Question

使用来自其他变量的元素初始化数组变量的正确语法是什么？我尝试过：

#include <iostream>

using namespace std;

namespace nmp1
{
  float foo = 100;
}

namespace nmp2
{
  float foo = -22;    
}

int main(int, char**) {
  using namespace nmp1;
  using nmp2::foo;

  cout << foo << endl;
}

还有一个"Initialize_variable_AllEventCounts": { "inputs": { "variables": [ { "name": "AllEventCounts", "type": "Array", "value": "[@{variables('EmailConfirmedFailureEventCount')}, @{variables('EmailConfirmedSuccessEventCount')}, @{variables('UserCreatedEventCount')}, @{variables('UserLoginFailureEventCount')}, @{variables('UserLoginSuccessEventCount')}, @{variables('UserLogoutSuccessEventCount')}]" } ] }, "runAfter": { "Set_variable_EmailConfirmedFailureEventCount": [ "Succeeded" ], "Set_variable_EmailConfirmedSuccess": [ "Succeeded" ], "Set_variable_UserCreatedEventCount": [ "Succeeded" ], "Set_variable_UserLoginFailureEventCount": [ "Succeeded" ], "Set_variable_UserLoginSuccessEventCount": [ "Succeeded" ], "Set_variable_UserLogoutSuccessEventCount": [ "Succeeded" ] }, "type": "InitializeVariable" },表达式没有提供我期望的结果：

createArray()

更新：上面的createArray（）语法接近正确。正确的语法如下：

"value": "@{createArray(variables('EmailConfirmedFailureEventCount'), variables('EmailConfirmedSuccessEventCount'), variables('UserCreatedEventCount'), variables('UserLoginFailureEventCount'), variables('UserLoginSuccessEventCount'), variables('UserLogoutSuccessEventCount'))}"

Answer 1

有一个Union action，您可以用它来组合多个数组。

"Initialize_variable_4": {
            "inputs": {
                "variables": [
                    {
                        "name": "array4",
                        "type": "Array",
                        "value": "@union(variables('array1'),variables('array2'),variables('array3'))"
                    }
                ]
            },
            "runAfter": {
                "Initialize_variable_3": [
                    "Succeeded"
                ]
            },
            "type": "InitializeVariable"
        }

Answer 2

答案很简单。 createArray（）表达式按预期工作。在我较大的Logic App中一定是其他语法错误，使我觉得数组初始化中存在语法错误。

要回答我自己的问题，我创建了一个空的Logic App来测试这件事：

该示例Logic App的完整代码如下：

{
    "definition": {
        "$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
        "actions": {
            "Initialize_Array1_=_[Var1,_Var2]": {
                "inputs": {
                    "variables": [
                        {
                            "name": "Array1",
                            "type": "Array",
                            "value": "@createArray(variables('Var1'), variables('Var2'))"
                        }
                    ]
                },
                "runAfter": {
                    "Initialize_Var2_=_3": [
                        "Succeeded"
                    ]
                },
                "type": "InitializeVariable"
            },
            "Initialize_Var1_=_2": {
                "inputs": {
                    "variables": [
                        {
                            "name": "Var1",
                            "type": "Integer",
                            "value": 2
                        }
                    ]
                },
                "runAfter": {},
                "type": "InitializeVariable"
            },
            "Initialize_Var2_=_3": {
                "inputs": {
                    "variables": [
                        {
                            "name": "Var2",
                            "type": "Integer",
                            "value": 3
                        }
                    ]
                },
                "runAfter": {
                    "Initialize_Var1_=_2": [
                        "Succeeded"
                    ]
                },
                "type": "InitializeVariable"
            }
        },
        "contentVersion": "1.0.0.0",
        "outputs": {},
        "parameters": {},
        "triggers": {
            "Recurrence": {
                "recurrence": {
                    "frequency": "Minute",
                    "interval": 3
                },
                "type": "Recurrence"
            }
        }
    }
}

最后是成功运行的输出：

Logic App从其他变量初始化数组

2 个答案: