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Read lines from a file into a Bash array [duplicate]
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Latest revision based on comment from BinaryZebra's comment
and tested here. The addition of command eval allows for the expression to be kept in the present execution environment while the expressions before are only held for...
TypeError: got multiple values for argument
...o c, causing the "multiple arguments" error. I make this mistake because I tested this internal method outside the class and forget to add the self back in. Hope helpful for someone else!
– yuqli
Feb 4 '19 at 3:15
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LEFT JOIN only first row
...en the MIN(artist_id) will be the earliest.
So try something like this (untested...)
SELECT *
FROM feeds f
LEFT JOIN artists a ON a.artist_id = (
SELECT
MIN(fa.artist_id) a_id
FROM feeds_artists fa
WHERE fa.feed_id = f.feed_id
) a
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With Mercurial, how can I “compress” a series of changesets into one before pushing?
...feature. I work on it, and when I think it's done, I commit the changeset. Testing it a bit more, I find that I could further improve this feature by tweaking something in the code. I make the change and commit. 20 minutes later, I find there's a bug in this new feature, so I fix it and commit that ...
Jinja2 template variable if None Object set a default value
...Note the last variable (p.User['first_name']) does not have the if defined test after it.
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Can you use a trailing comma in a JSON object?
...I just tried them in IE 11 with no problem. Which versions of IE have you tested in, where you found them to cause problems?
– iconoclast
Nov 5 '14 at 19:09
10
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How different is Scrum practice from Agile Practice? [duplicate]
...SCRUM, hence in Agile.
User Story as Client requirement
Pair Programming
Test Driven Development (TDD)
Team based estimation
Refactoring
Simple Design
Evolutionary Design
Retrospective
Daily Stand up meeting
Continuous Integration of code
Client Demo etc.
For more details, you may wish to go thr...
How to terminate script execution when debugging in Google Chrome?
...n you hit ctrl-R, the next throw will be hit, and the page will refresh.
(tested with Chrome v38, circa Apr 2017)
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Pandas aggregate count distinct
... already given, the solution using the string "nunique" seems much faster, tested here on ~21M rows dataframe, then grouped to ~2M
%time _=g.agg({"id": lambda x: x.nunique()})
CPU times: user 3min 3s, sys: 2.94 s, total: 3min 6s
Wall time: 3min 20s
%time _=g.agg({"id": pd.Series.nunique})
CPU tim...
PHP abstract properties
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As you could have found out by just testing your code:
Fatal error: Properties cannot be declared abstract in ... on line 3
No, there is not. Properties cannot be declared abstract in PHP.
However you can implement a getter/setter function abstract, this...