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凤姐变身天使投资人约战董明珠：你年纪太大了 - 资讯 - 清泛网 - 专注C/C++...
...论的人儿”。淘皮客以不说没态度的话为宗旨，主要客群定位是16-30岁的具有强烈的自我表达欲望的新时代用户。
“凤姐”此次再次高调发声，也有人质疑是在炒作“淘皮客”。
当天在宣布自己投资人的新身份之后，“凤姐”...
C++ 打开文件，以清空覆盖的方式 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 以追加的方式打开文件
ios::ate： 文件打开后定位到文件尾，ios:app就包含有此属性
ios::binary： 以二进制方式打开文件，缺省的方式是文本方式。两种方式的区别见前文
ios::in： 文件以输入方式打开（...
BLE（三）APP开发步骤 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...晰了许多。首先，可以通过startLeScan、LeScanCallback等方法定位到扫描BLE外围设备的相关代码段；然后，根据connectGatt、BluetoothGattCallback等api锁定设备连接的相关函数，并找到指令交互部分，最后梳理出整个控制流程。
【转】APP Inventor2 调用位置传感器在高德地图上显示当前位置存在偏差？你...
...手机上显示如下，我怎么去湖里了，是坐船去了还是手机定位偏差太大了？都不是，是因为坐标没有经过正确的换算。
将代码改一改，利用高德的Web API进行坐标转换，更详细的坐标转换方法请去高德官网查看。
获取...
How many system resources will be held for keeping 1,000,000 websocket open? [closed]
...al info on how the kernel was tuned? max file descriptors/tcp window sizes etc?
– quixver
Jun 21 '14 at 21:14
15
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Maven: how to do parallel builds?
...alik Yes, exactly, 3 threads on dual core, 6 threads on quad core systems, etc.
– t0r0X
Aug 6 '14 at 11:25
1
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How to find out the number of CPUs using python
I want to know the number of CPUs on the local machine using Python. The result should be user/real as output by time(1) when called with an optimally scaling userspace-only program.
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How to improve Netbeans performance?
...es.
How to set:
Edit the file C:\Program Files\NetBeans <version>\etc\netbeans.conf
(check your NetBeans installation folder if you installed it in another location)
Find the line that says
netbeans_default_options="..."
Add the option -J-Xverify:none to the list of options.
Restart Net...
How to get overall CPU usage (e.g. 57%) on Linux [closed]
I am wondering how you can get the system CPU usage and present it in percent using bash, for example.
5 Answers
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C++ performance vs. Java/C#
...e is Intel or AMD; Pentium 4, Core Solo, or Core Duo; or if supports SSE4, etc.
A C++ program has to be compiled beforehand usually with mixed optimizations so that it runs decently well on all machines, but is not optimized as much as it could be for a single configuration (i.e. processor, instruc...