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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
ns:40088 nr:0 dw:0 dr:40248 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
# drbd-overview
0:r0/0 Connected Secondary/Secondary Inconsistent/Inconsistent
3.7.1 查看版本
#cat /proc/drbd
3.7.2 查看...
Python Pandas: Get index of rows which column matches certain value
...rame({'BoolCol': [True, False, False, True, True]},
index=[10,20,30,40,50])
In [53]: df
Out[53]:
BoolCol
10 True
20 False
30 False
40 True
50 True
[5 rows x 1 columns]
In [54]: df.index[df['BoolCol']].tolist()
Out[54]: [10, 40, 50]
If you want to use the index,
In [5...
How do you divide each element in a list by an int?
...
The idiomatic way would be to use list comprehension:
myList = [10,20,30,40,50,60,70,80,90]
myInt = 10
newList = [x / myInt for x in myList]
or, if you need to maintain the reference to the original list:
myList[:] = [x / myInt for x in myList]
...
Replace console output in Python
...ess(title):
global progress_x
sys.stdout.write(title + ": [" + "-"*40 + "]" + chr(8)*41)
sys.stdout.flush()
progress_x = 0
def progress(x):
global progress_x
x = int(x * 40 // 100)
sys.stdout.write("#" * (x - progress_x))
sys.stdout.flush()
progress_x = x
def en...
Change the maximum upload file size
...hp.ini :
; Maximum allowed size for uploaded files.
upload_max_filesize = 40M
; Must be greater than or equal to upload_max_filesize
post_max_size = 40M
After modifying php.ini file(s), you need to restart your HTTP server to use new configuration.
If you can't change your php.ini, you're out o...
How do I connect to a specific Wi-Fi network in Android programmatically?
...yMgmt.NONE);
conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
For WPA network you need to add passphrase like this:
conf.preSharedKey = "\""+ networkPass +"\"";
For Open network you need to do this:
conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
Then, you n...
Bin size in Matplotlib (Histogram)
...ey can be unequally distributed, too:
plt.hist(data, bins=[0, 10, 20, 30, 40, 50, 100])
If you just want them equally distributed, you can simply use range:
plt.hist(data, bins=range(min(data), max(data) + binwidth, binwidth))
Added to original answer
The above line works for data filled wi...
Javascript: Round up to the next multiple of 5
...? x : Math.floor(x/5)*5) : Math.ceil(x/5)*5 }
And the tests:
for (var x=40; x<51; x++) {
console.log(x+"=>", x%5<3 ? (x%5===0 ? x : Math.floor(x/5)*5) : Math.ceil(x/5)*5)
}
// 40 => 40
// 41 => 40
// 42 => 40
// 43 => 45
// 44 => 45
// 45 => 45
// 46 => 45
// 47 =&...
How can I reverse a list in Python?
...ake use of the reversed function for this as:
>>> array=[0,10,20,40]
>>> for i in reversed(array):
... print(i)
Note that reversed(...) does not return a list. You can get a reversed list using list(reversed(array)).
...
Replace all non Alpha Numeric characters, New Lines, and multiple White Space with one Space
...----------
5,000 /[\W_]+/g 19,977.80 1.09 10,820.40 1.32
5,000 /[^a-z0-9]+/gi 19,901.60 1.49 10,902.00 1.20
5,000 /[^a-zA-Z0-9]+/g 19,559.40 1.96 10,916.80 1.13
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