大约有 45,000 项符合查询结果（耗时：0.0526秒） [XML]
The written versions of the logical operators
...st program in NetBeans, I got the red underlining as if there was a syntax error and figured the website was wrong, but it is NetBeans which is wrong because it compiled and ran as expected.
...
Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()
...ough the docs..the problem is...fixedThreadPool is causing a out of memory error @ 3 threads.. where as cachedPool is internally creating only a single thread..on increasing the heap size i am getting the same performance for both..is there anything else i am missing!!
– hakis...
Use of 'const' for function parameters
...o write int getDouble( const int a ){ //... } that will generate a compile error when finding ++a;.
– dom_beau
Mar 27 '17 at 3:58
...
Understanding Python super() with __init__() methods [duplicate]
... do the following, which another answer suggests, as you'll definitely get errors when you subclass ChildB:
super(self.__class__, self).__init__() # DON'T DO THIS! EVER.
(That answer is not clever or particularly interesting, but in spite of direct criticism in the comments and over 17 downvotes...
What does this square bracket and parenthesis bracket notation mean [first1,last1)?
... Pascal are one-based.
These differences can lead to subtle fence post errors, aka, off-by-one bugs when implementing Mathematical algorithms such as for-loops.
Integers
If we have a set or array, say of the first few primes [ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 ], Mathematicians would refer t...
Why Func instead of Predicate?
...delegate with identical declaration!
ExceptionHandler2 x2 = x1; // error at compile time
}
By encouraging everyone to use Func, Microsoft is hoping that this will alleviate the problem of incompatible delegate types. Everyone's delegates will play nicely together, because they will jus...
vs
...le.com/">Example Site</a></p>
Consistency helps to reduce errors and make code more readable.
Note that the charset attribute is case-insensitive. You can use UTF-8 or utf-8, however UTF-8 is clearer, more readable, more accurate.
Also, there is absolutely no reason at all to use ...
Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...效，否则填完以下install配置后，会出现错误"bin/postconf: error while loading shared libraries: libmysqlclient.so.18: cannot open shared object file: No such file or directory"。
若postfix报错postfix: fatal: parameter inet_interfaces: no local interface found for ::1
则 vi /et...
RRSet of type CNAME with DNS name foo.com. is not permitted at apex in zone bar.com
...set up a CNAME record for bar.com pointing to foo.com , but I got the error message:
5 Answers
...
What is the logic behind the “using” keyword in C++?
...ve
using P = [](double)->void; // using plus suffix return type, syntax error
using P = auto(double)->void // Fixed thanks to DyP
Pre-C++11, the using keyword can bring member functions into scope. In C++11, you can now do this for constructors (another Bjarne Stroustrup example):
class Deriv...