大约有 46,000 项符合查询结果（耗时：0.0503秒） [XML]
Why does auto a=1; compile in C?
...ause local scope is the default for a variable declared inside a function, it's also the same as int a in this example.
This keyword is actually a leftover from C's predecessor B, where there were no base types: everything was int, pointer to int, array of int.(*) Declarations would be either auto ...
must appear in the GROUP BY clause or be used in an aggregate function
... this issue, you must calculate the aggregate in a sub-query and then join it with itself to get the additional columns you'd need to show:
SELECT m.cname, m.wmname, t.mx
FROM (
SELECT cname, MAX(avg) AS mx
FROM makerar
GROUP BY cname
) t JOIN makerar m ON m.cname = t.cname AND t.mx...
How to configure Mac OS X term so that git has color? [closed]
I've seen a Mac OS X git demo online in which it's configured to have multiple colors.
6 Answers
...
Reset Entity-Framework Migrations
I've mucked up my migrations, I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic.
...
A command-line HTML pretty-printer: Making messy HTML readable [closed]
...Tidy Project: http://www.html-tidy.org/
The granddaddy of HTML tools, with support for modern standards.
There used to be a fork called tidy-html5 which since became the official thing. Here is its GitHub repository.
Tidy is a console application for Mac OS X, Linux, Windows, UNIX, and mor...
Understanding NSRunLoop
...or what is NSRunLoop ? so as I know NSRunLoop is a something connected with NSThread right? So assume I create a Thread like
...
What does the “map” method do in Ruby?
... |n| n * n } #=> [1, 4, 9]
Array and Range are enumerable types. map with a block returns an Array. map! mutates the original array.
Where is this helpful, and what is the difference between map! and each? Here is an example:
names = ['danil', 'edmund']
# here we map one array to another, c...
How to disable anchor “jump” when loading a page?
...sh) {
setTimeout(function() {
window.scrollTo(0, 0);
}, 1);
}
Edit: tested and works in Firefox, IE & Chrome on Windows.
Edit 2: move setTimeout() inside if block, props @vsync.
share
|
...
How to run Django's test database only in memory?
My Django unit tests take a long time to run, so I'm looking for ways to speed that up. I'm considering installing an SSD , but I know that has its downsides too. Of course, there are things I could do with my code, but I'm looking for a structural fix. Even running a single test is slow since the ...
Creating an empty list in Python
...
Here is how you can test which piece of code is faster:
% python -mtimeit "l=[]"
10000000 loops, best of 3: 0.0711 usec per loop
% python -mtimeit "l=list()"
1000000 loops, best of 3: 0.297 usec per loop
However, in practice, this initialization is most likely an extremely small part of you...