大约有 44,000 项符合查询结果（耗时：0.0509秒） [XML]
How do I use vim registers?
I only know of one instance using registers is via Ctrl R * whereby I paste text from a clipboard.
16 Answers
...
Is there a performance difference between a for loop and a for-each loop?
...
Yes, but that counter is now visible outside of the loop. Sure, it's a simple fix but so is for-each!
– Indolering
Nov 4 '12 at 5:19
...
Most efficient way to check for DBNull and then assign to a variable?
...
Old now, but I've recently seen a number of cases where this was exactly what the profiler said to fix. Imagine evaluating large data sets, where every cell needs to make this check. Optimizing that can can reap big rewards. But ...
Tablix: Repeat header rows on each page not working - Report Builder 3.0
...rows on each page but this does not work. I read somewhere that this is a known bug in Report Builder 3.0. Is this true? If not, is there something else that needs to be done?
...
How to show current year in view?
...
I like to use:
Time.zone.now.year
This takes into account the current timezone (incase you have overridden it for a particular user).
share
|
impr...
Why doesn't Java offer operator overloading?
...sult not-equal. In Java, operator= performs reference copy, so a and b are now referring to the same value. As a result, the comparison will produce 'equal', since the object will compare equal to itself.
The difference between copies and references only adds to the confusion of operator overloadin...
How to keep a git branch in sync with master
.... That was written by the Git maintainer, so it's probably fair to say he knows what he's talking about with regard to this particular topic.
– Dan Moulding
Mar 12 '14 at 23:44
2
...
How can I truncate a datetime in SQL Server?
...rect way (old):
dateadd(dd, datediff(dd,0, getDate()), 0)
This is older now, but it's still worth knowing because it can also easily adapt for other time points, like the first moment of the month, minute, hour, or year.
This correct way uses documented functions that are part of the ansi standa...
module.exports vs exports in Node.js
... want to export a constructor function then there is something you should know about using module.exports or exports;(Remember again that module.exports will be returned when you require something, not export).
module.exports = function Something() {
console.log('bla bla');
}
Now typeof retur...
What does void mean in C, C++, and C#?
...hing
Generic data pointer: void* data
-- 'data' is a pointer to data of unknown type, and cannot be dereferenced
Note: the void in a function argument is optional in C++, so int myFunc() is exactly the same as int myFunc(void), and it is left out completely in C#. It is always required for a retur...