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Finding differences between elements of a list
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You can use itertools.tee and zip to efficiently build the result:
from itertools import tee
# python2 only:
#from itertools import izip as zip
def differences(seq):
iterable, copied = tee(seq)
next(copied)
for x, y in zip(iterable, copied):
yield y - x
Or using iterto...
performing HTTP requests with cURL (using PROXY)
..._proxy=http://your.proxy.server:port/
Then you can connect through proxy from (many) application.
And, as per comment below, for https:
export https_proxy=https://your.proxy.server:port/
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How do you do Impersonation in .NET?
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That link from the Dutch programmer's blog was excellent. Much more intuitive approach to impersonation than the other techniques presented.
– code4life
Aug 22 '16 at 23:26
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How to programmatically cause a core dump in C/C++
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The hint to ulimit -c unlimited from Suvesh Pratapa answer, helped my a lot for this answer.
– Boris Däppen
Feb 11 '19 at 18:22
add...
Understanding PrimeFaces process/update and JSF f:ajax execute/render attributes
...n errors on other input components are preventing the ajax listener method from being executed.
Then there's the @all. This has no special effect in process attribute, but only in update attribute. A process="@all" behaves exactly the same as process="@form". HTML doesn't support submitting multiple...
Why is the use of alloca() not considered good practice?
...k rather than on the heap, as in the case of malloc() . So, when I return from the routine the memory is freed. So, actually this solves my problem of freeing up dynamically allocated memory. Freeing of memory allocated through malloc() is a major headache and if somehow missed leads to all sorts...
Task continuation on UI thread
...standard' way to specify that a task continuation should run on the thread from which the initial task was created?
5 Answe...
Skip first entry in for loop in python?
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The best way to skip the first item(s) is:
from itertools import islice
for car in islice(cars, 1, None):
# do something
islice in this case is invoked with a start-point of 1, and an end point of None, signifying the end of the iterator.
To be able to skip ite...
How to get image height and width using java?
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From all I'm reading, this reads the entire image into memory. Which is extreme just to get width and height.
– Marc
May 17 '15 at 20:07
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Const before or const after?
...ined the grammar in this way was likely that their C compiler parsed input from left-to-right and finished processing each token as it consumed that. Consuming the * token changes the state of the current declaration to a pointer type. Encountering const after * means the const qualifier is applie...