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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
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Not a one-liner, and calls can't be daisy-chained... but I'll use this approach.
– tfmontague
Jul 26 '14 at 21:43
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C++11 range based loop: get item by value or reference to const
...copy (such as modifying the retrieved object without altering the original one), then it is preferable to use a const &.
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How can I tell if a DOM element is visible in the current viewport?
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Also curious about @amartynov's question. Anyone know how to simply tell if an element is hidden due to overflow of an ancestor element? Bonus if this can be detected regardless of how deeply nested the child is.
– Eric Nguyen
Nov ...
Getting individual colors from a color map in matplotlib
...lize your data such that it conforms to the range [0.0, 1.0]. This can be done using matplotlib.colors.Normalize simply as shown in the small example below where the arguments vmin and vmax describe what numbers should be mapped to 0.0 and 1.0 respectively.
import matplotlib
norm = matplotlib.colo...
How to declare a global variable in a .js file
...lert "Hello" or "Howdy" ?
However, this is much cleaner and less error prone (you don't really need to remember all the variable scoping rules):
function foo() {
window.greeting = "Hello";
}
function bar(greeting) {
alert(greeting);
}
foo();
bar("Howdy"); // alerts "Howdy"
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What should I do if the current ASP.NET session is null?
...This is because the client is given a Session statebag if he does not have one already. If the client does not transport the session cookie, we have no way of identifying the client as the same, so he will be handed a new session again and again.
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Meaning of Git checkout double dashes
... examples) before coming to Stack Overflow, I still did not understand why one would or would not want to use --. As someone who does not come from a linux background, it's not obvious what that does. To me, it appeared to be a syntax specific to git, with no description of its functional purpose. I...
What is “X-Content-Type-Options=nosniff”?
...erated content should use this header to protect their users. This is mentioned by VeraCode and OWASP which says the following:
This reduces exposure to drive-by download attacks and sites serving user uploaded content that, by clever naming, could be treated by MSIE as executable or dynamic HTML f...
What is a “Stub”?
...ing purposes. The name comes from the notion of a Stunt Double in movies. (One of his aims was to avoid using any name that was already widely used.) Meszaros then defined four particular kinds of double:
Dummy objects are passed around but never actually used. Usually they are just used to ...
What is the difference between NaN and None?
... empty. In my opinion, the value read to that dictionary entry should be None but instead nan is assigned. Surely None is more descriptive of an empty cell as it has a null value, whereas nan just says that the value read is not a number.
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