大约有 42,000 项符合查询结果（耗时：0.0640秒） [XML]
How to pip or easy_install tkinter on Windows
My Idle is throwing errors that and says tkinter can't be imported.
12 Answers
12
...
SQL Server dynamic PIVOT query?
... So \@cols must be string-concatenated, right? We can't use sp_executesql and parameter-binding to interpolate \@cols in there? Even though we construct \@cols ourself, what if somehow it contained malicious SQL. Any additional mitigating steps I could take before concatenating it and executing it?...
Static variable inside of a function in C
What will be printed out? 6 6 or 6 7? And why?
13 Answers
13
...
In Javascript, how to conditionally add a member to an object?
... b: conditionB ? 5 : undefined,
c: conditionC ? 5 : undefined,
// and so on...
});
And obtain the results you expect (if conditionB is false, then b will not exist in a).
share
|
improve ...
How would one write object-oriented code in C? [closed]
...esign pattern known as "object orientation"; same with garbage collection, and other such. They are so ingrained now, we tend to forget, when they were first being devised, it was in much the same way as with what we think of as design patterns today
– Dexygen
...
How to use Oracle ORDER BY and ROWNUM correctly?
...before the order by. So, your desired query is saying "take the first row and then order it by t_stamp desc". And that is not what you intend.
The subquery method is the proper method for doing this in Oracle.
If you want a version that works in both servers, you can use:
select ril.*
from (sel...
What does MVW stand for?
...
It stands indeed for whatever, as in whatever works for you
MVC vs MVVM vs MVP. What a controversial topic that many developers
can spend hours and hours debating and arguing about.
For several years +AngularJS was clos...
How can I pad a value with leading zeros?
...o readers!
As commenters have pointed out, this solution is "clever", and as
clever solutions often are, it's memory intensive and relatively
slow. If performance is a concern for you, don't use this solution!
Potentially outdated: ECMAScript 2017 includes String.prototype.padStart and...
Using tags to turn off caching in all browsers? [duplicate]
...er here:
How to control web page caching, across all browsers?
For IE9 and before
Do not blindly copy paste this!
The list is just examples of different techniques, it's not for direct
insertion. If copied, the second would overwrite the first and the
fourth would overwrite the third be...
How to emulate GPS location in the Android Emulator?
I want to get longitude and latitude in Android emulator for testing.
33 Answers
33
...