function

问题 In an answer to How to evaluate functions in GDB? I found the recipe to call a function outside of my program called floor from within GDB like this: (gdb) p floor $20 = {<text variable, no debug info>} 0x38e10197b0 <floor> (gdb) p ((double(*)(double))floor)(2.9999) $21 = 2 (gdb) p ((double(*)(double))floor)(2.000001) $22 = 2 (gdb) What do I need to do, short of a compiler upgrade which is not an option for me at the moment, in order for me to call the function in the same manner in which I

问题 In an answer to How to evaluate functions in GDB? I found the recipe to call a function outside of my program called floor from within GDB like this: (gdb) p floor $20 = {<text variable, no debug info>} 0x38e10197b0 <floor> (gdb) p ((double(*)(double))floor)(2.9999) $21 = 2 (gdb) p ((double(*)(double))floor)(2.000001) $22 = 2 (gdb) What do I need to do, short of a compiler upgrade which is not an option for me at the moment, in order for me to call the function in the same manner in which I

问题 In an answer to How to evaluate functions in GDB? I found the recipe to call a function outside of my program called floor from within GDB like this: (gdb) p floor $20 = {<text variable, no debug info>} 0x38e10197b0 <floor> (gdb) p ((double(*)(double))floor)(2.9999) $21 = 2 (gdb) p ((double(*)(double))floor)(2.000001) $22 = 2 (gdb) What do I need to do, short of a compiler upgrade which is not an option for me at the moment, in order for me to call the function in the same manner in which I

问题 E.g., instead of assert_eq!(add(2,3), 5); is there some way to call something like let params: [u32; 2] = [2 ,3]; assert_eq!(call!(&add, params), 5); I would find this functionality very useful for testing. E.g., if I want to write multiple tests for a function that takes a large number of params, I want to be able to reuse a dummy param object like this: #[cfg(test)] mod tests { const dummy: [u32; 5] = [0, 0, 0, 0, 0]; #[test] fn test_first_param() { let mut params = dummy; params[0] = 1;

问题 As you can see the code. I want to pass variable q from function home() into function search() . @app.route("/",methods=['GET','POST']) def home(): result = Mylist.query.all() return render_template('index.html',result=result) q = request.form.get("q") @app.route("/search.html") def search(): d = q var='%'+d+'%' result = Mylist.query.filter(Mylist.type.like(var) return render_template('search.html',result=result) 回答1: Where an index.html will contain: <form action="/search.html" method="get"

问题 I want to vectorize a function that relies on checking a condition and depending on whether this condition is TRUE or FALSE, return the outcome of one of two functions, respectively. The problem is that, when the condition is FALSE, the first function cannot be evaluated. Then, ifelse returns the correct values but it also produces a warning. I would like to produce a function that does not produce warnings. I have tried ifelse() , but it does not work. I was expecting that this command would

问题 I wrote the following code (Still wondering about its uses...) to default to user input if the parameter is not passed. #define _CRT_SECURE_NO_WARNINGS #include <iostream> unsigned getInput() { unsigned input; std::cin >> input; return input; } void foo(unsigned number = getInput()) { std::cout << number << "\n"; } int main() { foo(1); //prints 1 foo(); //defaults to user input return 0; } What I wanted to ask was, is there any way we can convert the getInput() function to a lambda? Something

问题 I wrote the following code (Still wondering about its uses...) to default to user input if the parameter is not passed. #define _CRT_SECURE_NO_WARNINGS #include <iostream> unsigned getInput() { unsigned input; std::cin >> input; return input; } void foo(unsigned number = getInput()) { std::cout << number << "\n"; } int main() { foo(1); //prints 1 foo(); //defaults to user input return 0; } What I wanted to ask was, is there any way we can convert the getInput() function to a lambda? Something

问题 this is my first time posting here. hopefully i can get nice advice:) i have learnt how to pass both **kwargs and *args into a function, and it worked pretty well. like the following: def market_prices(name, **kwargs): print("Hello! Welcome to "+name+" Market!") for fruit, price in kwargs.items(): price_list = " {} is NTD {} per piece.".format(fruit,price) print (price_list) market_prices('Wellcome',banana=8, apple=10) however in real case, i'd rather pre-defined a dictionary with lots of key

问题 This question already has answers here : iOS Launch screen code not running (2 answers) Closed 5 years ago . In iOS there is an LaunchScreen before you're app is ready. Can you add things to do (Code) to this? I want to execute a JSON request on LaunchScreen but have no idea where to put the code. Thanks In Advance, Kaaseter 回答1: As you wrote, LaunchScreen is there before your app is ready and it implies that you can't execute your code in this time. To achieve something similar, copy & paste