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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...
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...
How to delete an object by id with entity framework
..."A FROM clause is currently not supported in a DELETE statement.". But the raw SQL as in Jonik's answer works.
– Michael Freidgeim
Sep 8 '16 at 11:34
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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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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'), (...
jQuery : eq() vs get()
... which means that it accepts jQuery functions.
.get() returns an array of raw DOM elements. You may manipulate each of them by accessing its attributes and invoking its functions as you would on a raw DOM element. But it loses its identity as a jQuery-wrapped object, so a jQuery function like .fade...
What is the maximum length of a table name in Oracle?
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LOW_VALUE RAW(32)
HIGH_VALUE RAW(32)
DENSITY NUMBER
NUM_NULLS ...
Index all *except* one item in python
...st comp. For example, to make b a copy of a without the 3rd element:
a = range(10)[::-1] # [9, 8, 7, 6, 5, 4, 3, 2, 1, 0]
b = [x for i,x in enumerate(a) if i!=3] # [9, 8, 7, 5, 4, 3, 2, 1, 0]
This is very general, and can be used with all iterables, including numpy arrays...
What is the difference between “JPG” / “JPEG” / “PNG” / “BMP” / “GIF” / “TIFF” Image?
... allow for 5 to 25 percent greater compression than GIFs, and with a wider range of colors. PNGs use two-dimensional interlacing, which makes them load twice as fast as GIF images.”
3 Image that has a lot of colors or requires advanced variable transparency, PNG is the preferred file type.
GIF &...