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What is the most effective way for float and double comparison?
...hen looking at floating point comparison.
The following definitions are from The art of computer programming by Knuth:
bool approximatelyEqual(float a, float b, float epsilon)
{
return fabs(a - b) <= ( (fabs(a) < fabs(b) ? fabs(b) : fabs(a)) * epsilon);
}
bool essentiallyEqual(float ...
How do I parse a string with a decimal point to a double?
...lso use customized regional settings where I changed the decimal separator from ',' to '.' and list separator from ';' to ','. You know, cause csv... Good luck to us all writing multi-culture apps ;)
– Steven Spark
Jun 22 '18 at 13:15
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What is Bootstrap?
...s" provided in the answer above. Copy/pasting the definition of Bootstrap from their website is obviously useless given that the user who posted the question clearly mentioned having looked at the bootstrap website. I don't think that seeing the same text from their website would make more sense si...
Adding two numbers concatenates them instead of calculating the sum
...hey are actually strings, not numbers. The easiest way to produce a number from a string is to prepend it with +:
var x = +y + +z;
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Behaviour of final static method
... be redirected to the one in B.
The keyword final will disable the method from being hidden. So they cannot be hidden and an attempt to do so will result in a compiler error.
Hope this helps.
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Clojure: reduce vs. apply
...which it would be silly to replicate in every function which might benefit from them in the vararg case. In such common cases, apply will just add a little overhead. (Note it's nothing to be really worried about.)
On the other hand, a complex function might take advantage of some optimisation oppor...
I want to execute shell commands from Maven's pom.xml
... same code in a child module. And I am trying to execute the mvn exec:exec from the parent pom.xml. And i get this error. But when i individually execute it it is working.
– NareshKumar
Aug 17 '10 at 5:04
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Booleans, conditional operators and autoboxing
... of returnsNull()) to make it type boolean. This of course causes the NPE from the null returned at run-time.
For E2, types of the 2nd and 3rd operands are <special null type> (not Boolean as in E1!) and boolean respectively, so no specific typing clause applies (go read 'em!), so the final "...
C++ display stack trace on exception
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the post you link to mostly points to generating a trace from a segfault, but the asker specifically mentions exceptions, which are quite a different beast.
– Shep
Mar 13 '14 at 14:29
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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...onship with cascading delete enabled by default again it will then cascade from Card to Side
So, you have two cascading delete paths from Stage to Side - which causes the exception.
You must either make the Stage optional in at least one of the entities (i.e. remove the [Required] attribute from ...