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fatal error: Python.h: No such file or directory
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28 Answers
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How should one use std::optional?
... for the job.
– Timothy Shields
Jun 27 '13 at 1:55
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@TimothyShields std::optional<T> is a ...
Summarizing multiple columns with dplyr? [duplicate]
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The dplyr package contains summarise_all for this aim:
library(dplyr)
df %>% group_by(grp) ...
How do I translate an ISO 8601 datetime string into a Python datetime object? [duplicate]
I'm getting a datetime string in a format like "2009-05-28T16:15:00" (this is ISO 8601, I believe). One hackish option seems to be to parse the string using time.strptime and passing the first six elements of the tuple into the datetime constructor, like:
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Curious null-coalescing operator custom implicit conversion behaviour
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Thanks to everyone who contributed to analyzing this issue. It is clearly a compiler bug. It ap...
The forked VM terminated without saying properly goodbye. VM crash or System.exit called
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How do you run your own code alongside Tkinter's event loop?
...inter import *
root = Tk()
def task():
print("hello")
root.after(2000, task) # reschedule event in 2 seconds
root.after(2000, task)
root.mainloop()
Here's the declaration and documentation for the after method:
def after(self, ms, func=None, *args):
"""Call function once after giv...
What is the difference between UNION and UNION ALL?
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Find nearest latitude/longitude with an SQL query
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SELECT latitude, longitude, SQRT(
POW(69.1 * (latitude - [startlat]), 2) +
POW(69.1 * ...
Quickly create large file on a Windows system
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