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Why do function pointer definitions work with any number of ampersands '&' or asterisks '*'?
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There are a few pieces to this that allow all of these combinations of operators to work the same way.
The fundamental reason why all of these work is that a function (like foo) is implicitly convertible to a pointer to the function. This is why void (*p1_foo)() = foo; works: ...
Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...t integer.
So int is a "smaller" datatype than NSUInteger, therefore the compiler warning.
See also NSUInteger in the "Foundation Data Types Reference":
When building 32-bit applications, NSUInteger is a 32-bit unsigned
integer. A 64-bit application treats NSUInteger as a 64-bit unsigned
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Does async(launch::async) in C++11 make thread pools obsolete for avoiding expensive thread creation
...th these numbers on an 8 core (AMD Ryzen 7 2700X) system running Fedora 29 compiled with clang version 7.0.1 and libc++ (not libstdc++):
Do nothing calls per second: 35365257
Empty calls per second: 35210682
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Inheritance and Overriding __init__ in python
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std::auto_ptr to std::unique_ptr
With the new standard coming (and parts already available in some compilers), the new type std::unique_ptr is supposed to be a replacement for std::auto_ptr .
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Give all the permissions to a user on a DB
...EGIN
-- RAISE NOTICE '%', ( -- use instead of EXECUTE to see generated commands
EXECUTE (
SELECT string_agg(format('GRANT USAGE ON SCHEMA %I TO my_user', nspname), '; ')
FROM pg_namespace
WHERE nspname <> 'information_schema' -- exclude information schema and ...
AND n...
Why do we use $rootScope.$broadcast in AngularJS?
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158
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SQL, Postgres OIDs, What are they and why are they useful?
...pecify WITH OIDS when creating
the table. This variable can be
enabled for compatibility with old
applications that do not follow this
behavior.
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How to create PDFs in an Android app? [closed]
...ogella.de/articles/JavaPDF/article.html (tutorial)
http://tutorials.jenkov.com/java-itext/image.html (images tutorial)
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How to make the 'cut' command treat same sequental delimiters as one?
...he column-based, 'space'-adjusted text stream. I'm trying to use the cut command in the following manner:
5 Answers
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