arguments

Xamarin Forms - Pass Scope-Injected service from tabbedpageviewmodel to the viewmodels of the pages

由 做~自己de王妃 提交于 2020-05-24 05:07:00
问题 In my xamarin forms application I have a tabbedpage with behind it a viewmodel. This viewmodel behind injects a service with dependency injection. That service is scoped. It should be scoped for the tabbedpageviewmodel. But the tabs should also make use of that scoped service. How can I achieve this? Should I pass the service to the tabbedpages-viewmodels? Singleton is not an option, because I work with notifications, the tabbedpageviewmodel can accur multiple times in the navigationstack,

VBA compile error if Instr function used with named parameter and return value assigned to variable

由 你离开我真会死。 提交于 2020-05-14 18:37:06
问题 Background : In VBA, ' InStrRev ' function can be called without or with named parameters. 'Call without named parameters Call InStrRev("AB", "B") 'No compiler error i = InStrRev("AB", "B") 'No compiler error 'Call with named parameters Call InStrRev(StringCheck:="AB", StringMatch:="B") 'No compiler error i = InStrRev(StringCheck:="AB", StringMatch:="B") 'No compiler error Concern : In VBA, the compiler returns "Expected: list separator" error if ' InStr ' function : Is called with named

In bash, how do I join N parameters together as a space separated string

由 泄露秘密 提交于 2020-05-08 01:41:11
问题 I'm trying to write a function that takes n parameters and joins them into a string. In Perl it would be my $string = join(' ', @ARGV); but in bash I don't know how to do it function() { ?? } 回答1: Check the bash man page for the entry for '*' under Special Parameters. join () { echo "$*" } 回答2: For the immediate question, chepner's answer ( "$*" ) is easiest, but as an example of how to do it accessing each argument in turn: func(){ str= for i in "$@"; do str="$str $i" done echo ${str# } }

In bash, how do I join N parameters together as a space separated string

由 天大地大妈咪最大 提交于 2020-05-08 01:40:01
问题 I'm trying to write a function that takes n parameters and joins them into a string. In Perl it would be my $string = join(' ', @ARGV); but in bash I don't know how to do it function() { ?? } 回答1: Check the bash man page for the entry for '*' under Special Parameters. join () { echo "$*" } 回答2: For the immediate question, chepner's answer ( "$*" ) is easiest, but as an example of how to do it accessing each argument in turn: func(){ str= for i in "$@"; do str="$str $i" done echo ${str# } }

How to activate only options when we use click.group()

由 [亡魂溺海] 提交于 2020-04-16 02:57:48
问题 I'm currently working to create Command line arguments with click. I almost done the research, and everything is working fine. The issue is I want to use the only option while working with the click.group() other than sub commands. Lets say myCommand --version this should print my application's version but it's raising error saying Error: Missing command. My code is: import sys import os as _os import click import logging from myApp import __version__ @click.group() @click.option('--version',

Weak method argument semantics

由 ╄→尐↘猪︶ㄣ 提交于 2020-04-10 03:14:11
问题 Is there any way to specify that a particular method argument has weak semantics? To elaborate, this is an Objective-C sample code that works as expected: - (void)runTest { __block NSObject *object = [NSObject new]; dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ [self myMethod:object]; }); // to make sure it happens after `myMethod:` call dispatch_async(dispatch_get_main_queue(), ^{ object = nil; }); } - (void)myMethod:(__weak id)arg0 { NSLog(@"%@", arg0); //

Iterate over *args?

由 守給你的承諾、 提交于 2020-04-04 06:49:32
问题 I have a script I'm working on where I need to accept multiple arguments and then iterate over them to perform actions. I started down the path of defining a function and using *args. So far I have something like below: def userInput(ItemA, ItemB, *args): THIS = ItemA THAT = ItemB MORE = *args What I'm trying to do is get the arguments from *args into a list that I can iterate over. I've looked at other questions on StackOverflow as well as on Google but I can't seem to find an answer to what

Iterate over *args?

由 杀马特。学长 韩版系。学妹 提交于 2020-04-04 06:49:07
问题 I have a script I'm working on where I need to accept multiple arguments and then iterate over them to perform actions. I started down the path of defining a function and using *args. So far I have something like below: def userInput(ItemA, ItemB, *args): THIS = ItemA THAT = ItemB MORE = *args What I'm trying to do is get the arguments from *args into a list that I can iterate over. I've looked at other questions on StackOverflow as well as on Google but I can't seem to find an answer to what

How to Autowire a Component which is having constructor with arguments in SpringBoot Application

由 邮差的信 提交于 2020-03-20 14:01:25
问题 I have a class having Autowired Constructor. now when i am autowiring this class object in my class. how do i pass arguments for constructor?? example code: Class having Autowired Constructor: @Component public class Transformer { private String dataSource; @Autowired public Transformer(String dataSource) { this.dataSource = dataSource; } } Class using autowire for component having constructor with arguments: @Component public class TransformerUser { private String dataSource; @Autowired

js apply,call,arguments,callee,caller详解

由 ↘锁芯ラ 提交于 2020-03-02 08:35:26
apply与 call 主要解决一下几个问题: 1.apply和call的区别在哪里 2.什么情况下用apply,什么情况下用call 3.apply的其他巧妙用法（一般在什么情况下可以使用apply） apply:方法能劫持另外一个对象的方法，继承另外一个对象的属性. Function.apply(obj,args)方法能接收两个参数 obj：这个对象将代替Function类里this对象 args：这个是数组，它将作为参数传给Function（args-->arguments） call:和apply的意思一样,只不过是参数列表不一样. Function.call(obj,[param1[,param2[,…[,paramN]]]]) obj：这个对象将代替Function类里this对象 params：这个是一个参数列表 1.apply示例: <script type="text/javascript"> /*定义一个人类*/ function Person(name,age) { this.name=name; this.age=age; } /*定义一个学生类*/ functionStudent(name,age,grade) { Person.apply(this,arguments); this.grade=grade; } //创建一个学生类 var student
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