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How can HTML5 “replace” Flash? [closed]
...lash ads, but it is flash. Now on a mobile phone an ad that can cause the cpu to spike to 100% is not good and I stand by SJ assertion that Flash is harmful.
– graham.reeds
May 26 '10 at 11:00
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Why does C++ need a separate header file?
...ough additional information to load and link the code. Then, you point the CPU at the entry point, and let it run. This is fundamentally different from Java or C#, where the code is compiled into an intermediary bytecode containing metadata on its contents.
– DevSolar
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Why is String.chars() a stream of ints in Java 8?
...or unboxing within an inner loop, you'd see that it can impose significant CPU and garbage collection overhead.
When designing the Streams API, it was clear that we had to support primitives. The boxing/unboxing overhead would kill any performance benefit from parallelism. We didn't want to support...
Count(*) vs Count(1) - SQL Server
..., query store overhead, triggers, etc.). It is maybe a few thousand extra CPU instructions. So, count(1) does a tiny bit less work during compilation (which will usually happen once and the plan is cached across multiple subsequent executions). For execution time, assuming the plans are the same ...
How much is the overhead of smart pointers compared to normal pointers in C++?
...tps://vimeo.com/131189627
It goes deep into the implementation details and CPU architecture for write barriers, atomic locks etc. once listening you will never talk about this feature being cheap. If you just want a proof of the magnitude slower, skip the first 48 minutes and watch him running examp...
凤姐当天使 徐小平胡海泉薛蛮子王刚怎么看？ - 资讯 - 清泛网 - 专注C/C++...
...们投资偏硬技术比较多一点，一般现在的天使碰不到这些问题，你要投硬技术的时候，其实是特别痛苦的一件事，比如说现在天使投资都说人不好，我们就不投了，投硬技术，往往真理就在这个人的手里，他能掌握这个核心技术...
Fastest hash for non-cryptographic uses?
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if you have the benefit/luxury of a newer Intel cpu, there is a crc32c assembly command that is...probably really fast (though isn't the traditional crc32 value). See also xxhash code.google.com/p/xxhash
– rogerdpack
Dec 2 '13 at 20:...
What are important languages to learn to understand different approaches and concepts? [closed]
...oreover, it is also a very universal, C compilers exist for (almost) every CPU architecture ever devised.
– dietr
May 12 '11 at 8:05
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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...内存到CentralCache里。 解决了ptmalloc2中arena之间不能迁移的问题。
Tcmalloc占用更少的额外空间。例如，分配N个8字节对象可能要使用大约8N * 1.01字节的空间。即，多用百分之一的空间。Ptmalloc2使用最少8字节描述一个chunk。
更快。...
Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
...e pricing plans), 2: it looks like pricing is not based on clock hours but CPU hours, which is appealing, but a little awkward, 3: permanency of data and configurations (a la EBS and AMIs) isn't clear. Nonetheless their $8 daily pass doesn't sound bad.
– Iterator
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