大约有 30,000 项符合查询结果（耗时：0.0385秒） [XML]
Constructor function vs Factory functions
...an't forget new with a class constructor, or the constructor will throw an error.
If you do the instanceof check, it leaves ambiguity as to whether or not new is required. In my opinion, it shouldn't be. You've effectively short circuited the new requirement, which means you could erase drawback #1....
How to schedule a periodic task in Java?
...sk process
} catch (Exception ex) {
System.out.println("error running thread " + ex.getMessage());
}
}
}
then in main class you instantiate the task and run it periodically started by a specified date:
public void runTask() {
Calendar calendar = Calendar.ge...
Multiple arguments vs. options object
...xplicit documentation to specify intent, but it also leaves room for vague errors.
What if a developer modifies param1 in bar()? How long do you think it would take looking through a codebase of sufficident size to catch this?
Admittedly, this is example is slightly disingenuous because it assumes d...
How to sort with a lambda?
...in place of binding an instance method. However, the code above yields the error:
3 Answers
...
How to reverse a singly linked list using only two pointers?
...
I'm not sure about 'obvious errors' in the original. Design-wise, not passing the head of the list in and not returning the new head is a bad idea. The only bug, though, is the last line in the reverse() function should be setting first, I believe. O...
What is the Java ?: operator called and what does it do?
...th branches must lead to methods with return values:
It is a compile-time error for either the second or the third operand expression to be an invocation of a void method.
In fact, by the grammar of expression statements (§14.8), it is not permitted for a conditional expression to appear in any co...
How should one use std::optional?
...archy, instead of passing around some "phantom" value "assumed" to have a "error" meaning.
– Luis Machuca
Oct 3 '13 at 16:35
1
...
What is the !! (not not) operator in JavaScript?
...he HTML5 <audio> element, but we don't want the function to throw an error if <audio> is undefined; and we don't want to use try ... catch to handle any possible errors (because they're gross); and also we don't want to use a check inside the function that won't consistently reveal the t...
Subclassing a Java Builder class
...stead of extends, or (c) throw everything away. I now have a weird compile error where leafBuilder.leaf().leaf() and leafBuilder.mid().leaf() is OK, but leafBuilder.leaf().mid().leaf() fails...
– Ken Y-N
Jun 19 '13 at 4:01
...
How do I measure execution time of a command on the Windows command line?
... FYI - I don't think timeit works on Windows 7 64-bit. You get the error "Unable to query system performance data (c0000004). Instead, use PowerShell's "Measure-Command" like Casey.K suggests: stackoverflow.com/questions/673523/…
– Michael La Voie
Oc...