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Python argparse mutual exclusive group
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Please note that in this case you would also need to validate the cases like: (1) both q and f are required in first group is user, (2) either of the groups is required. And this makes "simple" solution not so simple any more. So I would agree that this is more hack for handcrafte...
Why should I use tags vs. release/beta branches for versioning?
...re to implement it once I understand it. I guess with a tag, you cannot accidentally change the code, commit, and still be at the same version. With branches, it may inadvertently happen. Tags seem to be a safer way of marking releases.
– wufoo
Mar 21 '12 at 18...
Difference between add(), replace(), and addToBackStack()
...ter popped off the stack.
2) fragmentTransaction.replace(int containerViewId, Fragment fragment, String tag)
Description - Replace an existing fragment that was added to a container. This is essentially the same as calling remove(Fragment) for all currently added fragments that were added with the...
What do the different readystates in XMLHttpRequest mean, and how can I use them?
...nswered Jan 9 '18 at 9:55
Khurshid AnsariKhurshid Ansari
2,66811 gold badge2020 silver badges3434 bronze badges
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How to print binary tree diagram?
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n23.left = n33;
return root;
}
public static void main(String[] args) {
BTreePrinter.printNode(test1());
BTreePrinter.printNode(test2());
}
}
class Node<T extends Comparable<?>> {
Node<T> left, right;
T data;
public No...
what is the difference between ?:, ?! and ?= in regex?
...ing group and analyse each behaviour.
() capturing group - the regex inside the parenthesis must be matched and the match create a capturing group
(?:) non capturing group - the regex inside the parenthesis must be matched but doesn't not create the capturing group
(?=) positive look ahead - a...
Implementing slicing in __getitem__
...key) #Get the data from elsewhere
else:
raise TypeError, "Invalid argument type."
The slice doesn't return the same type, which is a no-no, but it works for me.
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Efficient evaluation of a function at every cell of a NumPy array
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I am afraid that the vectorized function cannot be faster than the "manual" double loop iteration and assignment through all the array elements. Especially, because it stores the result to a newly created variable (and not directly to...
What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
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long and long int are identical. So are long long and long long int. In both cases, the int is optional.
As to the difference between the two sets, the C++ standard mandates minimum ranges for each, and that long long is at least as wide as long....
Cleanest and most Pythonic way to get tomorrow's date?
... of the week that March 3rd, 2055 will land on.
– David Woods
Mar 4 '13 at 14:04
1
@DavidWoods: l...