大约有 43,410 项符合查询结果（耗时：0.0397秒） [XML]
How exactly does tail recursion work?
...
answered Mar 20 '13 at 9:11
Alexey FrunzeAlexey Frunze
56.8k99 gold badges6767 silver badges154154 bronze badges
...
Get top n records for each group of grouped results
... select *
from mytable
where `group` = 1
order by age desc
LIMIT 2
)
UNION ALL
(
select *
from mytable
where `group` = 2
order by age desc
LIMIT 2
)
There are a variety of ways to do this, see this article to determine the best route for your situation:
http://www.xaprb.com/b...
Convert integer to binary in C#
... a binary string.
int value = 8;
string binary = Convert.ToString(value, 2);
Which returns 1000.
share
|
improve this answer
|
follow
|
...
Determine the data types of a data frame's columns
...
220
Your best bet to start is to use ?str(). To explore some examples, let's make some data:
s...
Detect Retina Display
...
295
In order to detect the Retina display reliably on all iOS devices, you need to check if the de...
Python integer division yields float
...
292
Take a look at PEP-238: Changing the Division Operator
The // operator will be available t...
逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
...两个字符串，然后比较它们是否相等吗？
可以看到0x8048b22和0x8048b27指令中分别放入了两个字符串，一个在地址0x8049678中，另一个在0x8(%ebp)中。而0x8(%ebp)是函数phase_1的参数，所以依此可以判断0x8(%ebp)的内存地址中的值是我们输入...
Is “double hashing” a password less secure than just hashing it once?
...
270
Hashing a password once is insecure
No, multiple hashes are not less secure; they are an esse...
What is the Difference Between read() and recv() , and Between send() and write()?
...
|
edited Jul 25 '19 at 9:07
smbear
92299 silver badges1515 bronze badges
answered Nov 24 '0...
Is there a way to list pip dependencies/requirements?
...o I am providing an updated answer.
This was tested with pip versions 8.1.2, 9.0.1, 10.0.1, and 18.1.
To get the output without cluttering your current directory on Linux use
pip download [package] -d /tmp --no-binary :all: -v
-d tells pip the directory that download should put files in.
Bette...