大约有 47,000 项符合查询结果（耗时：0.0695秒） [XML]
Subset of rows containing NA (missing) values in a chosen column of a data frame
We have a data frame from a CSV file. The data frame DF has columns that contain observed values and a column ( VaR2 ) that contains the date at which a measurement has been taken. If the date was not recorded, the CSV file contains the value NA , for missing data.
...
How does a debugger work?
...unctions for Windows.
The debugger is able to use information from symbol files to translate from addresses to variable names and locations in the source code. The symbol file information is a separate set of APIs and isn't a core part of the OS as such. On Windows this is through the Debug Interfa...
S3 Static Website Hosting Route All Paths to Index.html
...eat :) It'd be nice if CloudFront just let us map a range of paths to a S3 file (without a redirect).
– Bob
Dec 15 '16 at 6:36
3
...
c++文件流基本用法(ifstream, ostream,fstream) - C/C++ - 清泛网 - 专注C/C++及内核技术
...。
例一: 写文件
#include <fstream.h>
void main
{
ofstream file;
file.open("file.txt");
file<<"Hello file/n"<<75;
file.close();
}
例二: 读文件
#include <fstream.h>
void main
{
ifstream file;
char output[100];
int x;
file.open("file.txt");
...
php 遍历目录批量转换文件编码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...：
< ?php
//php iconv.php
//exec it on root dir
$path = dirname(__FILE__);
tree($path);
function encodeFiles($fileName)
{
// echo $fileName;
if (file_exists($fileName)) {
// Read in the contents
$res = file_get_contents($fileName);
$i = pathinfo($file...
UnicodeEncodeError: 'latin-1' codec can't encode character
...e only time that I've ever seen characters in the range U+0080-U+009F in a file encoded as ISO-8859-1 or UTF-8 resulted from some clown concatenating a bunch of files some of which were encoded in cp850 and then transcoding the resultant mess from "latin1" to UTF-8. The draft HTML5 spec is consideri...
How to call shell commands from Ruby
... = %x[find . -name '*test.rb' | sort]
Which, in this case, will populate file list with all test files under the current directory, which you can process as expected:
directorylist.each do |filename|
filename.chomp!
# work with file
end
...
cd into directory without having permission
...rx,go-w openfire
That grants you permission to use the directory and the files in it (x) and to list the files that are in it (r); it also denies group and others write permission on the directory, which is usually correct (though sometimes you may want to allow group to create files in your direc...
How to get the nvidia driver version from the command line?
...
Windows version:
cd \Program Files\NVIDIA Corporation\NVSMI
nvidia-smi
share
|
improve this answer
|
follow
|
...
How to pull specific directory with git
... the top of your repo copy
git fetch
git checkout HEAD path/to/your/dir/or/file
Where "path/..." in (3) starts at the directory just below the repo root containing your ".../file"
NOTE that instead of "HEAD", the hash code of a specific commit may be used, and then you will get the revision (file)...