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Returning the product of a list
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Without using lambda:
from operator import mul
reduce(mul, list, 1)
it is better and faster. With python 2.7.5
from operator import mul
import numpy as np
import numexpr as ne
# from functools import reduce # python3 compatibility
a = range(1,...
A cron job for rails: best practices?
...sts..."
EdiListener.process_new_messages
puts "done."
end
To execute from the command line, this is just "rake cron". This command can then be put on the operating system cron/task scheduler as desired.
Update this is quite an old question and answer! Some new info:
the heroku cron service ...
How to exit from PostgreSQL command line utility: psql
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cntrl+D to exit from any where
– vidur punj
Jan 22 '18 at 14:41
1
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Getting value of HTML Checkbox from onclick/onchange events
From within onClickHandler and/or onChangeHandler , how can I determine what is the new state of the checkbox?
3 Answers...
How do I use the nohup command without getting nohup.out?
... it avoids another problem: if a background process tries to read anything from standard input, it will pause, waiting for you to bring it back to the foreground and type something. So the extra-safe version looks like this:
nohup command </dev/null >/dev/null 2>&1 & # completely d...
Download single files from GitHub
...b.com/downloads/user/repository/filename
Note that the URLs given above, from the links on github.com, will redirect to raw.githubusercontent.com. You should not directly use the URL given by this HTTP 302 redirect because, per RFC 2616: "Since the redirection might be altered on occasion, the cli...
STAThread and multithreading
From the MSDN article on STAThread:
3 Answers
3
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insert vs emplace vs operator[] in c++ map
...You can directly construct it with the appropriate type or pass any object from which the value_type can be constructed, which is where std::make_pair comes into play, as it allows for simple creation of std::pair objects, although it is probably not what you want...
The net effect of the following...
How to clone an InputStream?
...d the input data is small enough to fit into memory, you can copy the data from your InputStream to a ByteArrayOutputStream.
Then you can obtain the associated array of bytes and open as many "cloned" ByteArrayInputStreams as you like.
ByteArrayOutputStream baos = new ByteArrayOutputStream();
// ...
How to construct a std::string from a std::vector?
...string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars?
7 Answers
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