大约有 260 项符合查询结果（耗时：0.0134秒） [XML]
Force R not to use exponential notation (e.g. e+10)?
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format(1e6, scientific=FALSE) returns "1000000" while as.character(1e6) returns "1e+06", so there is a difference between the two methods.
– mickey
Dec 4 '18 at 18:24
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Is there a simple way to delete a list element by value?
...y, numpy data in Cython. [@Gill's answer is O(n*n) unnecessarily (compare 1e6 and 1e12 – you don't want to risk the latter). while 1: L.remove(value) and return on ValueError might work well with a few values or small lists in CPython.
– jfs
Aug 23 '14 at 2:...
Implement touch using Python?
... community wiki
6 revs, 2 users 96%ephemient
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Compelling examples of custom C++ allocators?
... community wiki
4 revs, 3 users 96%Johannes Thoma
17
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What is the difference between $(command) and `command` in shell programming?
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July 2014: The commit f25f5e6 (by Elia Pinto (devzero2000), April 2014, Git 2.0) adds to the nesting issue:
The backquoted form is the traditional method for command substitution, and is supported by POSIX.
However, all but the simplest uses beco...
What programming practice that you once liked have you since changed your mind about? [closed]
... community wiki
3 revs, 2 users 96%Luke Baulch
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How to concatenate properties from multiple JavaScript objects
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This is one of the best I could say. Since E6 is now mostly used, Object.assign is the best answer.
– Vimalraj Selvam
Nov 22 '16 at 10:53
6
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Remove NA values from a vector
...it),
purrr::map(airquality, ~purrr::discard(.x, .p = is.na)),
times = 1e6)
Unit: microseconds
expr min lq mean median uq max neval cld
purrr::map(airquality, function(x) { x[!is.na(x)] }) 66.8 75.9 130.5643 ...
Heavy usage of Python at Google [closed]
... community wiki
4 revs, 2 users 96%Felix Kling
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Ubuntu, vim, and the solarized color palette
...D3D336368282:#2A2AA1A19898:#EEEEE8E8D5D5:#00002B2B3636:#CBCB4B4B1616:#58586E6E7575:#65657B7B8383:#838394949696:#6C6C7171C4C4:#9393A1A1A1A1:#FDFDF6F6E3E3"
gconftool-2 --set "/apps/gnome-terminal/profiles/Default/background_color" --type string "#00002B2B3636"
gconftool-2 --set "/apps/gnome-terminal/p...