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Can a local variable's memory be accessed outside its scope?
...back, you have to put the compiler in a special "unsafe" mode, and put the word "unsafe" in your program, to call attention to the fact that you are probably doing something dangerous that could be breaking the rules.
For further reading:
What if C# did allow returning references? Coincidentally...
Is there a difference between “==” and “is”?
...istency, recommends:
Equality comparison should be reflexive. In other words, identical
objects should compare equal:
x is y implies x == y
We can see that this is the default behavior for custom objects:
>>> class Object(object): pass
>>> obj = Object()
>>> ...
Why is it bad practice to call System.gc()?
...econd call will do (live* W1 + 0 * W2) work and reclaim nothing. In other words we have done (live * W1) work and achieved absolutely nothing.
We can model the efficiency of the collector as the amount of work needed to collect a unit of garbage; i.e. efficiency = (live * W1 + garbage * W2) / garb...
Which is faster: while(1) or while(2)?
...ate my answer to address it. What I meant, though, was that the standard's wording "... until the controlling expression compares equal to 0" implies evaluating <expr> == 0; that's what "compares equal to 0" means in C. That comparison is part of the semantics of the while loop. There is no i...
Why is “final” not allowed in Java 8 interface methods?
...hat doesn't break existing code.
Could reintroducing the 'package' keyword as an access-specifier be
viable. It's absence of a specifier in an interface would imply
public-access and the absence of a specifier in a class implies
package-access. Which specifiers make sense in an interface...
Are Exceptions in C++ really slow
...l exception specifications were removed, and replaced with the noexcept keyword.
The C++11 standard also added support for storing and rethrowing exceptions, which is great for propagating C++ exceptions across C language callbacks. This support effectively constrains how the current exception can ...
Why do people use Heroku when AWS is present? What distinguishes Heroku from AWS? [closed]
...'m a beginner RoR programmer who's planning to deploy my app using Heroku. Word from my other advisor friends says that Heroku is really easy, good to use. The only problem is that I still have no idea what Heroku does...
...
How does Access-Control-Allow-Origin header work?
...e), the behavior is identical to how a simple request is handled. In other words, a non-simple request whose preflight is successful is treated the same as a simple request (i.e., the server must still send Access-Control-Allow-Origin again for the actual response).
The browsers sends the actual re...
Absolute vs relative URLs
...http://en.wikipedia.org/wiki/URI_scheme#Generic_syntax
foo://username:password@example.com:8042/over/there/index.dtb;type=animal?name=ferret#nose
\ / \________________/\_________/ \__/ \___/ \_/ \_________/ \_________/ \__/
| | | | | | ...
Difference between timestamps with/without time zone in PostgreSQL
...zone is the set of rules/history about DST changes and other changes. Your wording seems superfluous. And your statement that "an offset is a time zone plus rules for DST" is simply wrong: an offset is merely a number of hours, minutes, and seconds – nothing more, nothing less.
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