大约有 37,000 项符合查询结果（耗时：0.0724秒） [XML]
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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How many bytes does one Unicode character take?
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edited Oct 12 '16 at 18:07
Kasravnd
90.1k1212 gold badges129129 silver badges161161 bronze badges
answ...
Big O, how do you calculate/approximate it?
...you have this piece of code:
int sum(int* data, int N) {
int result = 0; // 1
for (int i = 0; i < N; i++) { // 2
result += data[i]; // 3
}
return result; // 4
}
This function returns the sum of all the elements of the array, and we ...
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 ...
What is the equivalent of “none” in django templates?
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edited Feb 25 '14 at 22:03
Thomas Vander Stichele
33.1k1212 gold badges5050 silver badges5858 bronze badges
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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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Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7)
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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...
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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