dynamic

来源： https://stackoverflow.com/questions/63425201/call-a-function-dynamically-in-js-with-something-like-select-value-myfunctio

问题 I know there are a few similar questions already on SO (1, 2, 3) but unfortunately my limited knowledge of JS doesn't allow me to extrapolate the scenarios to my personal use case, hence this question. I have the following piece of code which allows me to dynamically attach to and call from an object some functions, which works fine (available on JsFiddle): JavaScript : $.extend(true, window, { "MyPlugin": { "dynamicFunction": dummy_function } }); function dummy_function() { } function real

问题 I know there are a few similar questions already on SO (1, 2, 3) but unfortunately my limited knowledge of JS doesn't allow me to extrapolate the scenarios to my personal use case, hence this question. I have the following piece of code which allows me to dynamically attach to and call from an object some functions, which works fine (available on JsFiddle): JavaScript : $.extend(true, window, { "MyPlugin": { "dynamicFunction": dummy_function } }); function dummy_function() { } function real

问题 I have a list of URLs for hundreds of images in a google spreadsheet. I want to create a google form that dynamically picks 50 of these images, displays them and asks a generic like it / hate it question, then submits this data along with the URL to a spreadsheet. Is there a way to do this dynamically? 回答1: AFAIK, you can create form using apps script using a function. But once created it becomes static. Only updating a form would make it as dynamic as possible. References: Dynamic selection

问题 I have a model in django app, with the following structure: class items(models.Model): name = models.CharField(max_length=50) location = models.CharField(max_length=3) I wanted to create a pivot table for the count of each location per each name/item, which I managed to do as per the following: queryset_res = items.objects.values('name')\ .annotate(NYC=Sum(Case(When(location='NYC', then=1),default=Value('0'),output_field=IntegerField())))\ .annotate(LND=Sum(Case(When(location='LND', then=1)

问题 I have a model in django app, with the following structure: class items(models.Model): name = models.CharField(max_length=50) location = models.CharField(max_length=3) I wanted to create a pivot table for the count of each location per each name/item, which I managed to do as per the following: queryset_res = items.objects.values('name')\ .annotate(NYC=Sum(Case(When(location='NYC', then=1),default=Value('0'),output_field=IntegerField())))\ .annotate(LND=Sum(Case(When(location='LND', then=1)

问题 Once I have allocated the array, how do I manually free it? Is pointer arithmetic possible in unsafe mode? Like in C++: double *A=new double[1000]; double *p=A; int i; for(i=0; i<1000; i++) { *p=(double)i; p++; } delete[] A; Is there any equivalent code in Rust? 回答1: Based on your question, I'd recommend reading the Rust Book if you haven't done so already. Idiomatic Rust will almost never involve manually freeing memory. As for the equivalent to a dynamic array, you want Vector. Unless you

问题 Once I have allocated the array, how do I manually free it? Is pointer arithmetic possible in unsafe mode? Like in C++: double *A=new double[1000]; double *p=A; int i; for(i=0; i<1000; i++) { *p=(double)i; p++; } delete[] A; Is there any equivalent code in Rust? 回答1: Based on your question, I'd recommend reading the Rust Book if you haven't done so already. Idiomatic Rust will almost never involve manually freeing memory. As for the equivalent to a dynamic array, you want Vector. Unless you

问题 Once I have allocated the array, how do I manually free it? Is pointer arithmetic possible in unsafe mode? Like in C++: double *A=new double[1000]; double *p=A; int i; for(i=0; i<1000; i++) { *p=(double)i; p++; } delete[] A; Is there any equivalent code in Rust? 回答1: Based on your question, I'd recommend reading the Rust Book if you haven't done so already. Idiomatic Rust will almost never involve manually freeing memory. As for the equivalent to a dynamic array, you want Vector. Unless you

问题 I would like to know how to get the properties of my dynamic type. This is the function to get the List, var result = _files.GetFileContent(reportId).Result; As example I get an object returned like this : When I open it, you can see the properties I have : The Idea is that I never know the properties. They can change over time. So I want a list which is filled with all the properties. So I can dynamically use them. How Can I get the properties from the first item (ChargesDelta_DIFF_5,