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Conceptual inquiry about __main__ in Python

由 北城余情 提交于 2019-12-11 01:37:11
问题 I am currently working with Python and have been confused over the fact that functions are listed in __main__ . I have been looking over multiple python scripts to try to find a common theme as to what functions warrant a place in __main__ , but to no avail. Here I have a sample of my own code. firstfunction and anotherfunction are the only two functions in my code. def main(argv): firstinput="" secondinput="" if len(argv) < 3 or len(argv) > 3: print """"Please set to: metisfinal.main

HTML5 Pass-Through element causes Eclipse warning 'Unknown tag'

由 て烟熏妆下的殇ゞ 提交于 2019-12-10 23:05:33
问题 My JSF template.xhtml file looks something like: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html" xmlns:p="http://primefaces.org/ui" xmlns:jsf="http://xmlns.jcp.org/jsf"> <h:head> ... </h:head> <h:body> <header jsf:id="head"> ... </header> <nav jsf:id="nav"> ... </nav> <main jsf:id="main"> ... </main> <footer jsf:id="foot">

Calling main function from another function in C

由 别等时光非礼了梦想. 提交于 2019-12-10 20:57:13
问题 I have a main function that runs a few functions during initialization and then runs a while loop that waits for commands from the UART. When I see a specific command (let's say reset), I call a function that returns a value. I want to do the following things: Save the returned value Start the main function again with the returned value. The returned value is required during initialization of the functions in main. I am newbie in C and I am not able to figure out a way save variable value in

Reference to main thread in C#

由 情到浓时终转凉″ 提交于 2019-12-10 17:47:41
问题 How do I get a reference to the main thread from another thread in C# ? Why this is needed ? Take for example an assembly loaded to a console application. This assembly raises another thread that wants to wait (join) on the main thread of the console application. How will it do that ? I thought of this way: In visual studio 2010 you can inspect threads information while debugging. One of the columns in the threads window is the category that specifies if the thread is a worker thread or main

What's wrong with int main()?

由 懵懂的女人 提交于 2019-12-10 17:24:24
问题 I can't count the number of times I've seen C code out there and here on SO that defines main as int main() { ... When I compile it with gcc -ansi -pedantic -Wstrict-prototypes -Werror foo.c it errors out with foo.c:2: warning: function declaration isn't a prototype Why is it that int main(void) is required to make the error go away? 回答1: Because the definition int main() { /* ... */ } does not include a prototype; it doesn't specify the number or type(s) of the parameters. This: int main

Are there any other arguments that main() can accept?

由 …衆ロ難τιáo~ 提交于 2019-12-10 16:45:41
问题 I recently came across the following in my searches regarding environment variables in C: int main (int argc, char *argv[], *char *envp[]) I have searched around and can't find anything conclusive regarding my question. What are all of the available arguments that main() can accept? 回答1: The C99 and C11 draft standards allow for implementation defined set of parameters to main , these parameters are going to be specific to those systems( non-portable ). From section 5.1.2.2.1 : [...]or in

Java running a program at command prompt: could not find or load main class

由 允我心安 提交于 2019-12-10 15:59:36
问题 I am trying to learn how to compile and run using only command lines in Windows. Here is the tree of the directories starting from the root: D: ActivityOne - classes - com -wat -sampleapp -students StudentE.class StudentMasterList.class (Main) - src -com -wat -sampleapp -students StudentE.java StudentMasterList.java (Main) The thing is that I am now confused as to how to run the program. I tried two things, where both returned different errors. 1st try: java -classpath classes

why initializer list cannot be main's parameter? how to propose it?

由 大兔子大兔子 提交于 2019-12-10 14:49:01
问题 The valid C++ main signatures are the following: int main() int main(int argc, char *argv[]) int main(int argc, char **argv) But isn't allowed to declare main taking an initializer list: int main(std::initializer_list<char *> args) AFAIK the initializer list could be implemented as a pair of pointers or a pointer (this could be the argv parameter) plus a length (this could be deduced from the argc parameter), and its storage could be automatic, temporary, or static read-only memory depending

How to return a value from Python script as a Bash variable?

由 半腔热情 提交于 2019-12-10 13:51:52
问题 This is a summary of my code: # import whatever def createFolder(): #someCode var1=Gdrive.createFolder(name) return var1 def main(): #someCode var2=createFolder() return var2 if __name__ == "__main__": print main() One way in which I managed to return a value to a bash variable was printing what was returned from main() . Another way is just printing the variable in any place of the script . Is there any way to return it in a more pythonic way? The script is called this way: folder=$(python

What are the differences between: main(){}, int main(){} and int main(void){} [duplicate]

由 99封情书 提交于 2019-12-10 12:33:17
问题 This question already has answers here : What should main() return in C and C++? (17 answers) Why is the type of the main function in C and c++ left to the user to define? [duplicate] (6 answers) Closed 6 years ago . I am currently learning C and I have written many small programs. However, I have noticed that the main function could start as main() { //code } or int main() { //code return 0; } or int main(void) { //code return 0; } Which option should I use? Thanks! 回答1: Your first example
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