object

问题 This question already has answers here : How to aggregate objects properties? (6 answers) Closed 4 months ago . So I was working on the some column merging and filtering,but I am having trouble calculating 2 object keys (columns) from an array of objects and then mapping that result to an object key to a new array Example: var foodRevenue = [{ "Month": "2011-01", "week1_Revenue": "100.00", "week2_Revenue": "300.51", "Week3_Reenue": "200.09", "Month1_TotalRevenue": "0" }]; I want to calculate

问题 This question already has answers here : How to aggregate objects properties? (6 answers) Closed 4 months ago . So I was working on the some column merging and filtering,but I am having trouble calculating 2 object keys (columns) from an array of objects and then mapping that result to an object key to a new array Example: var foodRevenue = [{ "Month": "2011-01", "week1_Revenue": "100.00", "week2_Revenue": "300.51", "Week3_Reenue": "200.09", "Month1_TotalRevenue": "0" }]; I want to calculate

问题 I'm currently writing a class factory in TypeScript, and would like to return a type as the output of a function. Although TypeScript handles types as an input--i.e. generics--beautifully, I've not yet found a way to handle types as an output. This StackOverflow question on class factories offered a particularly helpful solution, but did not fully answer my question. Given the below structure, function factory(someVar: any) { return class A { // Do something with someVar that makes this class

问题 I'm currently writing a class factory in TypeScript, and would like to return a type as the output of a function. Although TypeScript handles types as an input--i.e. generics--beautifully, I've not yet found a way to handle types as an output. This StackOverflow question on class factories offered a particularly helpful solution, but did not fully answer my question. Given the below structure, function factory(someVar: any) { return class A { // Do something with someVar that makes this class

问题 H ere is my code: An ArrayList of ArrayList that returns a float: public ArrayList walls=new ArrayList(); public void Start() { walls[0] = ReturnInArrayList(279,275,0,0,90); walls[1] = ReturnInArrayList(62,275,0,0,0); walls[2] = ReturnInArrayList(62,275,62,0,90); walls[3] = ReturnInArrayList(217,275,62,-62,0); walls[4] = ReturnInArrayList(62,275,279,0,90); walls[5] = ReturnInArrayList(41,275,279,0,0); walls[6] = ReturnInArrayList(279,275,320,0,9); walls[7] = ReturnInArrayList(320,275,0,-279,0

问题 H ere is my code: An ArrayList of ArrayList that returns a float: public ArrayList walls=new ArrayList(); public void Start() { walls[0] = ReturnInArrayList(279,275,0,0,90); walls[1] = ReturnInArrayList(62,275,0,0,0); walls[2] = ReturnInArrayList(62,275,62,0,90); walls[3] = ReturnInArrayList(217,275,62,-62,0); walls[4] = ReturnInArrayList(62,275,279,0,90); walls[5] = ReturnInArrayList(41,275,279,0,0); walls[6] = ReturnInArrayList(279,275,320,0,9); walls[7] = ReturnInArrayList(320,275,0,-279,0

问题 The class java.util.Objects contains the deepEquals(Object a, Object b) method that can be used to compare objects of any type (including arrays and null references), but doesn't contain a similar deepToString(Object o) . This is disappointing. (By the way, the private constructor of this class contains the message "No java.util.Objects instances for you!" that explains to some extent why this class is so mean). That being the case, I've tried to implement the method myself: public static

问题 I'm trying to send my javascript object to PHP via JSON.stringify() Javascript: $('#save').on('click touch', function(){ obj = { "1" : { "1" : "hey", "2" : "hay" }, "2" : { "1" : "hey", "2" : "hay" } } var json = JSON.stringify( obj ); console.log(json) $.ajax({ type: 'POST', url: 'ajax.php', success: function(data) { alert(data); $("p").text(data); } }); }); ajax.php: <?php $obj = json_decode($json); echo $obj; ?> But this code returns an error saying that $json is not defined. I have no

问题 I'm trying to send my javascript object to PHP via JSON.stringify() Javascript: $('#save').on('click touch', function(){ obj = { "1" : { "1" : "hey", "2" : "hay" }, "2" : { "1" : "hey", "2" : "hay" } } var json = JSON.stringify( obj ); console.log(json) $.ajax({ type: 'POST', url: 'ajax.php', success: function(data) { alert(data); $("p").text(data); } }); }); ajax.php: <?php $obj = json_decode($json); echo $obj; ?> But this code returns an error saying that $json is not defined. I have no

问题 I have a collection of objects called the response and I am creating another variable called object that's an empty object and creating object.array and set it to the response variable. I would think I am creating a new scope. However, if I set the age inside object.array as null, this sets the age in my response array to null . Why is this happening and how can I create a duplicate variable that doesn't affect the original? I need to keep the above variables as is. So object needs to be an