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How does functools partial do what it does?
...port partial
p_euclid_dist = partial(euclid_dist, target)
p_euclid_dist now accepts a single argument,
>>> p_euclid_dist((3, 3))
1.4142135623730951
so now you can sort your data by passing in the partial function for the sort method's key argument:
data.sort(key=p_euclid_dist)
# ...
hasNext in Python iterators?
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@Giorgio, there is no way to know whether another element exists without executing the code that generates it (you don't know whether the generator will execute yield or not). It is, of course, not difficult to write an adaptor that stores the result of n...
How to list imported modules?
...like 'import %s as %s' % (val.__name__, name) where the yield statement is now.
– André C. Andersen
May 7 '17 at 19:30
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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...ve-c-literals-for-nsdictionary-nsarray-and:
Objective-C literals: one can now create literals for NSArray, NSDictionary, and NSNumber (just like one can create literals for NSString)
NSArray Literals
Previously:
array = [NSArray arrayWithObjects:a, b, c, nil];
Now:
array = @[ a, b, c ];
NSD...
Is there a range class in C++11 for use with range based for loops?
...ace. range-v3 was always sort-of the reference implementation I'd say. But now I believe the basic range stuff has also recently been voted into C++20, so we will indeed get it in std:: soon! :-)
– Ela782
Jan 3 '19 at 11:56
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Python: reload component Y imported with 'from X import Y'?
... Wow. I found this really handy. Thanks! I use this as one liner now: import X; reload( X ); from X import Y
– otterb
Apr 23 '14 at 22:26
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Python - Get path of root project structure
...path(__file__)) # This is your Project Root
Thus, with the Project Root known, you can create a variable that points to the location of the configuration (this can be defined anywhere, but a logical place would be to put it in a location where constants are defined - e.g. definitions.py):
CONFIG_...
What is the difference between save and insert in Mongo DB?
...e save will do -> It will do normal insertion
upsert to insert.Now in this case as insert() do.
what that means, it means
take the document and replace
the complete document having same
_id.
Let us consider the two cases here for insert:-
1) Having _id of...
Locking a file in Python
...ired.")
with open("myfile.txt"):
# work with the file as it is now locked
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Checking if form has been submitted - PHP
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Ideally now you should use if (null !== (filter_input(INPUT_POST, 'macaddress'))){ which gets you in the habit of using filter_input
– depicus
Feb 20 '15 at 9:46
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