref/spec#For_range
A "for" statement with a "range" clause iterates through all entries
of an array, slice, string or map, or values received on a channel.
For each entry it assigns iteration values to corresponding iteration
va...
C++11 reverse range-based for-loop
...e direction of iterators so I can iterate over a container in reverse with range-based for-loop?
8 Answers
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JavaScript function similar to Python range()
Is there a function in JavaScript similar to Python's range() ?
23 Answers
23
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Loop backwards using indices in Python?
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Try range(100,-1,-1), the 3rd argument being the increment to use (documented here).
("range" options, start, stop, step are documented here)
share
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How to make my custom type to work with “range-based for loops”?
...ying the different features that C++11 brings. One of my favorites is the "range-based for loops".
8 Answers
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Create an empty list in python with certain size
...ething like l[15] = 5 would still fail, as our list has only 10 elements.
range(x) creates a list from [0, 1, 2, ... x-1]
# 2.X only. Use list(range(10)) in 3.X.
>>> l = range(10)
>>> l
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Using a function to create a list:
>>> def display(...
Does JavaScript have a method like “range()” to generate a range within the supplied bounds?
...(0) + x));
}
=> 0,"A" 1,"B" 2,"C" 3,"D" 4,"E"
As functions
function range(size, startAt = 0) {
return [...Array(size).keys()].map(i => i + startAt);
}
function characterRange(startChar, endChar) {
return String.fromCharCode(...range(endChar.charCodeAt(0) -
startChar.ch...
Dictionary vs Object - which is more efficient and why?
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def __init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all[i] = Obj(i)
test_obj.py:
class Obj(object):
def __init__(self, i):
self.i = i
self.l = []
all = {}
for i in range(1000000):
all[i] = Obj(i)
test_dict.py:
all = {}
for i in range(1000000):
...
Get nth character of a string in Swift programming language
...> Character { self[index(startIndex, offsetBy: offset)] }
subscript(range: Range<Int>) -> SubSequence {
let startIndex = index(self.startIndex, offsetBy: range.lowerBound)
return self[startIndex..<index(startIndex, offsetBy: range.count)]
}
subscript(range:...
Passing a std::array of unknown size to a function
... few steps to do cleanly. First, write a template class that represents a range of contiguous values. Then forward a template version that knows how big the array is to the Impl version that takes this contiguous range.
Finally, implement the contig_range version. Note that for( int& x: rang...