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Which is more efficient, a for-each loop, or an iterator?
...odifiers(opt) Type Identifier = #i.next();
Statement
}
In other words, it is required by the JLS that the two are equivalent. In theory that could mean marginal differences in bytecode, but in reality the enhanced for loop is required to:
Invoke the .iterator() method
Use .hasNext()
Mak...
Append an object to a list in R in amortized constant time, O(1)?
...208.011525 206.4490 208.279580 215.841129 5
>
First of all, a word about the min/lq/mean/median/uq/max values: Since we are performing the exact same task for each of 5 runs, in an ideal world, we could expect that it would take exactly the same amount of time for each run. But the firs...
Why doesn't Java allow generic subclasses of Throwable?
... What do you mean when you say 'reifiable'? 'reifiable' is not a word.
– ForYourOwnGood
Feb 1 '09 at 18:53
1
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HTML 5 tag vs Flash video. What are the pros and cons?
...there could be an accepted answer to this question, but I think that these words of wisdom deserve to be on the top.
– Vilx-
Oct 26 '10 at 17:53
add a comment
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Handling InterruptedException in Java
...program crash with a stack trace due to an InterruptedException). In other words, it does not make sense to declare this method with throws InterruptedException.
void printSum(Server server) {
try {
int sum = computeSum(server);
System.out.println("Sum: " + sum);
} catch...
Git cherry pick vs rebase
...by both "experiment" and "master" (what's the point of diversion, in other words). This is C2.
Saves away all the commits made since the diversion point; in our toy example, it's just C3.
Rewinds the HEAD (which points to the tip commit of "experiment" before the operation starts to run) to point to...
What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
...ch magic territory. I've been struggling with this issue and when followed word by word for a @OneToOne, the child rows get updated with a null in their FKey column that references the parent.
– Ashesh
Mar 5 '16 at 17:59
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Why should we typedef a struct so often in C?
... return a;
}
becomes cleaner when you don't need to see the "struct" keyword all over the place, it looks more as if there really is a type called "Point" in your language. Which, after the typedef, is the case I guess.
Also note that while your example (and mine) omitted naming the struct itse...
Is the != check thread safe?
...orrect (from the perspective of the application's requirements). In other words, the set of possible behaviours (i.e. the set of "well-formed executions") is defined, but we can't say which of those behaviours will occur.
The compiler is allowed to combine and reorder loads and save (and do other ...
Java generics type erasure: when and what happens?
...ve this information at runtime, despite in a very restricted way. In other words: Java does provide reified generics in a very restricted way.
Regarding type erasure
Notice that, at compile-time, the compiler has full type information available but this information is intentionally dropped in gene...