大约有 36,000 项符合查询结果（耗时：0.0421秒） [XML]
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))
...
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?
...
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
...
What is the equivalent of “none” in django templates?
...|
edited Feb 25 '14 at 22:03
Thomas Vander Stichele
33.1k1212 gold badges5050 silver badges5858 bronze badges
...
What is a semaphore?
...
404
Think of semaphores as bouncers at a nightclub. There are a dedicated number of people that are...
Javascript: How to check if a string is empty? [duplicate]
...
150
I check length.
if (str.length == 0) {
}
...
Save current directory in variable using Bash?
... |
edited Jul 18 '13 at 0:24
peakxu
6,1412424 silver badges2727 bronze badges
answered Nov 7 '12 at 17...
Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7)
...
My httpd-vhosts.conf looks like this now:
<VirtualHost dropbox.local:80>
DocumentRoot "E:/Documenten/Dropbox/Dropbox/dummy-htdocs"
ServerName dropbox.local
ErrorLog "logs/dropbox.local-error.log"
CustomLog "logs/dropbox.local-access.log" combined
<Directory "E:/Documen...
How many bytes does one Unicode character take?
...|
edited Oct 12 '16 at 18:07
Kasravnd
90.1k1212 gold badges129129 silver badges161161 bronze badges
answ...