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Heap vs Binary Search Tree (BST)
...ata
tested on Ubuntu 19.04, GCC 8.3.0 in a Lenovo ThinkPad P51 laptop with CPU: Intel Core i7-7820HQ CPU (4 cores / 8 threads, 2.90 GHz base, 8 MB cache), RAM: 2x Samsung M471A2K43BB1-CRC (2x 16GiB, 2400 Mbps), SSD: Samsung MZVLB512HAJQ-000L7 (512GB, 3,000 MB/s)
So clearly:
heap insert time is b...
Visual Studio 2012 Web Publish doesn't copy files
...me issue and realized it was because the publish settings defaults to "Any CPU", but my solution is set to "x86". Changing the Settings in the Publish to x86 fixed the issue.
– Sam
Apr 17 '13 at 17:57
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Convert from enum ordinal to enum type
...nst char CLUBS=0;' etc... Yes,a HashMap lookup is O(1), but the memory and CPU overhead of a HashMap, in this case make it many orders of magnitude slower and resource hungry than calling .values() directly! No wonder Java is such a memory hog if people write like this...
– Les...
2015互联网结束补贴战 从相杀到相爱只需一个长假 - 资讯 - 清泛网 - 专注C/...
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逐利合并结束补贴战
滴滴和快的合并后，外界最关心的问题是以后用手机叫车还有补贴吗？
在2015年第一财季，58同城净亏损5240万美元。而滴滴和快的之间的补贴烧钱大战也是愈演愈烈。“有一天，我们甚至烧掉了1000万美元...
Convert dmesg timestamp to custom date format
...el timestamps in dmesg are derived from an uptime value kept by individual CPUs. Over time this gets out of sync with the real time clock. As a result, the most accurate conversion for recent dmesg entries will be based on the CPU clock rather than /proc/uptime. For example, on a particular CentOS 6...
How do you attach and detach from Docker's process?
...er exec -it 91262536f7c9 bash
root@91262536f7c9:/# ps -aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 18160 1908 ? Ss+ 04:03 0:00 /bin/bash
root 15 0.0 0.0 18164 1892 ? Ss 04:03 0:00 bash
root 28 0.0 0....
Thread vs ThreadPool
...than the main thread pool. If one has a lot of tasks to perform which are CPU intensive but won't block, it may be helpful to dispatch them using a pool of application threads (one per CPU core) which is separate from the "main" threadpool, since using more threads than cores will be counterprod
JavaScript, Node.js: is Array.forEach asynchronous?
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technically, forEach isn't "blocking", as the CPU never goes to sleep. It's synchronous and CPU-bound, which can feel like "blocking" when you expect the node app to be responsive to events.
– Dave Dopson
Aug 2 '11 at 17:58
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Java's Virtual Machine and CLR
... VM's, with no notion of "registers" like we're used to seeing in a modern CPU like the x86 or PowerPC. The evaluation of all expressions ((1 + 1) / 2) is performed by pushing operands onto the "stack" and then popping those operands off the stack whenever an instruction (add, divide, etc) needs to ...
What is a good regular expression to match a URL? [duplicate]
... a bit more info on the comment by @RubenMartinezJr. - it does max out the CPU on Chrome and Firefox (Mac OS), but interestingly does not max out the CPU on Safari.
– rinogo
Nov 9 '17 at 14:46
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