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What do column flags mean in MySQL Workbench?
...tes in the values.)
UN - Unsigned (non-negative numbers only. so if the range is -500 to 500, instead its 0 - 1000, the range is the same but it starts at 0)
UQ - Create/remove Unique Key
ZF - Zero-Filled (if the length is 5 like INT(5) then every field is filled with 0’s to the 5th digit. ...
Converting list to *args when calling function [duplicate]
...
print args
>>> printer(2,3,4)
(2, 3, 4)
>>> printer(*range(2, 5))
(2, 3, 4)
>>> printer(range(2, 5))
([2, 3, 4],)
>>>
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Is there a math nCr function in python? [duplicate]
...port reduce
def ncr(n, r):
r = min(r, n-r)
numer = reduce(op.mul, range(n, n-r, -1), 1)
denom = reduce(op.mul, range(1, r+1), 1)
return numer // denom # or / in Python 2
As of Python 3.8, binomial coefficients are available in the standard library as math.comb:
>>> fr...
Calling filter returns [duplicate]
...urned by the filter function.
If you want a list, just do
list(filter(f, range(2, 25)))
Nonetheless, you can just iterate over this object with a for loop.
for e in filter(f, range(2, 25)):
do_stuff(e)
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How to get a list of all valid IP addresses in a local network? [closed]
...r more commonly
nmap -sn 192.168.1.0/24
will scan the entire .1 to .254 range
This does a simple ping scan in the entire subnet to see which hosts are online.
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std::find，std::find_if使用小结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...rst
An input iterator addressing the position of the first element in the range
to be searched.
_Last
An input iterator addressing the position one past the final element in the
range to be searched.
_Pred
User-defined predicate function object that defines the condition to be
satisfied by t...
ORACLE 启动提示 内存不足 OUTOF MEMORY - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...ernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=262144
net.core.rmem_max=262144
net.core.wmem_default=262144
net.core.wmem_max=262144
在ORACEL 用户下
输入 su - root
敲入密码
输入 gedit /etc/sysctl.conf...
VBA 获取某列最后一行非空行号 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...total_row As Integer & 39;非空行号tab_total = Worksheets("总表") Range("a65536") End(xlUp) Row（完）VBA 获取某列最后一行非空行号代码：
Dim tab_total_row As Integer
'非空行号
tab_total = Worksheets("总表").Range("a65536").End(xlUp).Row
（完）VBA
VBA读写UTF8文本文件，VBA生成UTF-8无BOM格式的文件 - 更多技术 - 清泛网 -...
...cr + "mydata = {" + vbCrLf
scr = scr & " cljsl:" & Round(sht.Range("N11").Value * 100, 2) & "," + vbCrLf
scr = scr & " myl:" & Round(sht.Range("W11").Value * 100, 2) & "," + vbCrLf
'小组
For i = 1 To 8
arr_acsp_xz(i) = "'" & sht.Cells(i + 2, 1) & "'"
...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...every other column, then you can do it with basic slicing:
In [49]: x=np.arange(16).reshape((4,4))
In [50]: x[1:4:2,1:4:2]
Out[50]:
array([[ 5, 7],
[13, 15]])
This returns a view, not a copy of your array.
In [51]: y=x[1:4:2,1:4:2]
In [52]: y[0,0]=100
In [53]: x # <---- Notice x[...