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How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...ization because you can split the message into chunks, each chunk having a range of counter values associated with it, and encrypt (or decrypt) each chunk independently. By contrast, CFB relies on the output from the previous block as one of the inputs to the next, so it is rigorously sequential an...
Generate random numbers uniformly over an entire range
...perator. That method may not generate numbers uniformly (it depends on the range and the value of RAND_MAX), and is therefore discouraged.
C++11 and generation over a range
With C++11 multiple other options have risen. One of which fits your requirements, for generating a random number in a range, p...
How to limit the maximum value of a numeric field in a Django model?
...is there any way to restrict it to storing only numbers within a certain range, e.g. 0.0-5.0 ?
6 Answers
...
List comprehension: Returning two (or more) items for each item
...mbda x: x ** 2
>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f = lambda x: x + 2
g = lambda x: x ** 2
def fg(x):
yield f(x)
yield g(x)
print timeit(stmt='list(chain.from_iterable((f(x), g(x)) for x in range(...
Why does the PHP json_encode function convert UTF-8 strings to hexadecimal entities?
...lashes itself and specified characters by JSON_HEX_* flags.
function raw_json_encode($input, $flags = 0) {
$fails = implode('|', array_filter(array(
'\\\\',
$flags & JSON_HEX_TAG ? 'u003[CE]' : '',
$flags & JSON_HEX_AMP ? 'u0026' : '',
$flags & J...
Python Sets vs Lists
...(iterable)",
... setup="from __main__ import iter_test; iterable = set(range(10000))",
... number=100000)
12.666952133178711
>>> timeit(
... "iter_test(iterable)",
... setup="from __main__ import iter_test; iterable = list(range(10000))",
... number=100000)
9.91709899902...
What is the largest TCP/IP network port number allowable for IPv4?
...Names and Numbers (ICANN) to a certain use. Each registered port is in the range 1024–49151.
Since 21 March 2001 the registry agency is ICANN; before that time it was IANA.
Ports with numbers lower than those of the registered ports are called well known ports; port with numbers greater than tho...
jQuery UI: Datepicker set year range dropdown to 100 years
...
You can set the year range using this option per documentation here http://api.jqueryui.com/datepicker/#option-yearRange
yearRange: '1950:2013', // specifying a hard coded year range
or this way
yearRange: "-100:+0", // last hundred years
F...
Select data from date range between two dates
... will look like:
SELECT * FROM Product_sales
WHERE NOT (From_date > @RangeTill OR To_date < @RangeFrom)
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QString to char* conversion
...coRico It's not the method toStdString() that's dangerous; it's the use of raw pointers. Or, more specifically, the use of raw pointers from objects whose scopes aren't well-understood.
– notlesh
Oct 20 '19 at 20:23
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