大约有 18,144 项符合查询结果（耗时：0.0171秒） [XML]
What is the most ridiculous pessimization you've seen? [closed]
We all know that premature optimization is the root of all evil because it leads to unreadable/unmaintainable code. Even worse is pessimization, when someone implements an "optimization" because they think it will be faster, but it ends up being slower, as well as being buggy, unmaintainable, etc...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...the last valid address from the OS */
last_valid_address = sbrk(0);
/* we don't have any memory to manage yet, so
*just set the beginning to be last_valid_address
*/
managed_memory_start = last_valid_address;
/* Okay, we're initialized and ready to go */
has_initialized = 1;
}
...
What would cause an algorithm to have O(log log n) complexity?
...
2 Answers
2
Active
...
What scalability problems have you encountered using a NoSQL data store? [closed]
...
15 Answers
15
Active
...
Safest way to convert float to integer in python?
... floating point number and return the nearest integer below or above it. However these functions return the answer as a floating point number. For example:
...
What's the difference between Ruby's dup and clone methods?
...
6 Answers
6
Active
...
What does it mean to inflate a view from an xml file?
...
6 Answers
6
Active
...
Can I record/play macros in Visual Studio 2012/2013/2015/2017/2019?
Apparently macros were dropped from Visual Studio 2012.
10 Answers
10
...
Best explanation for languages without null
...programmers are complaining about null errors/exceptions someone asks what we do without null.
11 Answers
...
SQL injection that gets around mysql_real_escape_string()
...
4 Answers
4
Active
...