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How do I expand a tuple into variadic template function's arguments?
... perfect-forwarding, constexpr-ness, and noexcept-ness) is presented here: https://blog.tartanllama.xyz/passing-overload-sets/.
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How to calculate moving average using NumPy?
...a[rolling_idx].mean(axis=0)[n-1:]
def rollavg_roll_edges(a,n):
# see https://stackoverflow.com/questions/42101082/fast-numpy-roll
'Numpy array rolling, edge handling'
assert n%2==1
a = np.pad(a,(0,n-1-n//2), 'constant')*np.ones(n)[:,None]
m = a.shape[1]
idx = np.mod((m-1)*n...
How would you make a comma-separated string from a list of strings?
...t case I would suggest looking at the csv module in the standard library:
https://docs.python.org/library/csv.html
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Extracting specific columns in numpy array
...which gives you the desired outcome.
The documentation you can find here: https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.to_numpy.html#pandas.DataFrame.to_numpy
Back to previous page with header( “Location: ” ); in PHP
..._SERVER['HTTP_REFERER']);
Note that this may not work with secure pages (HTTPS) and it's a pretty bad idea overall as the header can be hijacked, sending the user to some other destination. The header may not even be sent by the browser.
Ideally, you will want to either:
Append the return addre...
PostgreSQL query to list all table names?
...
How about giving just \dt in psql? See https://www.postgresql.org/docs/current/static/app-psql.html.
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How do I remove/delete a virtualenv?
...
from virtualenv's official document https://virtualenv.pypa.io/en/stable/userguide/
Removing an Environment
Removing a virtual environment is simply done by deactivating it and deleting the environment folder with all its contents:
(ENV)$ deactivate
$...
Can't ignore UserInterfaceState.xcuserstate
...
Had a friend show me this amazing site https://www.gitignore.io/. Enter the IDE of your choice or other options and it will automatically generate a gitignore file consisting of useful ignores, one of which is the xcuserstate. You can preview the gitignore file be...
How do I get the day of week given a date?
...time
>>> datetime.today().strftime('%A')
'Wednesday'
Read more:
https://docs.python.org/2/library/datetime.html#strftime-strptime-behavior
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Display / print all rows of a tibble (tbl_df)
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i prefer to physically print my tables instead:
CONNECT_SERVER="https://196.168.1.1/"
CONNECT_API_KEY<-"hpphotosmartP9000:8273827"
data.frame = data.frame(1:1000, 1000:2)
connectServer <- Sys.getenv("CONNECT_SERVER")
apiKey <- Sys.getenv("CONNECT_API_KEY")
install.packages('pr...