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How can I print the contents of a hash in Perl?
... learn this. Of course, each should be more efficient (because there's no extra hash lookup on the key). But it's ~30% slower!
– Jonathan Graehl
Jul 22 '09 at 8:12
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What is the concept of erasure in generics in Java?
...mpiler generates extra casts where necessary. At execution time, a List<String> and a List<Date> are exactly the same; the extra type information has been erased by the compiler.
Compare this with, say, C#, where the information is retained at execution time, allowing code to contain e...
const char * const versus const char *?
...
The latter prevents you from modifying the_string inside print_string. It would actually be appropriate here, but perhaps the verbosity put off the developer.
char* the_string : I can change which char the_string points to, and I can modify the char to which it points...
How to implement classic sorting algorithms in modern C++?
... cmp = Compare{});
In C++11, one can define a reusable template alias to extract an iterator's value type which adds minor clutter to the sort algorithms' signatures:
template<class It>
using value_type_t = typename std::iterator_traits<It>::value_type;
template<class It, class Co...
Visualizing branch topology in Git
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Might I ask where you got the format string from? Or how on earth you concocted that thing?
– elliotwesoff
Oct 6 '16 at 16:38
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Git: “Not currently on any branch.” Is there an easy way to get back on a branch, while keeping the
... some-branch
git merge ${commit-sha}
If you have committed and then done extra work:
git stash
git log --oneline -n1 # this will give you the SHA
git checkout some-branch
git merge ${commit-sha}
git stash pop
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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...implementation of putStrLn works by copying the characters of the argument String into to an output buffer. But when it enters this loop, show has not run yet. Therefore, when it goes to copy the first character from the string, Haskell evaluates the fraction of the show and quicksort calls needed t...
What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
...tf8_general_ci is fine only for Russian and Bulgarian subset of Cyrillic.
Extra letters used in Belarusian, Macedonian, Serbian, and Ukrainian
are sorted not well.
The cost of utf8_unicode_ci is that it is a little bit
slower than utf8_general_ci. But that’s the price you pay for correctness...
Is 23,148,855,308,184,500 a magic number, or sheer chance?
...ssibly the number hex 1250 = dec 4688 is the minimum to cause some sort of extra methods of fraud checking. If it is exactly equal to this a bug in the code is introduced?
– PeteT
Aug 9 '09 at 4:12
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Use of alloc init instead of new
...selected ones are:
new doesn't support custom initializers (like initWithString)
alloc-init is more explicit than new
General opinion seems to be that you should use whatever you're comfortable with.
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