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Argparse: Required argument 'y' if 'x' is present
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124
No, there isn't any option in argparse to make mutually inclusive sets of options.
The simple...
Does const mean thread-safe in C++11?
I hear that const means thread-safe in C++11 . Is that true?
1 Answer
1
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Remove non-numeric characters (except periods and commas) from a string
...c characters and the comma and period/full stop as follows:
$testString = '12.322,11T';
echo preg_replace('/[^0-9,.]+/', '', $testString);
The pattern can also be expressed as /[^\d,.]+/
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im...
Django removing object from ManyToMany relationship
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186
my_mood.interests.remove(my_interest)
Django's Relations Docs
Note: you might have to get a...
Instance attribute attribute_name defined outside __init__
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170
The idea behind this message is for the sake of readability. We expect to find all the attribu...
How do you get current active/default Environment profile programmatically in Spring?
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231
You can autowire the Environment
@Autowired
Environment env;
Environment offers:
String[] g...
Transpose a data frame
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109
You'd better not transpose the data.frame while the name column is in it - all numeric values ...
Correct way to use get_or_create?
... first_name='John',
last_name='Lennon',
defaults={'birthday': date(1940, 10, 9)},
)
# get_or_create() didn't have to create an object.
>>> created
False
Explanation:
Fields to be evaluated for similarity, have to be mentioned outside defaults. Rest of the fields have to be inclu...
Node.JS constant for platform-specific new line?
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answered Dec 28 '12 at 1:22
Will MunnWill Munn
5,08333 gold badges2020 silver badges2828 bronze badges
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How to manually install an artifact in Maven 2?
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147
You need to indicate the groupId, the artifactId and the version for your artifact:
mvn insta...