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cv2.imshow command doesn't work properly in opencv-python
... only works with waitKey():
import cv2
img = cv2.imread('C:/Python27/03323_HD.jpg')
cv2.imshow('ImageWindow', img)
cv2.waitKey()
(The whole message-loop necessary for updating the window is hidden in there.)
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Pandas count(distinct) equivalent
...if I have multiple columns that I want to be unique together, like in .drop_duplicates(subset=['col1','col2'])?
– ErnestScribbler
Oct 2 '17 at 8:10
4
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C# 通过代码安装、卸载、启动、停止服务 - .NET(C#) - 清泛IT论坛，有思想、有深度
...sp; IDictionary _SavedState = new Hashtable();
ServiceController service = new ServiceController(serviceName);
 ...
MySQL Orderby a number, Nulls last
...ASC.
A good reference is here http://troels.arvin.dk/db/rdbms#select-order_by
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How to pass parameters to ThreadStart method in Thread?
...legate to execute the thread function.
public class Download
{
string _filename;
Download(string filename)
{
_filename = filename;
}
public void download(string filename)
{
//download code
}
}
Download = new Download(filename);
Thread thread = new Thread...
Golang tests in sub-directory
.../... expands to net and packages in its subdirectories.
If you keep your _test.go files in a subfolder, the 'go test ./...' command will be able to pick them up.
But:
you will need to prefix your exported variables and functions (used in your tests) with the name of your package, in order for the...
PHP calculate age
...is not safe to rely on the system's timezone settings, even when I add date_default_timezone_set('Europe/Brussels');
– stef
Sep 23 '10 at 9:01
1
...
Should everything really be a bundle in Symfony 2.x?
... in config.yml from
doctrine:
# ...
orm:
# ...
auto_mapping: true
to
doctrine:
# ...
orm:
# ...
mappings:
model:
type: annotation
dir: %kernel.root_dir%/../src/Vendor/Model
prefix: Vendor\Mod...
What is a lambda (function)?
...res have.
Examples in other languages
Perl 5
sub adder {
my ($x) = @_;
return sub {
my ($y) = @_;
$x + $y
}
}
my $add5 = adder(5);
print &$add5(1) == 6 ? "ok\n" : "not ok\n";
JavaScript
var adder = function (x) {
return function (y) {
return x + y;
...
VS2005混合编译ARM汇编代码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...,2,3,4);
wsprintf(szTemp, L"Result = %d", iResult);
MessageBox(HWND_DESKTOP, szTemp, L"ASM Result", MB_OK);
return 0;
} /* WinMain() */
四. Build VS2005的Project，当你看到如下信息时，恭喜你~~~你成功了！
========= Rebuild All: 1 succeeded, 0 failed, 0...