大约有 16,000 项符合查询结果（耗时：0.0363秒） [XML]
Passing variable arguments to another function that accepts a variable argument list
...hat takes a variable argument list with , ... in the signature. If you've converted the variable arguments to a va_list, you can pass the va_list to another function that only takes a va_list, but that function (or one that it calls) must have some way of knowing what's in the va_list.
...
“#include” a text file in a C program as a char[]
...
You have two possibilities:
Make use of compiler/linker extensions to convert a file into a binary file, with proper symbols pointing to the begin and end of the binary data. See this answer: Include binary file with GNU ld linker script.
Convert your file into a sequence of character constants...
How can I time a code segment for testing performance with Pythons timeit?
...the connection. Once you have your code working correctly is the correct point at which to think about using timeit on it!
Specifically, if the function you want to time is a parameter-less one called foobar you can use timeit.timeit (2.6 or later -- it's more complicated in 2.5 and before):
timei...
nullable object must have a value
... resolved my problem, i just change null able object to non null able, and convert datetime to string directly, not by datetimeobject.value.datetime.tostring()
– adnan
Dec 28 '16 at 12:41
...
Convert text into number in MySQL query
Is it possible to convert text into number within MySQL query? I have a column with an identifier that consists a name and a number in the format of "name-number". The column has VARCHAR type. I want to sort the rows according the number (rows with the same name) but the column is sorted according d...
AttributeError: 'module' object has no attribute 'urlopen'
...
A Python 2+3 compatible solution is:
import sys
if sys.version_info[0] == 3:
from urllib.request import urlopen
else:
# Not Python 3 - today, it is most likely to be Python 2
# But note that this might need an update when Python 4
# might be around one...
Java equivalent of unsigned long long?
...gs (what "wrapping integer" types are). Any size number should implicitly convert to any size ring, but rings should only convert to numbers via function or via explicit typecast to the same size number. The behavior of C, where unsigned types generally behave as algebraic rings but sometimes beha...
How to get the unix timestamp in C#
...
Error for the second solution: Cannot convert source type 'double' to target type 'long'.
– Pixar
Sep 4 '15 at 15:45
...
Find the nth occurrence of substring in a string
...on is going to be very inefficient for large strings when the match you're interested is near the beginning. It always looks at the whole string. It's clever but I wouldn't recommend this to someone who is new to Python and just wants to learn a good way to do it.
– Mark Byers
...
How can I reliably get an object's address when operator& is overloaded?
...ent and returning no result. This reference to a function can be trivially converted into a pointer to function -- from @Konstantin: According to 13.3.3.2 both T & and T * are indistinguishable for functions. The 1st one is an Identity conversion and the 2nd one is Function-to-Pointer conversion...