大约有 37,000 项符合查询结果（耗时：0.0554秒） [XML]
Sorting a Python list by two fields
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mouadmouad
55.9k1515 gold badges107107 silver badges102102 bronze badges
2
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Extracting numbers from vectors of strings
...inding a set of numbers in the start and capturing them
as.numeric(gsub("([0-9]+).*$", "\\1", years))
or
# pattern is to just remove _years_old
as.numeric(gsub(" years old", "", years))
or
# split by space, get the element in first index
as.numeric(sapply(strsplit(years, " "), "[[", 1))
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Python name mangling
...ame, age):
self.name = name
self._age = age if age >= 0 else 0
@property
def age(self):
return self._age
@age.setter
def age(self, age):
if age >= 0:
self._age = age
else:
self._age = 0
What about t...
virtualenv --no-site-packages and pip still finding global packages?
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108
I had a problem like this, until I realized that (long before I had discovered virtualenv), I ...
How to check if there's nothing to be committed in the current branch?
...ies. is there someway exclude these directory?
– 9nix00
Feb 28 '11 at 10:26
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What is the equivalent of “none” in django templates?
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edited Feb 25 '14 at 22:03
Thomas Vander Stichele
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Javascript: How to check if a string is empty? [duplicate]
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150
I check length.
if (str.length == 0) {
}
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What is a semaphore?
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404
Think of semaphores as bouncers at a nightclub. There are a dedicated number of people that are...
Save current directory in variable using Bash?
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edited Jul 18 '13 at 0:24
peakxu
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answered Nov 7 '12 at 17...
RVM is not a function, selecting rubies with 'rvm use …' will not work
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answered May 30 '14 at 20:42
BroiSatseBroiSatse
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