nested

问题 Maven allows parent-child relationship between projects. By default, parent project is expected locating in parent folder. Is it possible to adopt this structure to Eclipse? Currently I have imported all folders separately as project with sources without copying and consequently have separate nodes for each project in Package Explorer . Unfortunately it causes various glitches including EGit functionning. 回答1: Eclipse 4.5 (starting from Mars M5) will include a mechanism that allows to nested

问题 I have the following construct in my code: f :: Maybe A -> X f a = case a of Nothing -> x (Just b) -> case b of Nothing -> y (Just c) -> case c of Nothing -> z (Just d) -> d I'm not seeing an obvious way to simplify this instead of using nested maybe functions, which wouldn't make the whole thing look much better. Are there any clever - but still understandable - tricks that would help make this construct more "elegant"? 回答1: UPDATED 2 Monad Either is for you import Data.Maybe (maybe) maybeE

问题 I have this code: var string = { nameString : "nameValue", nameString2 : "nameValue2", nameString3 : "nameValue3", datathing : 0, }; var data = { data : 1, dataNum2 : 2, dataNum3 : 3, dataNum4 : 4, }; var thing = { datathing1 : 10, datathing2 : 20, datathing3 : 30, datathing4 : 40, }; var object = { object1 : string, data1 : data, thing1 : thing, }; Why do neither of these means to access the data work: alert("testReference= " + object['object1']['string']['nameString']); alert("testReference

问题 I am new to programming and I'm trying to extract values from the Amazon MWS API. It returns the biggest nested dictionary I've seen and I'm having trouble figuring out how to loop through it to find the value I need. Example: {'Products': {'Product': {'AttributeSets': {'ItemAttributes': {'Binding': {'value': 'Video ' 'Game'}, 'Brand': {'value': 'Nintendo'}, 'Color': {'value': 'blue'}, 'ESRBAgeRating': {'value': 'Everyone'}, 'HardwarePlatform': {'value': 'Android/iOS'}, 'IsAdultProduct': {

问题 I'm trying to create a navigation menu that contains multiple level of organization. I'm building a nested jQuery UI Accordion that works great if all my content in the lowest level (deepest) nest of the accordion. The problem is that some elements will have content and a sub accordion. If I place some text in side the top accordion it looks great...but as soon as I wrap it in tags it breaks the nested accordion in that element Here is a mockup of what I'm trying to get it to look like Photo

问题 I'm trying to create a navigation menu that contains multiple level of organization. I'm building a nested jQuery UI Accordion that works great if all my content in the lowest level (deepest) nest of the accordion. The problem is that some elements will have content and a sub accordion. If I place some text in side the top accordion it looks great...but as soon as I wrap it in tags it breaks the nested accordion in that element Here is a mockup of what I'm trying to get it to look like Photo

问题 I have a structure like [[[ ]]] which I want to convert to [] . E.g. [ [ [ "Hi" ] ] ] into [ "Hi" ] How can I do this in Swift? 回答1: joined() returns (a lazy view of) the elements of an collection, concatenated. This can be applied repeatedly for deeper nested collections: let arr = [ [ [ "A", "B" ], ["C"] ], [ [ "D", "E" ], ["F"] ] ] let flattened = Array(arr.joined().joined()) print(flattened) // ["A", "B", "C", "D", "E", "F"] The outer Array() constructor builds an array from the sequence.

问题 I am working on a report for which I have to export a large number of similar data frames into nice looking tables in Word. My goal is to achieve this in one go, using flextable to generate the tables and purrr / tidyverse to apply all the formatting procedures to all rows in a nested data frame. This is what my data frame looks like: df <- data.frame(school = c("A", "B", "A", "B", "A", "B"), students = c(round(runif(6, 1, 10), 0)), grade = c(1, 1, 2, 2, 3, 3)) I want to generate separate

问题 I am working on a report for which I have to export a large number of similar data frames into nice looking tables in Word. My goal is to achieve this in one go, using flextable to generate the tables and purrr / tidyverse to apply all the formatting procedures to all rows in a nested data frame. This is what my data frame looks like: df <- data.frame(school = c("A", "B", "A", "B", "A", "B"), students = c(round(runif(6, 1, 10), 0)), grade = c(1, 1, 2, 2, 3, 3)) I want to generate separate

问题 I have an array like [ "parent1|child1|subChild1", "parent1|child1|subChild2", "parent|child2|subChild1", "parent1|child2|subChild2", "parent2|child1|subChild1", "parent2|child1|subChild2", "parent2|child2|subChild1", . . . ] Wherein my first string before | is the parent and the second string before | is the child and the third string after the second | is the subchild How can I convert this array into an object like [ { "id": "parent1", "children":[ { "id": "child1", "children":[ { "id":