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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: When I run the following from a bash shell on my Mac: $ file /usr/bin/python I get the following three lines: /usr/bin/python (for architecture x86_64): Mach-O 64-bit executable x86_64 /usr/bin/python (for architecture i386): Mach-O executable i386 /usr/bin/python (for architecture ppc7400): Mach-O executable ppc this would seem to indicate that Python has been compiled for all three architectures or something like that? I believe, based on some errors I had while trying to setup MySQL, that the version I'm using is the 64-bit version. So

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I was reading the documentation for StringBuffer , in particular the reverse() method. That documentation mentions something about surrogate pairs . What is a surrogate pair in this context? And what are low and high surrogates? 回答1: The term "surrogate pair" refers to a means of encoding Unicode characters with high code-points in the UTF-16 encoding scheme. In the Unicode character encoding, characters are mapped to values between 0x0 and 0x10FFFF. Internally, Java uses the UTF-16 encoding scheme to store strings of Unicode text.

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a problem with our executable. I'm running this C++ 32-bit executable on my Win-7 64-bit development box that also has all those MS applications (Visual Studio 2008 + 2010, TFS, SDK, MS Office)... And its still running just fine. Now I got the client installation of the very same program and wwas asked to test it with a clean Win-7 installation. Thus i got I Win-7 64-bit VM Ware and updated it to Win-7 SP 1 (the very same version my developer box is tunning). But while on my developer box everything is fine the program does not work

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am getting this error while on of my .Net application are trying to make a connection to oracle database. The error says that This problem will occur when running in 64 bit mode with the 32 bit Oracle client components installed. . But I have made sure many times that the client installed in x64 bit not 32 . Date Time: 6/8/2014 10:57:55 AM: System.InvalidOperationException: Attempt to load Oracle client libraries threw BadImageFormatException. This problem will occur when running in 64 bit mode with the 32 bit Oracle client components

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I recently picked up a copy of Applied Cryptography by Bruce Schneier and it's been a good read. I now understand how several algorithms outlined in the book work, and I'd like to start implementing a few of them in C. One thing that many of the algorithms have in common is dividing an x-bit key, into several smaller y-bit keys. For example, Blowfish's key, X, is 64-bits, but you are required to break it up into two 32-bit halves; Xl and Xr. This is where I'm getting stuck. I'm fairly decent with C, but I'm not the strongest when it comes to

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: In my C# source code I may have declared integers as: int i = 5; or Int32 i = 5; In the currently prevalent 32-bit world they are equivalent. However, as we move into a 64-bit world, am I correct in saying that the following will become the same? int i = 5; Int64 i = 5; 回答1: No. The C# specification rigidly defines that int is an alias for System.Int32 with exactly 32 bits. Changing this would be a major breaking change. 回答2: The int keyword in C# is defined as an alias for the System.Int32 type and this is (judging by the name) meant to be

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: my image processing project works with grayscale images. I have ARM Cortex-A8 processor platform. I want to make use of the NEON. I have a grayscale image( consider the example below) and in my alogorithm, I have to add only the columns. How can I load four 8-bit pixel values in parallel, which are uint8_t , as four uint32_t into one of the 128-bit NEON registers? What intrinsic do I have to use to do this? I mean: I must load them as 32 bits because if you look carefully, the moment I do 255 + 255 is 512, which can't be held in a 8-bit

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: It is an interview question: Given an input file with four billion integers, provide an algorithm to generate an integer which is not contained in the file. Assume you have 1 GB memory. Follow up with what you would do if you have only 10 MB of memory. My analysis: The size of the file is 4×10 9 ×4 bytes = 16 GB. We can do external sorting, thus we get to know the range of the integers. My question is what is the best way to detect the missing integer in the sorted big integer sets? My understanding(after reading all answers): Assuming we

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am using DllImport in my solution. My problem is that I have two versions of the same DLL one built for 32 bit and another for 64 bit. They both expose the same functions with identical names and identical signatures. My problem is that I have to use two static methods which expose these and then at run time use IntPtr size to determine the correct one to invoke. private static class Ccf_32 { [ DllImport ( myDllName32 )] public static extern int func1 (); } private static class Ccf_64 { [ DllImport ( myDllName64 )] public static

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I can't find anywhere in the C standard where this is specified. For example, in struct { signed int x:1; } foo; is foo.x an lvalue of type int , or something else? It seems unnatural for it to be an lvalue of type int since you cannot store any value of type int in it, only 0 or -1, but I can't find any language that would assign it a different type. Of course, used in most expressions, it would get promoted to int anyway, but the actual type makes a difference in C11 with _Generic , and I can't find any language in the standard about how