大约有 15,000 项符合查询结果（耗时：0.0334秒） [XML]
Resumable downloads when using PHP to send the file?
...ing a PHP scripting for tunnelling file downloads, since we don't want to expose the absolute path of downloadable file:
13...
Linux equivalent of the Mac OS X “open” command [closed]
I've found the "open" command in Mac OS X very handy in the command line. From "man open":
7 Answers
...
What is the meaning of prepended double colon “::”?
...swers. It makes sure to use identifier from global namespace. Look at the example again
– hungryWolf
Apr 30 '18 at 19:50
add a comment
|
...
Environment variable substitution in sed
...
Your two examples look identical, which makes problems hard to diagnose. Potential problems:
You may need double quotes, as in sed 's/xxx/'"$PWD"'/'
$PWD may contain a slash, in which case you need to find a character not contained ...
LINQ Select Distinct with Anonymous Types
So I have a collection of objects. The exact type isn't important. From it I want to extract all the unique pairs of a pair of particular properties, thusly:
...
How to remove leading and trailing zeros in a string? Python
...12-n\n"," 12091231000-n00000","alphanum0000", "00alphanum"]
pred = lambda x: x in {"0", "\n", " "}
list("".join(mit.strip(i, pred)) for i in iterables)
# ['231512-n', '12091231000-n', 'alphanum', 'alphanum']
Details
Notice, here we strip both leading and trailing "0"s among other elements that...
How to extract the n-th elements from a list of tuples?
...
n = 1 # N. . .
[x[n] for x in elements]
share
|
improve this answer
|
follow
|
...
How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...g.isin(somewhere)
Or for "NOT IN": ~something.isin(somewhere)
As a worked example:
import pandas as pd
>>> df
country
0 US
1 UK
2 Germany
3 China
>>> countries_to_keep
['UK', 'China']
>>> df.country.isin(countries_to_keep)
0 False
1 True
2 ...
Python nested functions variable scoping [duplicate]
...the statement b = 4 commented out, this code outputs 0 1, just what you'd expect.
But if you uncomment that line, on the line print b, you get the error
UnboundLocalError: local variable 'b' referenced before assignment
It seems mysterious that the presence of b = 4 might somehow make b disappea...
Is it possible to set code behind a resource dictionary in WPF for event handling?
Is it possible to set code behind a resource dictionary in WPF. For example in a usercontrol for a button you declare it in XAML. The event handling code for the button click is done in the code file behind the control. If I was to create a data template with a button how can I write the event handl...