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...odes[i]);
//为指定节点的新建属性并赋值
node.SetAttribute("id","11111");
//为指定节点添加子节点
root.AppendChild(node);
//获取指定节点的指定属性值
string id=node.Attributes["id"].Value;
//获取指定节点中的文本
string content=node.InnerText;
...
How does this checkbox recaptcha work and how can I use it?
...And I also found this: http://jaswsinc.com/recaptcha-ads/ Apparently they did an invite-only beta of their "no CAPTCHA reCAPTCHA" So.... You probably won't be able to make it work on your site, yet. I can't find any information on opting into the beta, but if you search for "No CAPTCHA reCAPTCHA bet...
socket.emit() vs. socket.send()
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TL;DR:
socket.send(data, callback) is essentially equivalent to calling socket.emit('message', JSON.stringify(data), callback)
Without looking at the source code, I would assume that the send function is more efficient edit: for sending string messa...
Finding the author of a line of code in Mercurial
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CVS called it annotate. In SVN, the primary for the command is blame, although annotate and praise are available as aliases.
– djc
May 26 '13 at 19:38
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Python 2.7: Print to File
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In Python 3.0+, print is a function, which you'd call with print(...). In earlier version, print is a statement, which you'd make with print ....
To print to a file in Python earlier than 3.0, you'd do:
print >> f, 'what ever %d', i
The >> operator directs p...
How to stop text from taking up more than 1 line?
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There is also a proprietary ie attribute called word-wrap (IIRC)... stupid IE.
– garrow
Feb 23 '09 at 13:55
22
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Why use Dijkstra's Algorithm if Breadth First Search (BFS) can do the same thing faster?
... from your source to every node in the traversed graph.
Meanwhile BFS basically just expands the search by one “step” (link, edge, whatever you want to call it in your application) on every iteration, which happens to have the effect of finding the smallest number of steps it takes to get to an...
Why is this F# code so slow?
...line works like a C++ template, which would specialize to int based on the call site.
– Brian
May 24 '11 at 0:08
13
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Rails: where does the infamous “current_user” come from?
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It is defined by several gems, e.g. Devise
You'll need to store the user_id somewhere, usually in the session after logging in. It also assumes your app has and needs users, authentication, etc.
Typically, it's something like:
class ApplicationController < ActionController::Base
def current...
How to say “should_receive” more times in RSpec
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@JaredBeck pointed out. The solution didn't work for me on any_instance call.
For any instance i ended up using stub instead of should_receive.
Project.any_instance.stub(:some_method).and_return("value")
This will work for any no. of times though.
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