arguments

flutter passing multiple data with getx

由 生来就可爱ヽ(ⅴ＜●) 提交于 2020-12-27 06:35:46
问题 I want to Pass multiple data from one screen to another screen with Get package. Get.to(Second(), arguments: ["First data", "Second data"]); 回答1: Step: 1 : Sending data Get.to(Second(), arguments: ["First data", "Second data"]); Step: 2 : Get data From first screen var data = Get.arguments; 回答2: I found this solution. First screen Get.to(Second(), arguments: ["First data", "Second data"]); Second screen Declare variable (list) var one = Get.arguments; Set data Column( mainAxisAlignment:

Why does *args argument unpacking give a tuple?

由 故事扮演 提交于 2020-12-25 04:30:47
问题 In python, it is possible to define a function taking an arbitrary number of positional arguments like so: def f(*args): print(args) f(1, 2, 3) # (1, 2, 3) When called as f(a, b, c) , all positional arguments are put together into a tuple . This behavior is described in python 2 and 3 documentation, but I haven't found a PEP to it. PEP 3132, introducing extended iterable unpacking ( first, *middle, last = seqence ) states under "Acceptance" that Make the starred target a tuple instead of a

How to decide when to pass parameter & when not

由 ぐ巨炮叔叔 提交于 2020-12-14 06:35:49
问题 Can anyone tell me how do we know when we need to pass the parameter & when not? For example in below code click={() => this.deletePersonHandler(index) I am not passing any parameter & directly giving the index argument still the code is working. On the other hand changed={(event) => this.nameChangedHandler(event, person.id) I have to pass event parameter to make the code work. Here I am getting confuse how to decide when to pass parameter & when not. import './App.css'; import Person from '.

tornado post request: missing argument

由 為{幸葍}努か 提交于 2020-12-13 04:06:12
问题 I'm using tornado to build a web server and now I'm creating a login module. Here is the code: <body> <form id="uploadForm"> <div class="form-group"> <label for="exampleInputEmail1">Email address</label> <input name="name" type="email" class="form-control" id="exampleInputEmail1" placeholder="Email"> </div> <div class="form-group"> <label for="exampleInputPassword1">Password</label> <input name="password" type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">

C++: How to partially deduce template arguments from make_shared

由 拟墨画扇 提交于 2020-12-12 02:53:40
问题 In order to circumvent the restriction on partially supplied explicit template arguments, I embed the struct from which I want to deduce the class template parameters ( Internal ) into a second struct ( Container ). I would like to enable the user of the code to create e.g. shared pointers of the resulting type. By writing my own create function within the struct, this works just fine. #include <memory> /// Container that is used in order to partially specify template arguments template <int

C++: How to partially deduce template arguments from make_shared

由 孤人 提交于 2020-12-12 02:53:16
问题 In order to circumvent the restriction on partially supplied explicit template arguments, I embed the struct from which I want to deduce the class template parameters ( Internal ) into a second struct ( Container ). I would like to enable the user of the code to create e.g. shared pointers of the resulting type. By writing my own create function within the struct, this works just fine. #include <memory> /// Container that is used in order to partially specify template arguments template <int

Passing arguments to a perl package while using it

由 浪子不回头ぞ 提交于 2020-12-05 08:40:04
问题 How to pass some arguments while using a package, for example: use Test::More tests => 21; I wasn't able to find any valuable documentation about this featue. Are there any pros and cons of passing such arguments? 回答1: use My::Module LIST does two things: 1) It requires My::Module ; and 2) Invokes My::Module->import(LIST). Therefore, you can write your module's import routine to treat the list of arguments passed any which way you want. This becomes even easier if you are indeed writing an

Passing arguments to a perl package while using it

由 青春壹個敷衍的年華 提交于 2020-12-05 08:37:29
问题 How to pass some arguments while using a package, for example: use Test::More tests => 21; I wasn't able to find any valuable documentation about this featue. Are there any pros and cons of passing such arguments? 回答1: use My::Module LIST does two things: 1) It requires My::Module ; and 2) Invokes My::Module->import(LIST). Therefore, you can write your module's import routine to treat the list of arguments passed any which way you want. This becomes even easier if you are indeed writing an

Python function that takes one compulsory argument from two choices

由 痞子三分冷 提交于 2020-11-29 07:27:44
问题 I have a function: def delete(title=None, pageid=None): # Deletes the page given, either by its title or ID ... pass However, my intention is for the function to take only one argument (either title OR pageid ). For example, delete(title="MyPage") or delete(pageid=53342) are valid, while delete(title="MyPage", pageid=53342) , is not. Zero arguments can not be passed. How would I go about doing this? 回答1: There is no Python syntax that'll let you define exclusive-or arguments, no. You'd have
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