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What's to stop malicious code from spoofing the “Origin” header to exploit CORS?

The way I understand it, if a client-side script running on a page from foo.com wants to request data from bar.com, in the request it must specify the header Origin: http://foo.com , and bar must respond with Access-Control-Allow-Origin: http://foo.com . ...
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Deep null checking, is there a better way?

...ing a new operation "?." to the language that has the semantics you want. (And it has been added now; see below.) That is, you'd say cake?.frosting?.berries?.loader and the compiler would generate all the short-circuiting checks for you. It didn't make the bar for C# 4. Perhaps for a hypothetic...
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How to change the background color of the options menu?

...arent="Theme.AppCompat.Light.DarkActionBar"> ... <item name="android:itemBackground">@color/overflow_background</item> ... </style> Tested from API 4.2 to 5.0. share | ...
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How can I stage and commit all files, including newly added files, using a single command?

How can I stage and commit all files, including newly added files, using a single command? 12 Answers ...
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Proper indentation for Python multiline strings

... one line two line three""" Since the newlines and spaces are included in the string itself, you will have to postprocess it. If you don't want to do that and you have a whole lot of text, you might want to store it separately in a text file. If a text file does not work ...
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Class method differences in Python: bound, unbound and static

... In Python, there is a distinction between bound and unbound methods. Basically, a call to a member function (like method_one), a bound function a_test.method_one() is translated to Test.method_one(a_test) i.e. a call to an unbound method. Because of that, a call to...
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What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?

What is the difference between the COPY and ADD commands in a Dockerfile, and when would I use one over the other? 13 A...
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Seeding the random number generator in Javascript

Is it possible to seed the random number generator (Math.random) in Javascript? 13 Answers ...
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Stateless vs Stateful - I could use some concrete information

...nterested in articles which have some concrete information about stateless and stateful design in programming. I'm interested because I want to learn more about it, but I really can't find any good articles about it. I've read dozens of articles on the web which vaguely discuss the subject, or they'...
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insert multiple rows via a php array into mysql

I'm passing a large dataset into a MySQL table via PHP using insert commands and I'm wondering if its possible to insert approximately 1000 rows at a time via a query other than appending each value on the end of a mile long string and then executing it. I am using the CodeIgniter framework so its f...