大约有 47,000 项符合查询结果（耗时：0.0578秒） [XML]
Best implementation for hashCode method for a collection
...on to equals. A library implementation does not claim to absolve you from knowing what the characteristics of a correct hashCode implementation are - these libraries make it easier for you to implement such a conforming implementation for the majority of cases where equals is overriden.
...
The multi-part identifier could not be bound
...use. In this case, any reference to a in the ON clause is invalid, a is unknown at that point. That is why you are getting the error message.
If I were you, I would probably try to rewrite this query, and one possible solution might be:
SELECT DISTINCT
a.maxa,
b.mahuyen,
a.tenxa,
b.tenhuye...
How to handle command-line arguments in PowerShell
...t like this:
if ($force) {
//deletes a file or does something "bad"
}
Now, when calling the script you'd set the switch/flag parameter like this:
.\yourscript.ps1 -server "http://otherserver" -force
If you explicitly want to state that the flag is not set, there is a special syntax for that
...
Is it a bad practice to catch Throwable?
...
How do you know what was allocated and what wasn't prior to the OOME? All bets are off once you get that, even inside a J2EE container like Tomcat or JBoss.
– bmauter
May 31 '13 at 2:05
...
Create a date from day month and year with T-SQL
...@DayOfMonth - 1))
Edited October 2014. As Noted by @cade Roux, SQL 2012 now has a built-in function:
DATEFROMPARTS(year, month, day)
that does the same thing.
Edited 3 Oct 2016, (Thanks to @bambams for noticing this, and @brinary for fixing it), The last solution, proposed by @brinary. does not ...
git command to show all (lightweight) tags creation dates
...tty="format:%ai %d"
I've put that command in an alias in my ~/.alias, so now everytime I run gitshowtagbydate I get what I needed.
share
|
improve this answer
|
follow
...
Do using statements and await keywords play nicely in c#
...nam: No, using and await serve entirely different purposes. Note that C# 8 now has asynchronous disposal as well. While it's worth being aware of the threading issue my answer highlights, that definitely doesn't mean it's wrong to mix using and await.
– Jon Skeet
...
0.1 float is greater than 0.1 double. I expected it to be false [duplicate]
...ng 1/9 in 3-digit decimal and 6-digit decimal. 0.111 < 0.111111, right?
Now suppose you are computing 6/9. 0.667 > 0.666667, right?
You can't have it that 6/9 in three digit decimal is 0.666 because that is not the closest 3-digit decimal to 6/9!
...
Renaming a branch in GitHub
...
"master" is just as example, will change now.
– Vi.
Mar 1 '12 at 22:53
Maybe the ord...
Which is the first integer that an IEEE 754 float is incapable of representing exactly?
...
The next integer is indeed 16777218, because 2 now becomes the last significant binary digit.
– kennytm
Oct 16 '14 at 7:53
6
...