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Which UUID version to use?
...version 4.
Version 1: This generates a unique ID based on a network card MAC address and a timer. These IDs are easy to predict (given one, I might be able to guess another one) and can be traced back to your network card. It's not recommended to create these.
Version 4: These are generated from r...
Cross compile Go on OSX?
...is in the system dir. Otherwise you need to be logged in as super user. On Mac you may need to enable/configure SU access (it is not available by default), but if you have managed to install Go you possibly already have root access.
2) Once you have all cross compilers built, you can happily cross ...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...不要分配内存
代码的执行效果会受到设备CPU,设备内存,系统版本等诸多因素的影响。为了确保代码能够在不同设备上都运行良好，需要最大化代码的效率。
避免创建不必要的对象
虽然GC可以回收不用的对象，可是为这些对象...
Finding local IP addresses using Python's stdlib
...yname(socket.gethostname())
This won't work always (returns 127.0.0.1 on machines having the hostname in /etc/hosts as 127.0.0.1), a paliative would be what gimel shows, use socket.getfqdn() instead. Of course your machine needs a resolvable hostname.
...
Microsoft Excel mangles Diacritics in .csv files?
... options carefully.)
* Except when you can't, (at least) Excel 2011 for Mac's Import Wizard does not actually always work with all encodings, regardless of what you tell it. </anecdotal-evidence> :)
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窝窝与众美联合并 新公司命名“众美窝窝” - 资讯 - 清泛网 - 专注C/C++及内核技术
...购而非入股，将众美联的会员企业全部纳入众美窝窝生态系统。
通过公开资料可知，众美联云集了小南国、眉州东坡、外婆家等国内知名餐饮品牌，和中粮、双汇、太太乐等优秀餐饮行业上游供应商。无论对于哪家O2O平台来说...
Why is reading lines from stdin much slower in C++ than Python?
...ss -c ./a.out < in
CALL COUNT
__mac_syscall 1
<snip>
open 6
pread 8
mprotect 17
mmap ...
Is it possible to get the iOS 5.1 SDK for Xcode 4.2 on Snow Leopard?
...un code on a device running iOS 5.1 you can do this:
If you have another Mac running Lion and Xcode 4.3.1 you can copy the files from:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/5.1 (9B176)
Place the copied files in the equivalent place on your Snow L...
Why does the C preprocessor interpret the word “linux” as the constant “1”?
... a complex maze of #ifdefs to allow for differences between systems. These macro definitions were generally set by the compiler itself, not defined in a library header file. Since there were no real rules about which identifiers could be used by the implementation and which were reserved for program...
Styling input buttons for iPad and iPhone
...input buttons on my website, but on IOS devices the styling is replaced by Mac's default buttons. Is there a way to style buttons for iOS, or a way to maybe make a hyperlink that behaves like a submit button?
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