大约有 30,000 项符合查询结果（耗时：0.0502秒） [XML]
remove all variables except functions
...ion list.objects
# 3 integer x
> list.objects(env = x)
# Error in list.objects(env = x) : "x" must be an environment
share
|
improve this answer
|
follow
...
How different is Objective-C from C++? [closed]
... Second example is not C++ code. It's C code that gave you an error when you tried to compile it with C++ compiler. If you want old C++ as close to original, you'd write Foo* bar = reinterpret_cast< Foo* >(malloc(sizeof(Foo)); then maybe use inplace constructor.. But as of today i...
Why can't I define a default constructor for a struct in .NET?
...ily be used..". It may have been true in a previous C# but it's a compiler error to declare a struct, not new It, then try to use its members
– Caius Jard
Mar 10 at 7:14
...
How is the Linux kernel tested ?
...
Fault Injection Framework (included in Linux kernel) allows for infusing errors and exceptions into an application's logic to achieve a higher coverage and fault tolerance of the system.
share
|
i...
Android. Fragment getActivity() sometimes returns null
In developer console error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
...
What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an
... the system-call. A value in the range between -4095 and -1 indicates
an error, it is -errno.
Only values of class INTEGER or class MEMORY are passed to the kernel.
Remember this is from the Linux-specific appendix to the ABI, and even for Linux it's informative not normative. (But it is ...
How does “cat
...f the variable PS2, processed as described in Shell Variables, to standard error before reading each line of input until the delimiter has been recognized.
Examples
Some examples not yet given.
Quotes prevent parameter expansion
Without quotes:
a=0
cat <<EOF
$a
EOF
Output:
0
With qu...
Difference between string and char[] types in C++
...SVCP90.dll -> you get two heaps -> memory cannot be freed, assertion errors in debug mode if libfoo modifies the string reference and hands an std::string with a new pointer back.
– Cygon
Aug 21 '09 at 20:27
...
GNU Makefile rule generating a few targets from a single source file
...
This answer has an error. Yo can have parallel builds working perfectly. You just have to change file-a.out file-b.out: input.in.intermediate to file-a.out file-b.out: input.in.intermediate ; See stackoverflow.com/questions/37873522/… for mor...
How do I prevent site scraping? [closed]
... proxy servers and VPNs, you will negatively affect real users.
Make your error message nondescript if you do block
If you do block / limit access, you should ensure that you don't tell the scraper what caused the block, thereby giving them clues as to how to fix their scraper. So a bad idea would...