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Using getopts to process long and short command line options
...her the -m 4096 or -m4096 style, mix options and non-options in any order, etc. getopt also outputs an error message if unrecognized or ambiguous options are found.
NOTE: There are actually two totally different versions of getopt, basic getopt and GNU getopt, with different features and different...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...will be lost. I.e. if t2 and t3 throws exception, only t2 will be catched; etc. The subsequent tasks exceptions will go unobserved.
Where as in the WhenAll - if any or all of the tasks fault, the resulting task will contain all of the exceptions. The await keyword still always re-throws the first ...
Does Java casting introduce overhead? Why?
...(table of method pointers, plus table of class hierarchy, interface cache, etc) don't change. So the [class] cast checks the type, and if it fits nothing else has to happen.
– Tom Hawtin - tackline
Jan 12 '12 at 20:31
...
What are queues in jQuery?
...ts[0].geometry.location;
map.setZoom(13);
map.setCenter(location);
new google.maps.Marker({ map: map, position: location });
}
// geocoder result returned, continue with animations:
next();
}
});
// after we find s...
Why am I getting a “401 Unauthorized” error in Maven?
...get a 401 Unauthorized error if you supply the wrong credentials (password etc). You also get an error (and off the top of my head is also a 401) if you try to publish something to a releases repository and that version already exists in the repository. So you might find that by publishing from th...
What really is a deque in STL?
...push_Front happens you just push at the end i.e. at position 999, then 998 etc. until the two ends meet. Then you reallocate (with exponential growth to guarantee amortizet constant times) just like you would do with a ordinary vector. So effectively you just need one additional pointer to first el....
Erlang's 99.9999999% (nine nines) reliability
...oesn't matter how many times you swap code modules, restart failed modules etc. as long as the ATM switch process itself doesn't stop. Like youtube - the download can pause for seconds - but as long as you have sufficient buffer the video still plays :)
– NPSF3000
...
What is the proper REST response code for a valid request but an empty data?
... 404:
200 should be returned with the body of whatever you successfully fetched. Not appropriate when the entity you're fetching doesn't exist.
202 is used when the server has begun work on an object but the object isn't fully ready yet. Certainly not the case here. You haven't begun, nor will ...
Undefined, unspecified and implementation-defined behavior
...many "things" are left
undefined, unspecified,
implementation-defined, etc. However,
that's easy to say and even to give
examples of, but hard to fix. It
should also be noted that it is not
all that difficult to avoid most of
the problems and produce portable
code.
...
What is the use of interface constants?
...r because you do not need to worry about static, final, empty constructor, etc, and it will NOT cause any bad design issue. The only downside I can think of is that it still has the name of "interface", but nothing more than that.
Never-ending debate
At the end, I think everyone is just quoting from...