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What is the difference between “ is None ” and “ ==None ”
...
The answer is explained here.
To quote:
A class is free to implement
comparison any way it chooses, and it
can choose to make comparison against
None mean something (which actually
makes sense; if someone told you to
implement the None object f...
How do I escape ampersands in batch files?
...example:
start http://www.google.com/search?client=opera^&rls=en^&q=escape+ampersand%20and%20percentage+in+cmd^&sourceid=opera^&ie=utf-8^&oe=utf-8
From a batch file
& is escaped like this: ^& (based on @Wael Dalloul's answer)
% is escaped like this: %% (based on the ...
Get next / previous element using JavaScript?
...
So basically with selectionDiv iterate through the collection to find its index, and then obviously -1 = previous +1 = next within bounds
for(var i = 0; i < divs.length;i++)
{
if(divs[i] == selectionDiv)
{
var previous = divs[i - 1];
var next = divs[i + 1];
}
}
Please be aw...
When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...eURIComponent doesn't encode -_.!~*'(), causing problem in posting data to php in xml string.
For example:
<xml><text x="100" y="150" value="It's a value with single quote" />
</xml>
General escape with encodeURI
%3Cxml%3E%3Ctext%20x=%22100%22%20y=%22150%22%20value=%22It's%20a%20...
Multiline strings in VB.NET
...rals to achieve a similar effect:
Imports System.XML
Imports System.XML.Linq
Imports System.Core
Dim s As String = <a>Hello
World</a>.Value
Remember that if you have special characters, you should use a CDATA block:
Dim s As String = <![CDATA[Hello
World & Space]]>.Value
20...
Launching Google Maps Directions via an intent on Android
...ntent(android.content.Intent.ACTION_VIEW,
Uri.parse("google.navigation:q=an+address+city"));
UPDATE
In May 2017 Google launched the new API for universal, cross-platform Google Maps URLs:
https://developers.google.com/maps/documentation/urls/guide
You can use Intents with the new API as wel...
What is the correct syntax of ng-include?
...blic/app/templates/includes) and the calling file is (public/app/templates/index.php) the include path needed to be (app/templates/includes/filetoinclude.php). I could not get relative to work.
– Jason Spick
Mar 10 '14 at 13:38
...
Search for selection in vim
...
Answer
Yank the text you want to search for
q/p
Enter
Explanation
q/ works similarly to vanilla search / except you're in command mode so p actually does "paste" instead of typing the character p. So the above will copy the text you're searching for and paste it int...
Is there a print_r or var_dump equivalent in Ruby / Ruby on Rails?
...onView::Helpers::DebugHelper
#app/view/controllers/post_controller.rb
def index
@posts = Post.all
end
#app/view/posts/index.html.erb
<%= debug(@posts) %>
#start your server
rails -s
results (in browser)
- !ruby/object:Post
raw_attributes:
id: 2
title: My Second Post
body: ...
How to show Page Loading div until the page has finished loading?
...on: fixed;
display: block;
opacity: 0.7;
background-color: #fff;
z-index: 99;
text-align: center;
}
#loading-image {
position: absolute;
top: 100px;
left: 240px;
z-index: 100;
}
Then, add this javascript to your page (preferably at the end of your page, before your closing </...