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CORS - What is the motivation behind introducing preflight requests?
...g confused as to the purpose of the preflight request but I think I've got it now.
The key insight is that preflight requests are not a security thing. Rather, they're a not-changing-the-rules thing.
Preflight requests have nothing to do with security, and they have no bearing on applications th...
How to detect if a function is called as constructor?
...ssible [prior to ES2015]. There simply isn't enough information available within the function to make a reliable inference.
Looking at the ECMAScript 3rd edition spec, the steps taken when new x() is called are essentially:
Create a new object
Assign its internal [[Prototype]] property to the pro...
Accessing the web page's HTTP Headers in JavaScript
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It's not possible to read the current headers. You could make another request to the same URL and read its headers, but there is no guarantee that the headers are exactly equal to the current.
Use the following JavaScript ...
How to unit test abstract classes: extend with stubs?
I was wondering how to unit test abstract classes, and classes that extend abstract classes.
14 Answers
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what is “strict mode” and how is it used?
...eloper Network, and I came across something called "strict mode" . I read it over and I'm having trouble understanding what it does. Can someone briefly explain (in general) what its purpose is and how it is useful?
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Creating a DateTime in a specific Time Zone in c#
I'm trying to create a unit test to test the case for when the timezone changes on a machine because it has been incorrectly set and then corrected.
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django syncdb and an updated model
I have recently updated my model, added a BooleanField to it however when I do python manage.py syncdb , it doesn't add the new field to the database for the model. How can I fix this ?
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Really Cheap Command-Line Option Parsing in Ruby
EDIT: Please, please , please read the two requirements listed at the bottom of this post before replying. People keep posting their new gems and libraries and whatnot, which clearly don't meet the requirements.
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How do I create my own URL protocol? (e.g. so://…) [closed]
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The portion with the HTTP://,FTP://, etc are called URI Schemes
You can register your own through the registry.
HKEY_CLASSES_ROOT/
your-protocol-name/
(Default) "URL:your-protocol-name Protocol"
URL Protocol ""
shell/
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What is __future__ in Python used for and how/when to use it, and how it works
... modules. I do not understand what __future__ is for and how/when to use it even after reading the Python's __future__ doc .
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