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What does “where T : class, new()” mean?
..., float, double, DateTime or any other struct (value type).
It could be a string, or any other custom reference type, as long as it has a default or parameter-less constructor.
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Are there best practices for (Java) package organization? [closed]
...te as possible. If you have a package called 'utils' with 20 classes, move StringUtils to support/string, HttpUtil to support/http and so on.
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Is there a C++ gdb GUI for Linux? [closed]
...same keyboard shortcuts. It seems to handle templates well, at least std::string and std::map. Attaching to existing processes and core dumps seems to be supported, though I haven't tested it yet.
Keep in mind that I used it for less than and hour now, but I'm impressed so far.
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Why must we define both == and != in C#?
...ach to proving "not equality" than to proving "equality".
Obviously with string comparison, for example, you can just test for equality and return out of the loop when you see nonmatching characters. However, it might not be so clean with more complicated problems. The bloom filter comes to mind; ...
Does a finally block always run?
...led. Is there a catch that I am missing? download.oracle.com/docs/cd/E17476_01/javase/1.5.0/docs/guide/…
– spurserh
Jul 18 '10 at 14:40
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How can I check if a file exists in Perl?
...mething exists at given path using the -e file-test operator.
print "$base_path exists!\n" if -e $base_path;
However, this test is probably broader than you intend. The code above will generate output if a plain file exists at that path, but it will also fire for a directory, a named pipe, a syml...
Adding one day to a date
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You should not use a variable in a string. You should use:date('Y-m-d H:i:s', strtotime($stop_date . ' + 1 day')); as in the answer that @w35l3y gave you.
– Cas Bloem
Feb 12 '14 at 9:52
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Is there an opposite of include? for Ruby Arrays?
...)
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ActiveSupport adds the exclude? method to Array, Hash, and String. This is not pure Ruby, but is used by a LOT of rubyists.
Source: Active Support Core Extensions (Rails Guides)
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In which scenario do I use a particular STL container?
...ous memory (like a C array gives), then you can only use vector, array, or string.
Use array if the size is known at compile time.
What's wrong with using == to compare floats in Java?
...m, that's not a floating point value. That's a floating point literal---a string that compiler converts into a floating point value by doing a calculation.
– Solomon Slow
Nov 6 '15 at 18:24
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