...又一起开发了Zend Engine，并免费嵌入到PHP当中，发布了PHP4从而让PHP真正发展起来。 我们可以发现，再后来PHP一些列的版本升级中，PHP一直围绕着Web来增加它的特性，这点对于准备长期使用PHP来作为网站的技术承载平台的公司来...

...可移植且易用的 C++ 接口，用于执行文件系统操作。可以从 Boost 站点免费下载此库。 使用 boost::filesystem 的第一个程序 在深入研究 Boost Filesystem Library 的更多细节之前，请看一下清单 1 中所示的代码；此代码使用 Boost API 确定某...

... a true tuple. For example the hashcode implementation in SimpleEntry just xors the codes of the elements, so <a,b> hashes to the same value as <b,a>. Tuple implementations often sort lexicographically, but SimpleEntry doesn't implement Comparable. So be careful out there... ...

...,8), %rbp addq $4, %rdx # Reuse "rax" for all the popcnts. xor %rax, %rax # Break the cross-iteration dependency by zeroing "rax". popcnt %r9, %rax add %rax, %rcx popcnt %r10, %rax add %rax, %rsi popcnt %r11, %rax add %rax, %r8 popcnt %rbp, ...

...and Y rows where there is no match to the other table, ie an exclusive-or (XOR) "cross" -- cross join or Cartesian product with each row of X matched to each row of Y The default value is join="all.y" which corresponds to the present default. The "all", "all.x" and "all.y" string values correspo...

... .text:01003687 push edi .text:01003688 xor edi, edi .text:0100368A cmp eax, dword_1005334 .text:01003690 mov dword_1005164, edi .text:01003696 jnz short loc_10036A4 .text:01003696 .text:01003698 ...

...一个很好的例子是文件处理，你需要获取一个文件句柄，从文件中读取数据，然后关闭文件句柄。 Without the with statement, one would write something along the lines of: 如果不用with语句，代码如下： file = open("/tmp/foo.txt") data = file.read() fil...

...光环，会失去对整个事情的全景认知和实事求是的判断，从而误入歧途。 举个例子，2006年的时候我看到过一个项目：当时频频爆出食品安全事故(现在似乎也没有好多少)，有人就结合当时方兴未艾的RFID技术做了一整套的生猪养...

...h of {2,2} etc - which can be common if just using an unweighted sum, or xor (^), etc. share | improve this answer | follow | ...

... Nice one. Also you could use "Boolean ^ 0". OR or XOR works. – F8ER Aug 22 '16 at 22:20 ...