大约有 41,220 项符合查询结果（耗时：0.0479秒） [XML]
Python integer division yields float
...
Take a look at PEP-238: Changing the Division Operator
The // operator will be available to request floor division unambiguously.
share
|
...
How to tell Maven to disregard SSL errors (and trusting all certs)?
...
239
You can disable SSL certificate checking by adding one or more of these command line parameters...
Reshaping data.frame from wide to long format
...:
reshape(d,
direction = "long",
varying = list(names(d)[3:7]),
v.names = "Value",
idvar = c("Code", "Country"),
timevar = "Year",
times = 1950:1954)
share
|
...
urllib2.HTTPError: HTTP Error 403: Forbidden
...
3 Answers
3
Active
...
Android - Activity vs FragmentActivity? [duplicate]
...
3 Answers
3
Active
...
How to use arguments from previous command?
...w see:
$ echo a
without pressing Enter yet, do the following
Press Alt-3 Alt-Ctrl-y
Press Alt-- 2 Alt-Ctrl-y
Now you will see:
$ echo ace
By the way, you could have put the echo on the line by selecting argument 0:
Press Alt-0 Alt-Ctrl-y
Edit:
To answer the question you added to your or...
Why aren't python nested functions called closures?
...
403
A closure occurs when a function has access to a local variable from an enclosing scope that has...
Understanding recursion [closed]
...
603
How do you empty a vase containing five flowers?
Answer: if the vase is not empty, you take out...
ROW_NUMBER() in MySQL
...
I want the row with the single highest col3 for each (col1, col2) pair.
That's a groupwise maximum, one of the most commonly-asked SQL questions (since it seems like it should be easy, but actually it kind of isn't).
I often plump for a null-self-join:
SELECT t0....