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How can I ensure that a division of integers is always rounded up?
...ositive by checking that the signs of both integers are identical. Integer xor operator '^' on the two values will result in a 0 sign-bit when this is the case, meaning a non-negative result, so the check (a ^ b) >= 0 determines that the result should have been positive before rounding. Also note...
Move all files except one
...iano Very cool command! Are there more mathematical operations like OR and XOR? I assume a pipe is for AND.
– Léo Léopold Hertz 준영
Mar 22 '09 at 3:39
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Real world use cases of bitwise operators [closed]
...t into every area where these operators are used in graphics programming. XOR (or ^) is particularly interesting here because applying the same input a second time will undo the first. Older GUIs used to rely on this for selection highlighting and other overlays, in order to eliminate the need for...
How to get the Power of some Integer in Swift language?
...\(2 ^^ 3)") // Prints 2³ = 8
I used two carets so you can still use the XOR operator.
Update for Swift 3
In Swift 3 the "magic number" precedence is replaced by precedencegroups:
precedencegroup PowerPrecedence { higherThan: MultiplicationPrecedence }
infix operator ^^ : PowerPrecedence
func ^...
记一次LVS/Nginx环境下的访问控制 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...用户请求经由 LVS 转发给 RS 服务器的时候，其来源 IP 会从用户 IP 改成 LVS 内网 IP，目标 IP 会从 LVS 的 VIP 改成 RS 服务器的 IP；当 RS 服务器生成响应数据经由 LVS 返回给用户的时候，其来源 IP 会从 RS 服务器 IP 改成 LVS 的 VIP，目...
What does numpy.random.seed(0) do?
...non-uniform distributions for some few first iterations because of the way xor works, but this depends on the algorithm, and is beyond my current worries and the scope of this question.
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impr...
plupload图片上传插件的使用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...小限制的时候，可以分多次请求发给服务器，如果不需要从设置中移出
drop_element：当浏览器支持拖拽的情况下，能够文件拖放到你想要的容器ID里
file_data_name：设置上传字段的名称。默认情况下被设置为文件。（我试验了没找...
“堵车险”1天最高可补20元 互联网改写保险业 - 资讯 - 清泛网 - 专注C/C++...
...堵车多付出的汽油钱就是10.2元，每月多付出300多元。
“从用户角度来看，这款产品虽然不能从根本上解决堵车问题，但补贴了用户在堵车时的油费消耗，期望达到”堵车不堵心“的类保险功效。”上海保橙网络科技CEO、OK车险...
How do I decode a base64 encoded string?
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The m000493 method seems to perform some kind of XOR encryption. This means that the same method can be used for both encrypting and decrypting the text. All you have to do is reverse m0001cd:
string p0 = Encoding.UTF8.GetString(Convert.FromBase64String("OBFZDT..."));
str...
__FILE__, __LINE__, and __FUNCTION__ usage in C++
... It's possible with constexpr that uses a lookup table or bitwise XOR, etc. to obfuscate any string literals in your binary. There are various examples out there if you search. Of course obfuscation is just obfuscation and not security, but if you don't want to make your files and functions...