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Is there a way to iterate over a range of integers?
Go's range can iterate over maps and slices, but I was wondering if there is a way to iterate over a range of numbers, something like this:
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Change values while iterating
...o, the abbreviation you want is not possible.
The reason for this is that range copies the values from the slice you're iterating over.
The specification about range says:
Range expression 1st value 2nd value (if 2nd variable is present)
array or slice a [n...
How I can I lazily read multiple JSON values from a file/stream in Python?
... That re won't work - the backslashes need escaping. Consider a raw string r'...'.
– Tom Swirly
Jun 19 '17 at 9:48
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Using an ORM or plain SQL? [closed]
...Like in JPA there are some queries that simply aren't possible that are in raw SQL and when you have to use raw SQL in JPA it's not pretty (C#/.Net at least has dynamic types--var--which is a lot nicer than an Object array);
There are an awful lot of "gotchas" when using ORMs. This includes uninten...
Way to get all alphabetic chars in an array in PHP?
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$alphas = range('A', 'Z');
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Using switch statement with a range of value in each case?
... works great and is simple. Also if you want to select numbers not in the range all you need is if(!isBetween... , good job.
– a54studio
Jul 20 '13 at 13:43
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Random string generation with upper case letters and digits
...e:
''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N))
or even shorter starting with Python 3.6 using random.choices():
''.join(random.choices(string.ascii_uppercase + string.digits, k=N))
A cryptographically more secure version; see https://stackoverflow.com/a/237...
Array or List in Java. Which is faster?
...our experience, are there any such choices in Java between abstraction and raw data forms that do make a significant difference in performance ?
– euphoria83
Apr 4 '09 at 17:53
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How to get all subsets of a set? (powerset)
... list(iterable)
return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
Output:
>>> list(powerset("abcd"))
[(), ('a',), ('b',), ('c',), ('d',), ('a', 'b'), ('a', 'c'), ('a', 'd'), ('b', 'c'), ('b', 'd'), ('c', 'd'), ('a', 'b', 'c'), ('a', 'b', 'd'), ('a', 'c', 'd'), (...
Is it good practice to NULL a pointer after deleting it?
... So you're making the argument that there shouldn't have been a raw pointer in the first place, and anything involving said pointer shouldn't be blessed with the term "good practice"? Fair enough.
– Mark Ransom
Dec 18 '09 at 23:09
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