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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
...pdate(text);
hash = hmac.digest('hex');
console.log("Method 2: ", hash);
Tested on node v6.2.2 and v7.7.2
See https://nodejs.org/api/crypto.html#crypto_class_hmac. Gives more examples for using the streaming approach.
sha...
Finding three elements in an array whose sum is closest to a given number
...A, but now you don't need the target value anymore.
Clearly, if we simply test all possible 3-tuples, we'd solve the problem in O(n3) -- that's the brute-force baseline. Is it possible to do better? What if we pick the tuples in a somewhat smarter way?
First, we invest some time to sort the array,...
Overloaded method selection based on the parameter's real type
...tuitive if you pass null. The key to understanding this puzzle is that the test for which method or constructor is most specific does not use the actual parameters: the parameters appearing in the invocation.
They are used only to determine which overloadings are applicable. Once the compiler determ...
_DEBUG vs NDEBUG
... causes an increase in the number of configurations you have to build (and test) for arguably small benefit.
With any of these options, if you use third party code as part of your project, you'll have to be aware of which convention it uses.
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How to get all properties values of a JavaScript Object (without knowing the keys)?
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Why would you need to test with hasOwnProperty()? How would the key be iterated over within the loop of that object hasn't got the property?
– 1252748
Aug 25 '14 at 1:16
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What is the relation between BLAS, LAPACK and ATLAS
...org/blas/blast-forum, but (a) there's no enforcement--a standard without a test suite isn't really a standard--and (b) I don't think that anyone implements the full set of interfaces described by that document. It's, uh, aspirational.
– Stephen Canon
Nov 10 '19...
Should I use px or rem value units in my CSS? [closed]
...for one browser to have diverged ever so slightly to, say 15px or 18px. In testing, however I have not seen a single example where a browser using default settings in a system using default settings had any value other than 16px. If you find such an example, please share it with me.
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Is it good style to explicitly return in Ruby?
...did - and it failed. Fortunately at least it showed up in some functional tests.
– Tim Holt
Nov 30 '12 at 20:01
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How to check for Is not Null And Is not Empty string in SQL server?
...ine)
select iif('xxx' > '', 'true', 'false'); -- true
--
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-- NOTE - test that tab and newline is processed as expected:
select 'x x' -- tab
select 'x
x' -- newline
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Entity Attribute Value Database vs. strict Relational Model Ecommerce
...NoSQL databases.
I've never practiced NoSQL in a production context (just tested MongoDB and was impressed) but the whole point of NoSQL is being able to save items with varying attributes in the same "document".
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