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How do I use Node.js Crypto to create a HMAC-SHA1 hash?
...const text = 'I love cupcakes'
const key = 'abcdeg'
crypto.createHmac('sha1', key)
.update(text)
.digest('hex')
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Can I pass an array as arguments to a method with variable arguments in Java?
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185
The underlying type of a variadic method function(Object... args) is function(Object[] args). ...
how to “reimport” module to python then code be changed after import
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114
For Python 2.x
reload(foo)
For Python 3.x
import importlib
import foo #import the module ...
Comments in .gitignore?
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713
Yes, you may put comments in there. They however must start at the beginning of a line.
cf. ht...
how to provide a swap function for my class?
...amp; lhs, Bar& rhs) {
// ...
}
}
If swap is now used as shown in 1), your function will be found. Also, you may make that function a friend if you absolutely need to, or provide a member swap that is called by the free function:
// version 1
class Bar{
public:
friend void swap(Bar&...
How to create default value for function argument in Clojure
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171
A function can have multiple signatures if the signatures differ in arity. You can use that t...
JavaScript ternary operator example with functions
I am using jQuery 1.7.1
6 Answers
6
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What is the apply function in Scala?
...hat takes an Int parameter and returns an Int will have OO type of Function1[Int,Int].
// define a function in scala
(x:Int) => x + 1
// assign an object representing the function to a variable
val f = (x:Int) => x + 1
Since everything is an object in Scala f can now be treated as a re...
How do you increase the max number of concurrent connections in Apache?
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172
Here's a detailed explanation about the calculation of MaxClients and MaxRequestsPerChild
htt...
Check if a Postgres JSON array contains a string
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198
As of PostgreSQL 9.4, you can use the ? operator:
select info->>'name' from rabbits whe...