variables

问题 I defined a YAML build-pipeline in azure: variables: test: '${{ variables.Environment }}' pool: vmImage: 'ubuntu-latest' steps: - script: | echo $(test) displayName: 'Show test' I queue that pipeline with the Environment variable defined as 'abc': I expect it to echo abc but instead abc is replaced with nothing - variables.Environment seems to be undefined. Later on I want to load a different Variable Group depending on the Environment variable, which is why I do not echo $(Environment)

问题 I defined a YAML build-pipeline in azure: variables: test: '${{ variables.Environment }}' pool: vmImage: 'ubuntu-latest' steps: - script: | echo $(test) displayName: 'Show test' I queue that pipeline with the Environment variable defined as 'abc': I expect it to echo abc but instead abc is replaced with nothing - variables.Environment seems to be undefined. Later on I want to load a different Variable Group depending on the Environment variable, which is why I do not echo $(Environment)

问题 I can not update my angular service variable value. I have two non-related components, and i want to send updated object from one to other one , using service . But I can't update object in service. First component : import { SoruService } from '../soru.service'; import { SoruModel, SecenekModel } from '../soruModel'; @Component({ selector: 'app-first', templateUrl: './first.component.html', styleUrls: ['./first.component.scss'], providers: [SoruService] }) export class FirstComponent

问题 I have a custom marker image and want to use a variable for the opacity of the image. I doing the following and gettin this error "Value for opacity cannot be cast from ReadableNativeMap to double" var status=1; <MapView.Marker key={marker.latitude} coordinate={{ latitude: marker.latitude, longitude: marker.longitude }} onPress={() => this.props.Quiz2(marker.latitude, marker.longitude)} > <View><Image source={require('../assets/icons/quiz.png')} style={{ width: 40, height: 40,opacity:status}}

问题 In bash, if I define a variable inside a script (say, set_var.sh ), I can choose whether those definitions persist after "running" the script. This will depend on how I "run" the script, the options being: sh set_var.sh (variables do not persist) ./set_var.sh (variables do not persist, same as point 1) source set_var.sh (variables persist) This is irrespective from the variable being exported to the environment or not in set_var.sh . Can the same as items 1 and 3 above be achieved with

问题 In bash, if I define a variable inside a script (say, set_var.sh ), I can choose whether those definitions persist after "running" the script. This will depend on how I "run" the script, the options being: sh set_var.sh (variables do not persist) ./set_var.sh (variables do not persist, same as point 1) source set_var.sh (variables persist) This is irrespective from the variable being exported to the environment or not in set_var.sh . Can the same as items 1 and 3 above be achieved with

问题 I am quite confused with the code below. def a(x): print(x) if x > 0: a(x - 1) print(x) #I am confused with this print statement a(5) The above code outputs: 5 4 3 2 1 0 0 1 2 3 4 5 Up till the 0 I understand how it prints, but then why it prints in ascending order . Variable x is changing so what I thought the output would be is the last assigned value of x that is 0 . My predicted output: 5 4 3 2 1 0 0 0 0 0 0 0 So how does it track the value of x...? Can someone explain in brief what

问题 This is an algorithm in python to validate a day entry. I want to know what does that mean exactly the expression "if day" (semantics). I only know the effect of "if" on boolean expressions not on variables like integers or arrays (I've seen some). Does anyone have an explanation? def valid_day(day): if day and day.isdigit():#if day day = int(day) if day > 0 and day <= 31: return day 回答1: in python, writing if var: has the same effect as writing if bool(var): (where bool is the built-in bool

问题 This is an algorithm in python to validate a day entry. I want to know what does that mean exactly the expression "if day" (semantics). I only know the effect of "if" on boolean expressions not on variables like integers or arrays (I've seen some). Does anyone have an explanation? def valid_day(day): if day and day.isdigit():#if day day = int(day) if day > 0 and day <= 31: return day 回答1: in python, writing if var: has the same effect as writing if bool(var): (where bool is the built-in bool

问题 I’m trying to get the value property from my <input> field so I can later use it to fetch data from a specific API URL. The problem is that my <input> value is always empty no matter what I type in it. I tried to use document.querySelector() and document.getElementById() ; both yield the same result. const searchBtn = document.querySelector("#searchBtn"); //const inpuValue = document.querySelector("#inputField").value; const inputValue = (document.getElementById("inputField")).value; const