大约有 3,285 项符合查询结果（耗时：0.0221秒） [XML]
What are bitwise shift (bit-shift) operators and how do they work?
...r multiplications when possible. What? Bitshifts are orders of magnitude faster when it comes down to the low level operations of a CPU, a good optimizing compiler would do the exact opposite, that is, turning ordinary multiplications by powers of two into bit shifts.
– Mahn
...
What's the fuss about Haskell? [closed]
...or parallelism than pretty much any general purpose language, along with a fast, native code compiler. There is really no competition with this kind of support for parallel styles:
semi-implicit parallelism via thread sparks
explicit threads
data parallel arrays
actors and message passing
transact...
How do I push amended commit to the remote Git repository?
...r
Even this may not work as Git allows remote repositories to refuse non-fastforward pushes at the far end by using the configuration variable receive.denynonfastforwards. If this is the case the rejection reason will look like this (note the 'remote rejected' part):
! [remote rejected] master -...
Cutting the videos based on start and end time using ffmpeg
...
Note: it is faster to supply -ss BEFORE the input file (before -i), because that way ffmpeg will skip directly to the location. However, that will also set the time "zero" to that location, meaning that -to will point to the wrong time. ...
使用 C++ 处理 JSON 数据交换格式 - C/C++ - 清泛网 - 专注C/C++及内核技术
...并不能直接使用。在此我们使用 Json::Writer 的子类：Json::FastWriter、Json::StyledWriter、Json::StyledStreamWriter。
顾名思义，用 Json::FastWriter 来处理 json 应该是最快的，下面我们来试试。
Json::FastWriter fast_writer;
std::cout << fast_writer.write(r...
Is an index needed for a primary key in SQLite?
...e key...Searching for a record with a specific rowid ...is around twice as fast as a similar search made by specifying any other PRIMARY KEY or indexed value.
– matreshkin
Aug 1 '16 at 13:27
...
Fastest method of screen capturing on Windows
... Thanks. I heard about this method a while ago that was said to be faster than reading from the front buffer. Do you honestly do it that way and does it work properly?
– someguy
Feb 28 '11 at 16:54
...
How to convert floats to human-readable fractions?
...u are asking for. Its based on the theory of continued fractions and very fast and fairly compact.
I have used versions of this customized for specific numerator and denominator limits.
/*
** find rational approximation to given real number
** David Eppstein / UC Irvine / 8 Aug 1993
**
** With co...
Iterate over the lines of a string
...s are traversed, not just built.
IOW, the naive implementation is so much faster it isn't even funny: 6 times faster than my attempt with find calls, which in turn is 4 times faster than a lower-level approach.
Lessons to retain: measurement is always a good thing (but must be accurate); string me...
Python Graph Library [closed]
...
I would like to plug my own graph python library: graph-tool.
It is very fast, since it is implemented in C++ with the Boost Graph Library, and it contains lots of algorithms and extensive documentation.
share
|
...