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Convert integer to binary in C#
... a binary string.
int value = 8;
string binary = Convert.ToString(value, 2);
Which returns 1000.
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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...
Detect Retina Display
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295
In order to detect the Retina display reliably on all iOS devices, you need to check if the de...
Determine the data types of a data frame's columns
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220
Your best bet to start is to use ?str(). To explore some examples, let's make some data:
s...
Python integer division yields float
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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...
What is the Difference Between read() and recv() , and Between send() and write()?
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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...
Passing parameters to a Bash function
...and...
}
To call a function with arguments:
function_name "$arg1" "$arg2"
The function refers to passed arguments by their position (not by name), that is $1, $2, and so forth. $0 is the name of the script itself.
Example:
function_name () {
echo "Parameter #1 is $1"
}
Also, you need to...
Is “double hashing” a password less secure than just hashing it once?
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270
Hashing a password once is insecure
No, multiple hashes are not less secure; they are an esse...