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Fastest way to replace NAs in a large data.table
...n the reader has to know that seq_along would be along the columns and not down the rows. seq_len(col(DT)) a tiny bit more explicit for that reason.
– Matt Dowle
Jan 11 '17 at 22:47
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How to stop/terminate a python script from running?
...g the signal module. In theory, any signal handler for SIGTERM should shut down the process gracefully. But sometimes if the process is stuck (for example, blocked in an uninterruptable IO sleep state), a SIGTERM signal has no effect because the process can't even wake up to handle it.
To forcibly ...
Repeat string to certain length
...ternatively, as suggested in pillmod's answer that probably nobody scrolls down far enough to notice anymore, you can use divmod to compute the number of full repetitions needed, and the number of extra characters, all at once:
def pillmod_repeat_to_length(s, wanted):
a, b = divmod(wanted, len(...
Can we define implicit conversions of enums in c#?
... handle most fo the grunt work, which eases the above declaration of enums down to:
public sealed class AccountStatus : RichEnum<byte, AccountStatus>
{
public static readonly AccountStatus Open = new AccountStatus(1);
public static readonly AccountStatus Closed = new AccountStatus(2);...
How to increment datetime by custom months in python without using library [duplicate]
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Edit - based on your comment of dates being needed to be rounded down if there are fewer days in the next month, here is a solution:
import datetime
import calendar
def add_months(sourcedate, months):
month = sourcedate.month - 1 + months
year = sourcedate.year + month // 12
...
How can I know if a process is running?
...e block statement. This also goes for foreach and for statements. It boils down to coding style.
– Hallmanac
Nov 24 '15 at 1:36
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Python - doctest vs. unittest [closed]
...ps fight off the temptation to do the interesting code bits before nailing down your tests.
– Brian
Dec 12 '08 at 16:56
6
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Functional, Declarative, and Imperative Programming [closed]
...ter or inner functions respectively are evaluated first. Imagine an upside-down tree, then eager evaluates from function tree branch tips up the branch hierarchy to the top-level function trunk; whereas, lazy evaluates from the trunk down to the branch tips. Eager doesn't have conjunctive products (...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...vm settings to a plain CentOS 5.3 installation. Add a swap file. Ratchet down swappiness and see if you live any longer.
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Which version of Perl should I use on Windows? [closed]
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I'm curious what rated a down-vote.
– gWaldo
Aug 25 '10 at 12:15
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