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How do you list the active minor modes in emacs?
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C-h m or M-x describe-mode shows all the active minor modes (and major mode) and a brief description of each.
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Read only the first line of a file?
...ile again when the block ends.
The with statement only works in Python 2.5 and up, and in Python 2.5 you need to use from __future__ import with_statement
In Python 3 you should specify the file encoding for the file you open. Read more...
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How do I compare strings in Java?
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However, I ran into a bug, changed one of them into .equals() instead, and it fixed the bug.
23 Answers
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How to convert image to byte array
Can anybody suggest how I can convert an image to a byte array and vice versa?
12 Answers
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python date of the previous month
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datetime and the datetime.timedelta classes are your friend.
find today.
use that to find the first day of this month.
use timedelta to backup a single day, to the last day of the previous month.
print the YYYYMM string you're looki...
How to write file if parent folder doesn't exist?
...you could go with async/await like this gist: gist.github.com/lucasreppewelander/…
– Lucas Reppe Welander
Mar 8 '18 at 21:48
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Python json.loads shows ValueError: Extra data
I am getting some data from a JSON file "new.json", and I want to filter some data and store it into a new JSON file. Here is my code:
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Why do std::shared_ptr work
...g delete). When the shared_ptr is destroyed, it calls that stored function and that will call the deleter.
A simple sketch of the type erasure that is going on simplified with std::function, and avoiding all reference counting and other issues can be seen here:
template <typename T>
void del...
How to save all the variables in the current python session?
...s()[key]
except TypeError:
#
# __builtins__, my_shelf, and imported modules can not be shelved.
#
print('ERROR shelving: {0}'.format(key))
my_shelf.close()
To restore:
my_shelf = shelve.open(filename)
for key in my_shelf:
globals()[key]=my_shelf[key]
my_she...
What is the string concatenation operator in Oracle?
...swered Nov 10 '08 at 15:45
Tony AndrewsTony Andrews
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