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equals vs Arrays.equals in Java
...or purists: it's perfectly fine, and that also means, don't use it, ever.
Now the expected behaviour for equals is to compare data. The default behaviour is to compare the identity, as Object does not have any data (for purists: yes it has, but it's not the point); assumption is, if you need equals...
how can you easily check if access is denied for a file in .NET?
... to open it. A change is even more likely if you're in an area where you know you need to check first. Yet strangely enough it will never happen in your testing or development environments, which tend to be fairly static. This makes the problem difficult to track down later and makes it easy for ...
Homebrew: List only installed top level formulas
...s actually required on my system by mysql-connector-c++. Do you happen to know if this is intentional (like if brew is keeping which formulae is installed directly not only if it's a depedency or not)?
– Haralan Dobrev
Apr 1 '14 at 19:36
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How to identify numpy types in python?
...umpyish, add an or to test for that. And so on. The point is, you have to know what you're actually asking for when you want to do something as unusual as loose manual type switching, but once you know, it's easy to implement.
– abarnert
Mar 11 '16 at 20:41
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Recursive lambda functions in C++11
...ever it's initialized with, but what you're initializing it with needs to know what its type is (in this case, the lambda closure needs to know the types it's capturing). Something of a chicken-and-egg problem.
On the other hand, a fully specified function object's type doesn't need to "know" anyt...
How to convert JSON to XML or XML to JSON?
... do the conversion and was considering skipping the c# middle objects, but now not so sure. I would need to generate c# objects based on the XSD otherwise and since it would be purely only for conversion purposes it seemed like a wasted layer (and effort). If you have examples or more detail of ho...
How do I achieve the theoretical maximum of 4 FLOPs per cycle?
... is 8 flops * 4 cores * 4.4 GHz = 140.8 GFlops. Actual is 138.2 GFlops.
Now for some explanations:
The performance critical part is obviously the 48 instructions inside the inner loop. You'll notice that it's broken into 4 blocks of 12 instructions each. Each of these 12 instructions blocks are ...
Populating a database in a Laravel migration file
...
I know this is an old post but since it comes up in a google search I thought I'd share some knowledge here. @erin-geyer pointed out that mixing migrations and seeders can create headaches and @justamartin countered that sometim...
How do you echo a 4-digit Unicode character in Bash?
... That's true. I discovered i was using LANG=C instead of LANG=en_US.UTF-8. Now my terminals in Gnome show the symbols properly... The real terminals (tty1-6) still don't though.
– trusktr
Oct 3 '12 at 0:09
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sort object properties and JSON.stringify
...b. That way, all the recursion complexity is handled by stringify, and we know that it knows its stuff, and how to handle each object type :
function JSONstringifyOrder( obj, space )
{
var allKeys = [];
JSON.stringify( obj, function( key, value ){ allKeys.push( key ); return value; } )
...