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What's the difference between a proc and a lambda in Ruby?
... the method. If, however, we convert our proc to a lambda, we get the following:
def my_method
puts "before proc"
my_proc = lambda do
puts "inside proc"
return
end
my_proc.call
puts "after proc"
end
my_method
shoaib@shoaib-ubuntu-vm:~/tmp$ ruby a.rb
before proc
inside proc
after ...
Use latest version of Internet Explorer in the webbrowser control
The default version of the webbrowser control in a C# Windows Forms
application is 7. I have changed to 9 by the article Browser Emulation , but how is it possible to use the latest version of the installed Internet Explorer in a webbrowser control?
...
Check if user is using IE
...
Use below JavaScript method :
function msieversion()
{
var ua = window.navigator.userAgent;
var msie = ua.indexOf("MSIE ");
if (msie > 0) // If Internet Explorer, return version number
{
alert(parseInt(ua.substring(msie + 5, ua.indexOf(".", msie))));
}
else...
How to detect Windows 64-bit platform with .NET?
In a .NET 2.0 C# application I use the following code to detect the operating system platform:
29 Answers
...
How can I determine the direction of a jQuery scroll event?
...
Check current scrollTop vs previous scrollTop
var lastScrollTop = 0;
$(window).scroll(function(event){
var st = $(this).scrollTop();
if (st > lastScrollTop){
// downscroll code
} else {
// upscroll code
}
lastScrollTop = st;
});
...
解决Scrapy警告:You do not have a working installation of the service_i...
...on.org/pypi/service_identity)来安装。
我们可以直接通过命令行下载:
pip install service_identity-17.0.0-py2.py3-none-any.whl
如果上面的方法没能解决问题,很大可能是有些包的版本不一样导致的,这个时候我们可以用下面这行代码...
解决Scrapy警告:You do not have a working installation of the service_i...
...on.org/pypi/service_identity)来安装。
我们可以直接通过命令行下载:
pip install service_identity-17.0.0-py2.py3-none-any.whl
如果上面的方法没能解决问题,很大可能是有些包的版本不一样导致的,这个时候我们可以用下面这行代码...
解决Scrapy警告:You do not have a working installation of the service_i...
...on.org/pypi/service_identity)来安装。
我们可以直接通过命令行下载:
pip install service_identity-17.0.0-py2.py3-none-any.whl
如果上面的方法没能解决问题,很大可能是有些包的版本不一样导致的,这个时候我们可以用下面这行代码...
使用NPAPI编写浏览器插件的源码实例(windows 7/linux) - C/C++ - 清泛网 - ...
...ugins
$firefox wkt.html
$google-chrome wkt.html ###在网页输入一个命令(必须运行后能跳出窗口,例如gnome-terminal,否则看不见效果),然后点"Run"按钮。
chrome扩展的演示方法
扩展在chrome_extension目录下
加载扩展(加载方法看[6]的第4步...
ATL COM开发入门(一)(JS调用ActiveX/COM组件) - C/C++ - 清泛网 - 专注C/C++及内核技术
...如图:
工程编译后会自动注册COM,没有注册的可使用命令regsvr32 xxx.dll注册,如图:
这时注册表(regedit)中会写入相应的数据:
这时,只能使用IE浏览器打开网页测试,因为只有IE支持COM组件调用,其他内核的浏览器想...
