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...o_get_epoll_ct(), NULL, NULL);
return 0;
}
运行结果：
Producer:49 produce task 0
Consumer:69 consume task 0
Producer:49 produce task 1
Consumer:69 consume task 1
Producer:49 produce task 2
Consumer:69 consume task 2
Producer:49 produce task 3
Consumer:69 consume task 3
Producer:4...
how to convert from int to char*?
...ay<char, 10> str;
std::to_chars(str.data(), str.data() + str.size(), 42);
In C++11, use std::to_string as:
std::string s = std::to_string(number);
char const *pchar = s.c_str(); //use char const* as target type
And in C++03, what you're doing is just fine, except use const as:
char const*...
What is the best way to compute trending topics or tags?
Many sites offer some statistics like "The hottest topics in the last 24h". For example, Topix.com shows this in its section "News Trends". There, you can see the topics which have the fastest growing number of mentions.
...
How do I use extern to share variables between source files?
... -g
OFLAGS = -O3
WFLAG1 = -Wall
WFLAG2 = -Wextra
WFLAG3 = -Werror
WFLAG4 = -Wstrict-prototypes
WFLAG5 = -Wmissing-prototypes
WFLAGS = ${WFLAG1} ${WFLAG2} ${WFLAG3} ${WFLAG4} ${WFLAG5}
UFLAGS = # Set on command line only
CFLAGS = ${SFLAGS} ${GFLAGS} ${OFLAGS} ${WFLAGS} ${UFLAGS}
LDFLAGS =
L...
fastest (low latency) method for Inter Process Communication between Java and C/C++
...ferent cores: 22 microseconds
Named pipes, same core: 4-5 microseconds !!!!
Named pipes, taskset different cores: 7-8 microseconds !!!!
so
TCP overhead is visible
scheduling overhead (or core caches?) is also the culprit
At the same time Thread.sleep(0) (which as strace sh...
Iteration over std::vector: unsigned vs signed index variable
... |
edited Apr 9 at 12:14
Maarten Bodewes
76.4k1212 gold badges114114 silver badges213213 bronze badges
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Difference between angle bracket < > and double quotes “ ” while including header files in C++? [dup
...
264
It's compiler dependent. That said, in general using " prioritizes headers in the current work...
What is a plain English explanation of “Big O” notation?
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41 Answers
41
Active
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Difference between API and ABI
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iliketocode
6,39244 gold badges3838 silver badges5454 bronze badges
answered Sep 24 '10 at 5:29
djnadjna
...
LEFT JOIN only first row
...t query !!!
– Thư Sinh
Mar 10 at 7:48
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