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What is the advantage of GCC's __builtin_expect in if else statements?
... 83 ec 08 sub $0x8,%rsp
4: 31 ff xor %edi,%edi
6: e8 00 00 00 00 callq b <main+0xb>
7: R_X86_64_PC32 time-0x4
b: 48 85 c0 test %rax,%rax
e: 75 0a jne ...
Calculate last day of month in JavaScript
...
It's okay, I noticed the selected answer is suggesting the same. This is the fastest and most reliable way and works regardless of the type of the calendar. For example if Date implemented something other than the Gregorian calendar it would still wo...
Logical operators for boolean indexing in Pandas
...s np.logical_and
or has np.logical_or
not has np.logical_not
numpy.logical_xor which has no Python equivalent but is a logical "exclusive or" operation
So, essentially, one should use (assuming df1 and df2 are pandas DataFrames):
np.logical_and(df1, df2)
np.logical_or(df1, df2)
np.logical_not(df...
Can I catch multiple Java exceptions in the same catch clause?
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XOR sign ( I ) is not the same as OR ( || ), A | B means either A or B but not both A || B means either A or B or both so as for exceptions it is either exceptionA or exceptionB but not both at the same time. this is why the...
What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
...k I see it. That seems to interact rather oddly with my definition of the Xor type… I'll have to think about that. Thanks!
– Antal Spector-Zabusky
Jun 3 '10 at 22:54
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iOS Ad Hoc 和 App Store 区别 - App应用开发 - 清泛IT社区，为创新赋能！
...开发者权限打开的手机才能扫描下载安装。
后者：直接发布AppStore审核，无需添加设备，需要特殊密码。不生产ipa，直接走发布审核流程。（编译窗中的Short name不建议为空）The following devices are either already present and were not modified...
Two-way encryption: I need to store passwords that can be retrieved
...s to store passwords in encrypted way, I would suggest you to use a simple XOR Cipher. The main problem with this algorithm is that it could be easily broken by frequency analysis. However as generally passwords are not made from long paragraphs of English text I don't think you should worry about i...
【软著】软件著作权证书申请流程及注意事项，模板分享 - App Inventor 2 中...
...信息、实名认证。。
填写填报完成，上传盖章的签章页即可：
3、审核难度不高，相比专利/发明专利来说，简单很多。只要你提供的材料及文档格式没问题，那就大概率能过。必须按照模板来写，参考模板见附件（源...
How does the Comma Operator work
...following syntax possible and meaningful:
keywords = "and", "or", "not", "xor";
Notice that due to operator precedence, the code is (intentionally!) identical to
(((keywords = "and"), "or"), "not"), "xor";
That is, the first operator called is keywords.operator =("and") which returns a proxy o...
简单谈谈软件配置管理 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...的历史，标识和定位产品独有的版本，并在产品的开发和发布阶段控制变化。通过有序管理和减少重复性工作，配置管理保证了生产的质量和效率。可以说不懂软件项目的配置管理，就不懂软件开发管理，不对软件项目进行配置...