大约有 23,000 项符合查询结果（耗时：0.0413秒） [XML]
Using DISTINCT and COUNT together in a MySQL Query
... against answers that don't offer optimal performance when it comes to databases. It's critical to keep perfomance standards. I'd go with @alistair-hart 's answer.
– JDuarteDJ
Jan 20 '15 at 15:45
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What is a covariant return type?
...can change the return type as long as it can be assigned to return type of Base version of the method.
So this feature of returning derived types is called COVARIANT...
Can overridden methods differ in return type?
share
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How can one see the structure of a table in SQLite? [duplicate]
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Invoke the sqlite3 utility on the database file, and use its special dot commands:
.tables will list tables
.schema [tablename] will show the CREATE statement(s) for a table or tables
There are many other useful builtin dot commands -- see the documentation a...
Best lightweight web server (only static content) for Windows [closed]
...t annoyed that mongoose became so commercialized so I made a simple Golang based static server and released on GitHub: github.com/ethanpil/sheret
– ethanpil
May 26 '17 at 19:58
3
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How do I skip an iteration of a `foreach` loop?
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The one LINQ based answer is nice and has an elegance to it, but using an if statement is not wrong.
– crashmstr
Oct 7 '11 at 14:45
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How can I reload .emacs after changing it?
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is M-: > Ctrl Alt x? based on your logic I imagine M-: < C-M-x when only one line in the init file is changed? Maybe it's just ==
– Robert Houghton
Feb 10 at 6:16
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Apache2: 'AH01630: client denied by server configuration'
...httpd.apache.org/docs/2.4/upgrading.html#access
In 2.2, access control based on client hostname, IP address, and other
characteristics of client requests was done using the directives
Order, Allow, Deny, and Satisfy.
In 2.4, such access control is done in the same way as other
authori...
How to sort a list of strings?
...racters is a big separate topic. PyICU could be used instead of the locale-based solution.
– jfs
Jun 4 '16 at 0:48
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AngularJS disable partial caching on dev machine
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This defeats Angular's caching of route-based templates, but not ng-include'd partials.
– bradw2k
Apr 27 '15 at 20:19
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All combinations of a list of lists
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One can use base python for this. The code needs a function to flatten lists of lists:
def flatten(B): # function needed for code below;
A = []
for i in B:
if type(i) == list: A.extend(i)
else: A.append(i)
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