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Bash array with spaces in elements
...through its indices, like so, it works if I add the elements either numerically or with escapes:
for ((i = 0; i < ${#FILES[@]}; i++))
do
echo "${FILES[$i]}"
done
Any of these declarations of $FILES should work:
FILES=(2011-09-04\ 21.43.02.jpg
2011-09-05\ 10.23.14.jpg
2011-09-09\ 12.31.16....
How to check if there exists a process with a given pid in Python?
... if the pid is not running, and do nothing otherwise.
import os
def check_pid(pid):
""" Check For the existence of a unix pid. """
try:
os.kill(pid, 0)
except OSError:
return False
else:
return True
...
Struct constructor: “fields must be fully assigned before control is returned to the caller.”
...
@RogerWillcocks, just call the default constructor then: public YourStruct(some params) : this() (see vittore's answer)
– Thomas Levesque
Nov 27 '12 at 2:25
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What SOAP client libraries exist for Python, and where is the documentation for them? [closed]
... I'm doing this to get myself acquainted with both technologies. I've installed SOAPlib and I've tried to read their Client documentation, but I don't understand it too well. Is there anything else I can look into which is more suited for being a SOAP Client library for Python?
...
leading zeros in rails
...using a given padding character.
str.rjust(integer, padstr=' ') → new_str
If integer is greater than the length of str, returns a new String of length integer with str right justified and padded with padstr; otherwise, returns str.
some_int = 5
some_int.to_s.rjust(2, '0') # => '05'
...
Check for internet connection availability in Swift
...unc isConnectedToNetwork() -> Bool {
var zeroAddress = sockaddr_in(sin_len: 0, sin_family: 0, sin_port: 0, sin_addr: in_addr(s_addr: 0), sin_zero: (0, 0, 0, 0, 0, 0, 0, 0))
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)...
Finding duplicate values in a SQL table
...ly group on both of the columns.
Note: the older ANSI standard is to have all non-aggregated columns in the GROUP BY but this has changed with the idea of "functional dependency":
In relational database theory, a functional dependency is a constraint between two sets of attributes in a relation...
Why is the minimalist, example Haskell quicksort not a “true” quicksort?
... two beautiful aspects:
Divide and conquer: break the problem into two smaller problems.
Partition the elements in-place.
The short Haskell example demonstrates (1), but not (2). How (2) is done may not be obvious if you don't already know the technique!
...
C# 通过代码安装、卸载、启动、停止服务 - .NET(C#) - 清泛IT论坛，有思想、有深度
...sp; IDictionary _SavedState = new Hashtable();
ServiceController service = new ServiceController(serviceName);
 ...
Pandas: drop a level from a multi-level column index?
...
@yoonghm It is there, you are probably just calling it on columns that don't have a multi-index
– matt harrison
Dec 18 '18 at 14:59
1
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