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How does cookie based authentication work?
Can someone give me a step by step description of how cookie based authentication works? I've never done anything involving either authentication or cookies. What does the browser need to do? What does the server need to do? In what order? How do we keep things secure?
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How to convert byte array to string and vice versa?
...really must use a String to hold binary data then the safest way is to use Base64 encoding.
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Get image data url in JavaScript?
...s (just regular <img /> HTML tags). I'd like to get their content, base64 encoded preferably, without the need to redownload the image (ie. it's already loaded by the browser, so now I want the content).
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How to concatenate strings in django templates?
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Use with:
{% with "shop/"|add:shop_name|add:"/base.html" as template %}
{% include template %}
{% endwith %}
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How to get the parents of a Python class?
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Use the following attribute:
cls.__bases__
From the docs:
The tuple of base classes of a class
object.
Example:
>>> str.__bases__
(<type 'basestring'>,)
Another example:
>>> class A(object):
... pass
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>>> cl...
How to save an HTML5 Canvas as an image on a server?
...ntext.stroke();
</script>
Convert canvas image to URL format (base64)
var dataURL = canvas.toDataURL();
Send it to your server via Ajax
$.ajax({
type: "POST",
url: "script.php",
data: {
imgBase64: dataURL
}
}).done(function(o) {
con...
Can media queries resize based on a div element instead of the screen?
I would like to use media queries to resize elements based on the size of a div element they are in. I cannot use the screen size as the div is just used like a widget within the webpage, and its size can vary.
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Mixin vs inheritance
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What is the difference between a mixin and inheritance?
A mix-in is a base class you can inherit from to provide additional functionality. Pseudocode example:
class Mixin:
def complex_method(self):
return complex_functionality(self)
The name "mix-in" indicates it is intended to b...
What is the difference between a web API and a web service?
...SDL from which you can create client stubs automatically. Web Services are based on the SOAP protocol.
ASP.NET Web API is a newer Microsoft framework which helps you to build REST based interfaces. The response can be either JSON or XML, but there is no way to generate clients automatically because ...
Build the full path filename in Python
...ath name to a module. How do I build the file path from a directory name, base filename, and a file format string?
4 Answe...