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Lambda function in list comprehensions
...lution - I introduced y so that we can all see which witch is which).
Edit 2019-08-30:
Following a suggestion by @josoler, which is also present in an answer by @sheridp - the value of the list comprehension "loop variable" can be "embedded" inside an object - the key is for it to be accessed at the...
javascript scroll event for iPhone/iPad?
...xperience is that this still remains a problem with current iOS devices in 2019.
– Chris
Apr 2 '19 at 17:16
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Combining Multiple Commits Into One Prior To Push
...name__ == "__main__":
main(sys.argv)
Ref: https://liwugang.github.io/2019/12/30/git_commits_en.html
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Download a file by jQuery.Ajax
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2019 modern browsers update
This is the approach I'd now recommend with a few caveats:
A relatively modern browser is required
If the file is expected to be very large you should likely do something similar to the original...
SQLite Concurrent Access
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In 2019, there are two new concurrent write options not released yet but available in separate branches.
"PRAGMA journal_mode = wal2"
The advantage of this journal mode over regular "wal" mode is that writers may continue writi...
How to set standard encoding in Visual Studio
...n I check it, I can open files encoding with Windows-1252 on visual studio 2019. But I only find this configuration because this answer. Thanks!
– Gean Ribeiro
Jul 21 at 21:31
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C++ static virtual members?
...etObjectClassName(&yourObject));
return 0;
}
Addendum (Jan 12th 2019):
Instead of using the GetClassNameStatic() function, you can also define the the class name as a static member, even "inline", which IIRC works since C++11 (don't get scared by all the modifiers :)):
class MyObject : ...
Comparing date part only without comparing time in JavaScript
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alert("date is future");
}
</script>
See it running...
Update 2019... free stuff...
Given the popularity of this answer, I've put it all in code. The following function returns a wrapped date object, and only exposes those functions that are safe to use with just-a-date™.
Call it with...
Stop Visual Studio from mixing line endings in files
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In Visual Studio 2015 (this still holds in 2019 for the same value), check the setting:
Tools > Options > Environment > Documents > Check for consistent line endings on load
VS2015 will now prompt you to convert line endings when you open a file where th...
how do you filter pandas dataframes by multiple columns
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length = 100_000
df = pd.DataFrame()
df['Year'] = np.random.randint(1950, 2019, size=length)
df['Gender'] = np.random.choice(['Male', 'Female'], length)
%timeit df.query('Gender=="Male" & Year=="2014" ')
%timeit df[(df['Gender']=='Male') & (df['Year']==2014)]
Results for 100,000 rows:
6...