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How to create named and latest tag in Docker?
... answered Jan 16 '15 at 16:05
2Fast2BCn2Fast2BCn
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What are the lesser known but useful data structures?
... more useful when checking for negatives. For example, you can use it as a fast and small (in terms of memory usage) spell checker. Add all of the words to it and then try to look up words the user enters. If you get a negative it means it's misspelled. Then you can run some more expensive check to ...
Most efficient way to increment a Map value in Java
...ks--so I decided to run some tests and figure out which method is actually fastest. The five methods I tested are these:
the "ContainsKey" method that I presented in the question
the "TestForNull" method suggested by Aleksandar Dimitrov
the "AtomicLong" method suggested by Hank Gay
the "Trove" met...
Remove an element from a Bash array
...tution on an array, or (2) iterating over the array elements. The first is fast, but can only deal with elements that have distinct prefix, the second has O(n*k), n=array size, k=elements to remove. Associative array are relative new feature, and might not have been common when the question was orig...
Why is processing a sorted array slower than an unsorted array?
...hat "for TotalCount around 10,000 or less, the sorted version does perform faster". This is because a small list fits entirely into the CPU cache. The memory accesses might be unpredictable but the target is always in cache. I believe there is still a small penalty because even a load from cache tak...
Why use iterators instead of array indices?
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The first form is efficient only if vector.size() is a fast operation. This is true for vectors, but not for lists, for example. Also, what are you planning to do within the body of the loop? If you plan on accessing the elements as in
T elem = some_vector[i];
then you're m...
Rename master branch for both local and remote Git repositories
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Make sure that the remote config file has "denyNonFastforwards = false" or you will get "remote: error: denying non-fast-forward refs/heads/master (you should pull first)"
– gjcamann
May 28 '14 at 13:57
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Android emulator freezing OS X v10.9 (Mavericks) with HAXM
... worked for my emulator on Mavericks. "HAX is working and emulator runs in fast virt mode" such a beautiful thing to see--thing runs like 50x faster
– michaelsnowden
Nov 14 '13 at 18:43
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Which is better in python, del or delattr?
... del foo.bar compiles to two bytecode instructions:
2 0 LOAD_FAST 0 (foo)
3 DELETE_ATTR 0 (bar)
whereas delattr(foo, "bar") takes five:
2 0 LOAD_GLOBAL 0 (delattr)
3 LOAD_FAST 0 (foo)
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Number of occurrences of a character in a string [duplicate]
... overheads in .Net. I would go with the second approach, and if that's not fast enough then write a for loop.
– Niall Connaughton
Dec 1 '16 at 1:45
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