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How do I create a SHA1 hash in ruby?
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For a Base64 encoded hash, to validated an Oauth signature, I used
require 'base64'
require 'hmac-sha1'
Base64.encode64((HMAC::SHA1.new('key') << 'base').digest).strip
share...
Scala: Nil vs List()
...List())
true
scala> println (Nil equals List())
true
scala> System.identityHashCode(Nil)
374527572
scala> System.identityHashCode(List())
374527572
Nil is more idiomatic and can be preferred in most cases.
Questions?
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What is Ruby equivalent of Python's `s= “hello, %s. Where is %s?” % (“John”,“Mary”)`
In Python, this idiom for string formatting is quite common
4 Answers
4
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:after vs. ::after
...Teoharov Specifically, you can use :after and ::after interchangeably with identical behaviour with the exception of IE8 which, as the question notes, requires the single colon.
– Dominic
Jul 31 '18 at 0:42
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What does dot (.) mean in a struct initializer?
...answered Nov 8 '11 at 7:48
DmitriDmitri
8,23022 gold badges2222 silver badges3131 bronze badges
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HTTP header line break style
...any such thing at all; since it essentially specifies "this is the only valid syntax for HTTP," anything else is invalid syntax. Of course, you could violate the RFC all you want, there's nobody who could stop you - but then you're technically not implementing a HTTP client anymore, just something t...
Export a graph to .eps file with R
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It's surprising how useful this is, and how hidden a feature it is.
– CompEcon
Oct 22 '13 at 3:46
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How to switch position of two items in a Python list?
...word2', 'first_name', 'last_name', 'next', 'newsletter']
The right-hand side of the slice assignment is a "reversed slice" and could also be spelled:
L[i:i+2] = reversed(L[i:i+2])
if you find that more readable, as many would.
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JavaScript replace/regex
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@seth, Your answer works, but it does not provide a solution to the code from OP. How do I have to call OP's code?
– Black
Jun 17 '19 at 9:59
add ...
extra qualification error in C++
...seValue(TDR type, const json_string& valueString);
};
This is not valid C++ but Visual Studio seems to accept it. You need to change it to the following code to be able to compile it with a standard compliant compiler (gcc is more compliant to the standard on this point).
class JSONDeserializ...