nested

问题 I have to deal with JSON documents that contain nested documents and at some level have an array which in turn contains individual documents that conceptionally would map back to "data frame rows" when reading/parsing the JSON in R. First order problem/question I'm looking for a way to ensure that either all data frames are always turned into tibbles or that at least the "leaf data frames" become tibbles while the the "parent data frames" are allowed to become lists for arbitrary nested

问题 I have a worksheet with the following contents in A1:G1 7 8 4 2 9 11 10 Formula =SUMPRODUCT(MIN($B1:$G1-$A1)) (1) evaluates to -5, =SUMPRODUCT(ABS($B1:$G1-$A1)) (2) evaluates to 18. But =SUMPRODUCT(MIN(ABS($B1:$G1-$A1))) (3) gives #VALUE! . To try to understand the issue, I use Formula Auditing -> Evaluate Formula. In the formulas that work (1 and 2), $A1 is evaluated (underlined) first. In the formula that doesn't work (3), $B1:$G1 is evaluated (underlined) first. What is the reason for the

问题 I have a worksheet with the following contents in A1:G1 7 8 4 2 9 11 10 Formula =SUMPRODUCT(MIN($B1:$G1-$A1)) (1) evaluates to -5, =SUMPRODUCT(ABS($B1:$G1-$A1)) (2) evaluates to 18. But =SUMPRODUCT(MIN(ABS($B1:$G1-$A1))) (3) gives #VALUE! . To try to understand the issue, I use Formula Auditing -> Evaluate Formula. In the formulas that work (1 and 2), $A1 is evaluated (underlined) first. In the formula that doesn't work (3), $B1:$G1 is evaluated (underlined) first. What is the reason for the

问题 I would like to be able to access data from a file, organizing them into a structure that I think should be a dictionary of lists of dictionaries, from what I understand, probably like the following: ID_FILE = { 'KEY_1': [ { 'R_1': [ { 'A_1': [ { 'P_1': ['a', 'b', 'c', 'd'] }, { 'P_2': ['a', 'b', 'c', 'd'] }, { 'P_3': ['a', 'b', 'c', 'd'] } ], 'A_2': [ { 'P_1': ['a', 'b', 'c', 'd'] }, { 'P_2': ['a', 'b', 'c', 'd'] }, { 'P_3': ['a', 'b', 'c', 'd'] } ], 'A_3': [ { 'P_1': ['a', 'b', 'c', 'd'] },

问题 I have an XML file that is structured something like this: <element1> <element2> <element3> <elementIAmInterestedIn attribute="data"> <element4> <element5> <element6> <otherElementIAmInterestedIn> <data1>text1</data1> <data2>text2</data2> <data3>text3</data3> </otherElementIAmInterestedIn> </element6> </element5> </element4> </elementIAmInterestedIn> <elementIAmInterestedIn attribute="data"> <element4> <element5> <element6> <otherElementIAmInterestedIn> <data1>text1</data1> <data2>text2<

问题 Just curious, I spent an embarrassing amount of time trying to get an array of all the records in a nested model. I just want to make sure there is not a better way. Here is the setup: I have three models that are nested under each other (Facilities >> Tags >> Inspections), producing code like this for routes.rb: map.resources :facilities do |facilities| facilities.resources :tags, :has_many => :inspections end I wanted to get all of the inspections for a facility and here is what my code

问题 I'm writing a tool that automatically generate code. This tool generates code for a XAML (WPF) me this way. How can I solve this problem in a situation like that have nested Binding? i received the error that : System.windows.data.binding does not have a content property . Pls help me :) <Grid xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:assembly="http://www.vakifbank.com/windows/usercontrols" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:assembly0=

问题 This is my input: dict1 = { 'home': 'Documents'} dict2 = { 'home': {'Documents': 'projects'}} dict3 = {'projects': 'test.py'} dict4 = {'projects': 'test2.py'} dict5 = {'Documents': 'old_memes'} dict6 = {'old_memes': 'me_gusta.jpg'} dict7 = {'old_memes': 'fml.jpg'} My goal is to have an output of a single dictionary, like this: final_dict = {'home': {'Documents': [ {'projects': ['test.py','test2.py']}, {'old_memes':['me_gusta.jpg','fml.jpg']} ] } } I searched around, but couldn't find nothing

问题 I would like to define tasks using NSDictionary, which I'd like to save in a plist file (I didn't have much luck with Core Data so far), but got stuck at two points: -- When using initWithObjectsAndKeys: I can change the data type to number or boolean, using NSDate's numberWithInt: and numberWithBool: methods, respectively. I can't seem to find the method to change the type to date though. I couldn't find anything like that in the documentation. -- The second problem I ran into was with the

问题 I would like to define tasks using NSDictionary, which I'd like to save in a plist file (I didn't have much luck with Core Data so far), but got stuck at two points: -- When using initWithObjectsAndKeys: I can change the data type to number or boolean, using NSDate's numberWithInt: and numberWithBool: methods, respectively. I can't seem to find the method to change the type to date though. I couldn't find anything like that in the documentation. -- The second problem I ran into was with the