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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: What does "bucket entries" mean in the context of a hashtable? 回答1: A bucket is simply a fast-access location (like an array index) that is the the result of the hash function. The idea with hashing is to turn a complex input value into a different value which can be used to rapidly extract or store data. Consider the following hash function for mapping people's names into street addresses. First take the lower-cased initials from the first and last name and turn them both into numeric values (0 through 25, from 'a' through 'z'). Multiply

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 encountered some code that gcc would not compile without this arg. I checked the gcc man page, but did not find this specific option. I did find XOPEN_SOURCE , but there was little explanation of what it does. Can someone please elaborate? I know -D_XOPEN_SOURCE can be set to different values, such 400 , 600 , but what do those do? 回答1: When you do #define _XOPEN_SOURCE or cc -D_XOPEN_SOURCE= it tells your compiler to include definitions for some extra functions that are defined in the X/Open and POSIX standards. This will give

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 OS is Fedora 17. Recently, kernel tainted warning "kernel bug at kernel/auditsc.c:1772!-abrt" occurs: This problem should not be reported (it is likely a known problem). A kernel problem occurred, but your kernel has been tainted (flags:GD). Kernel maintainers are unable to diagnose tainted reports. Then, I get the following: # cat /proc/sys/kernel/tainted 128 # dmesg | grep -i taint [ 8306.955523] Pid: 4511, comm: chrome Tainted: G D 3.9.10-100.fc17.i686.PAE #1 Dell Inc. [ 8307.366310] Pid: 4571, comm: chrome Tainted: G D 3.9.10-100.fc17

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've a hard time understanding signs I see in my text editor Vim. I see signs like ^@ and ^A and ^M and ^F . What does this mean? Is there any structured list of these signs and their meaning? Trying to google it is a dead end since Google will not search for "^@". 回答1: Those signs are control characters. ^@ is a NUL or the 0 character, ^M is CR or character 13, etc. What this notation is in effect saying is that you're looking at just the lower 5 bits of an @ , M or whatever. An ASCII chart, e.g. this will help you sort most of them out.

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: Here's a simple question. What's the meaning of the leading letter " s " in the sin_family, sin_port, sin_addr and sin_zero? struct sockaddr_in { short int sin_family; // Address family, AF_INET unsigned short int sin_port; // Port number struct in_addr sin_addr; // Internet address unsigned char sin_zero[8]; // Same size as struct sockaddr }; Thanks. 回答1: This comes from Berkeley, back when LSD was still legal. So very obvious in their naming choices :/ All kidding aside, this dates back to very early K&R C where structure members didn't

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: Under the target folder in IntelliJ for a Java project I created, I have a few java source files in the package. Beside each file the 'J' icon has a red circle with a line through it. What does that mean? How do I fix it? 回答1: You need to specify the source dir File > Project Structure > Modules click the directory and click the Sources button It's weird because usually it's done automatically. Maybe it's better if you recreate the project again. 回答2: If it is a maven project right click on the pom.xml Add As Maven Project Thanks

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: What does the word "literal" mean when used in context such as literal strings and literal values? What is the difference between a literal value and a value? 回答1: A literal is "any notation for representing a value within source code" ( wikipedia ) (Contrast this with identifiers , which refer to a value in memory.) Examples: "hey" (a string) false (a boolean) 3.14 (a real number) [1,2,3] (a list of numbers) (x) => x*x (a function) /^1?$|^(11+?)\1+$/ (a regexp) Some things that are not literals: std::cout (an identifier) foo = 0; (a

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 question about the understanding of the BatchNorm (BN later on). I have a convnet working nicely, I was writing tests to check for shape and outputs range. And I noticed that when I set the batch_size = 1, my model outputs zeros (logits and activations). I prototyped the simplest convnet with BN: Input => Conv + ReLU => BN => Conv + ReLU => BN => Conv Layer + Tanh The model is initialized with xavier initialization . I guess that BN during training do some calculations that require Batch_size > 1. I have found an issue in PyTorch

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: Here's the explanatory code. The language is Java and the code uses Android. fg . setTextSize ( height * 0.50f ); // or @Override protected void onSizeChanged ( int w , int h , int oldw , int oldh ) { super . onSizeChanged ( w , h , oldw , oldh ); sWidth = w / 3f ; // What does the suffix 'f' mean? 回答1: It indicates a float literal. 回答2: It indicates 3 is float not integer in other case 0.50 is float not double. Just like in any other java program. 回答3: float ;) it's a 3 that is a float, not an int 回答4: It's a float, not a double.

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: Possible Duplicate: What does “static” mean in a C program? What does the static keyword mean in C ? I'm using ANSI-C. I've seen in several code examples, they use the static keyword in front of variables and in front of functions. What is the purpose in case of using with a variable? And what is the purpose in case of using with a function? 回答1: Just as a brief answer, there are two usages for the static keyword when defining variables: 1- Variables defined in the file scope with static keyword, i.e. defined outside functions will be