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Difference between == and ===
...er two object references both refer to the same object instance.
Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/us/jEUH0.l
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Why Does OAuth v2 Have Both Access and Refresh Tokens?
...good thread talking about uses of refresh tokens: OAuth Archives.
A quote from the above, talking about the security purposes of the refresh token:
Refresh tokens... mitigates the risk of a long-lived access_token leaking (query param in a log file on an insecure resource server, beta or poorly...
In C, do braces act as a stack frame?
...fiers declared within the braces are only accessible within the braces, so from a programmer's point of view, it is like they are pushed onto the stack as they are declared and then popped when the scope is exited. However, compilers don't have to generate code that pushes/pops anything on entry/ex...
How to get Maven project version to the bash command line
Previous I issued a question on how to change Maven project vesion from command line which lead me to a new issue.
28 Ans...
Relatively position an element without it taking up space in document flow
... absolute; left: 100px; top: 100px">
Hi there, I'm 100px offset from where I ought to be, from the top and left.
</div>
</div>
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Difference between Static and final?
...od can call only other static methods and can not call a non-static method from it unless it has/creates an instance of the class.
A static method can be accessed directly by the class name and doesn’t need any object.
Syntax: Class.methodName()
A static method cannot refer to this or super ke...
How can you diff two pipelines in Bash?
...names like /dev/fd/63 to get a filename that the command can open and read from to actually read from an already-open file descriptor that bash set up before exec'ing the command. (i.e. bash uses pipe(2) before fork, and then dup2 to redirect from the output of quux to an input file descriptor for ...
What is the difference between `raise “foo”` and `raise Exception.new(“foo”)`?
...se" error than a RuntimeError, because you have to do more work to recover from it.
So which you want depends on how your project does its error handling. For instance, in our daemons, the main loop has a blank rescue which will catch RuntimeErrors, report them, and then continue. But in one or two...
When would you use a List instead of a Dictionary?
...ent a custom hashtable that does not implement the IDictionary interface.
from here
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Is there a portable way to print a message from the C preprocessor?
I would like to be able to do something like
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