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Size of character ('a') in C/C++
... In the C++ Standard it's section 2.13.2/1, in C 6.4.4.4, at least in the doc I've got.
– anon
Jan 31 '10 at 19:24
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What does @synchronized() do as a singleton method in objective C?
...e I've ever seen any scheme that was "perfectly thread safe". At the very least you need to know what you're doing and not just blindly copy code from somewhere.
– Hot Licks
Jan 25 '15 at 14:54
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Why does String.valueOf(null) throw a NullPointerException?
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Method Overloading. Can you overuse it?
On casting null
There are at least two situations where explicitly casting null to a specific reference type is necessary:
To select overloading (as given in above example)
To give null as a single argument to a vararg parameter
A simple example of t...
How to read the content of a file to a string in C?
What is the simplest way (least error-prone, least lines of code, however you want to interpret it) to open a file in C and read its contents into a string (char*, char[], whatever)?
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Forward an invocation of a variadic function in C
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At least one argument must be passed, myfun("") is not supported - is there a solution how to fix it? (MSVC prints: too few arguments for call)
– mvorisek
Jul 20 at 17:28
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What does threadsafe mean?
...UI programs have multiple execution paths and hence threads - there are at least two, one for processing the display of the GUI and handing user input, and at least one other for actually performing the operations of the program.
This is done so that the UI is still responsive while the program is ...
python: how to send mail with TO, CC and BCC?
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smtplib.SMTP does not send lists as to addresses. At least not on python 2.7.2
– LostMohican
Apr 5 '12 at 8:06
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Unable to Cast from Parent Class to Child Class
...casting must be an instance of the class that you're downcasting to (or at least, the class you're downcasting to must be within the instance's class hierarchy), otherwise the cast will fail.
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Where should @Service annotation be kept? Interface or Implementation?
...ervice, ...) at an interface,
have multiple classes that implements it,
at least two classes become Spring Beans, and
have an injection point that use the interface for type based injection,
then you will get and NoUniqueBeanDefinitionException
(or you have a very special configurations setup, wi...
Check if null Boolean is true results in exception
...oolean) (where myBoolean is Boolean) does not raise a compiler error or at least a warning. This is a gotcha for sure.
– Josh M.
Dec 13 '18 at 13:50
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