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问题 I've done alot of research on this and found a number of help sites but still can't understand why this sometimes doesn't work. I'm trying to access a sharepoint site (to which there are no restrictions for me) and extract all the files in a folder within that site. Sometimes my Path works and it does it, other times it does not. I have a feeling it works if I've gone into the sharepoint site on my browser before but can't confirm that (because I just tried it again now and it doesnt work

问题 I have encountered such a simple challenge, and yet don't know how to do this properly. library(tibble) library(dplyr) # I have this single-cell dataframe tibble::tribble(~red, "apple") ## # A tibble: 1 x 1 ## red ## <chr> ## 1 apple But being red is a property of the variable fruit , which apple is one observation of. Therefore, I want my data to look like: # Desired Output: ## # A tibble: 1 x 2 ## fruit red ## <chr> <lgl> ## 1 apple TRUE So I tried a clunky method, which seems not best

问题 I need to inherit a collection of items of the current type, like this class A { // some properties... public ICollection<A> Children; } class B: A { // other properties } This mostly works as expected. The problem is I can do something like this class C: A { } B b = new B(); b.Children = new List<C>(); Is there any way to force b.Children to be a collection of B ? 回答1: No, there is no way to do such thing yet. The C# language has no artifact to declare such thing: class A { public

问题 I've done alot of research on this and found a number of help sites but still can't understand why this sometimes doesn't work. I'm trying to access a sharepoint site (to which there are no restrictions for me) and extract all the files in a folder within that site. Sometimes my Path works and it does it, other times it does not. I have a feeling it works if I've gone into the sharepoint site on my browser before but can't confirm that (because I just tried it again now and it doesnt work

问题 I have searched for an answer to this question, but I cannot seem to find a solution. What I need is I have a set of coordinates (of unknown length in the beginning) and I need to determine if a point resides inside of the polygon determined by this coordinate. However, I cannot use the AWT (as I originally thought I could), as the coordinates can range anywhere in the US. I think I need to use a for-loop , with a series of less than , greater than checks. Am I on the right path, or is there

问题 I was stuck on a problem for a while, for which I derived a smaller standalone example: Axiom f : nat -> Set. Goal forall (n : nat) (e : n = n) (x : f n), match e in _ = _n return f _n -> Prop with | Logic.eq_refl => fun v : f n => v = x end x. Now, if you try to destruct e , you get the following error message: Error: Abstracting over the terms "n0" and "e" leads to a term "fun (n0 : nat) (e : n0 = n0) => forall x : f n0, match e in (_ = _n) return (f _n -> Prop) with | Logic.eq_refl => fun

问题 I have a spring based web application MyWebapp built using maven and deployed on Websphere 6.1 The folder structure is: MyApp --> src ---> main ---> The main folder is further having resources and webapp folders. webapp folders is having other folders like images, theme, jscript, JSP, META-INF, WEB-INF images folder is having icons folder with say example.png So fetching example.png on localhost as: http://localhost:9080/MyWebapp/images/icons/example.png succeeds. In jscript folder I have a

问题 I have a spring based web application MyWebapp built using maven and deployed on Websphere 6.1 The folder structure is: MyApp --> src ---> main ---> The main folder is further having resources and webapp folders. webapp folders is having other folders like images, theme, jscript, JSP, META-INF, WEB-INF images folder is having icons folder with say example.png So fetching example.png on localhost as: http://localhost:9080/MyWebapp/images/icons/example.png succeeds. In jscript folder I have a

问题 I have a spring based web application MyWebapp built using maven and deployed on Websphere 6.1 The folder structure is: MyApp --> src ---> main ---> The main folder is further having resources and webapp folders. webapp folders is having other folders like images, theme, jscript, JSP, META-INF, WEB-INF images folder is having icons folder with say example.png So fetching example.png on localhost as: http://localhost:9080/MyWebapp/images/icons/example.png succeeds. In jscript folder I have a

问题 I want to collect all the revisions history data at once. Pywikibot page.revisions() does not have the parameter to fetch number of bytes changed. It gives me all the data that I need except the number of bytes changed. How do I get the number of bytes changed? for example: for the article Main Page the revision history is here: history screenshot My current code: import pywikibot site = pywikibot.Site("en", "wikipedia") page = pywikibot.Page(site, "Main_Page") revs = page.revisions() Showing