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How do you test functions and closures for equality?
...If "===" were defined on
functions, the compiler would not be allowed to merge identical method
bodies, share thunks, and perform certain capture optimizations in
closures. Further, equality of this sort would be extremely
surprising in some generics contexts, where you can get reabstractio...
How do you create a static class in C++?
How do you create a static class in C++? I should be able to do something like:
13 Answers
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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
... on. So the browser is blocking it as it usually allows a request in the same origin for security reasons. You need to do something different when you want to do a cross-domain request. A tutorial about how to achieve that is Using CORS.
When you are using postman they are not restricted by this po...
What's the difference between HEAD^ and HEAD~ in Git?
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Rules of thumb
Use ~ most of the time — to go back a number of generations, usually what you want
Use ^ on merge commits — because they have two or more (immediate) parents
Mnemonics:
Tilde ~ is almost linear in appearance and wants to go backward in a s...
Does Python optimize tail recursion?
... return csum
... n, csum = n - 1, csum + n # Update parameters instead of tail recursion
>>> trisum(1000,0)
500500
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What is the difference between trie and radix trie data structures?
Are the trie and radix trie data structures the same thing?
3 Answers
3
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Counting inversions in an array
... i < j , find all inversion pairs such that A[i] > A[j] . I'm using merge sort and copying array A to array B and then comparing the two arrays, but I'm having a difficult time seeing how I can use this to find the number of inversions. Any hints or help would be greatly appreciated.
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How to get my IP address programmatically on iOS/macOS?
...ll IPv4 and IPv6 addresses on an iOS or OSX device. The first getIPAddress method acts more or less as the older code in this answer: you can prefer either one or the other type address, and it always prefers WIFI over cellular (obviously you could change this).
More interestingly it can return a d...
Meaning of Git checkout double dashes
What is the meaning of the double dashes before the file name in this git command?
3 Answers
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Does C# have extension properties?
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For the moment it is still not supported out of the box by Roslyn compiler ...
Until now, the extension properties were not seen as valuable enough to be included in the previous versions of C# standard. C# 7 and C# 8.0 have seen this...