大约有 35,487 项符合查询结果（耗时：0.0427秒） [XML]
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...
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?
...
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?
...|
edited Feb 25 '14 at 22:03
Thomas Vander Stichele
33.1k1212 gold badges5050 silver badges5858 bronze badges
...
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))
...
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...
Android requires compiler compliance level 5.0 or 6.0. Found '1.7' instead. Please use Android Tools
...clipse IDE).
As helios said, you must set project compatibility to Java 5.0 or Java 6.0.
To do that, 2 options:
Right-click on your project and select "Android Tools -> Fix
Project Properties" (if this din't work, try second option)
Right-click on your project and select "Properties -> Ja...
Rails: What's a good way to validate links (URLs)?
...
Simone CarlettiSimone Carletti
160k3939 gold badges336336 silver badges353353 bronze badges
...