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How do I compare version numbers in Python?
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django models selecting single field
...name', flat=True)
That creates a flat list of all eng_names. If you want more than one field per row, you can't do a flat list: this will create a list of tuples:
Employees.objects.values_list('eng_name', 'rank')
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Replace all non-alphanumeric characters in a string
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If doing more than one replace, this will perform slightly quicker if you pre-compile the regex, e.g., import re; regex = re.compile('[^0-9a-zA-Z]+'); regex.sub('*', 'h^&ell.,|o w]{+orld')
– Chris
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Difference between two DateTimes C#?
...s to do what you need, i.e.
duration.TotalSeconds
duration.TotalMinutes
More info can be found here.
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Rails: What's a good way to validate links (URLs)?
...st
rescue URI::InvalidURIError
false
end
You can even decide to make it more restrictive. For instance, if you want the URL to be an HTTP/HTTPS URL, then you can make the validation more accurate.
require 'uri'
def valid_url?(url)
uri = URI.parse(url)
uri.is_a?(URI::HTTP) && !uri.hos...
What does multicore assembly language look like?
.../oz-x86-32-asm-003) but there is no standard library support. Quite a bit more than you asked for but it can maybe answer some of those lingering questions.
– duanev
Dec 15 '18 at 1:55
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What is code coverage and how do YOU measure it?
...ode-coverage doesn't mean your code is perfect. Use it as a guide to write more comprehensive (unit-)tests.
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Objective-C: Where to remove observer for NSNotification?
...notification. For this... See above.
Edit (since the answer seems to draw more comments than I would have thought) All I am trying to say here is: it's really hard to give general advice as to when it's best to remove the observer from the notification center, because that depends:
On your use ca...