traversal

来源： https://stackoverflow.com/questions/41028114/how-to-convert-array-of-nested-objects-to-csv

问题 I am fetching data from a news API and storing it in my state upon completion, then also passing the value of the state as props to a child component. The data returned by the API is an array of objects. I only want to pass one element (object) of that array(which is now in my state) to my child component. So, I did just that by using the arrays conventional traversal method ([]) to pass one element, but unfortunately, when I tried using the useEffect hook in my child component to console log

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 19 days ago . I need your help or if you can give me advice. I'm really struggling and some help would be perfect, so this is what I got so far; import BST, TreeNode class Bibliography: def __init__(self): self.bibtree = BST() def getReference(self,key): """Return the reference for the key, if it exists,

问题 The assembly language that I"m using is ARM Assembly. Would I use the ADD instruction to do so? Would I have to start by taking in a number in decimal and then using some instruction to convert the decimal number to binary? Let's say that I have three numbers 33, 25, and 14. I want to add them all together. Say that the three numbers are stored in an 8-bit array with binary numbers with three elements. After traversing through the array, would I have to convert the binary numbers to decimal

问题 I have a generic jQuery selector (a string): var selector = '#files li div'; and the name of a class: var myClass = 'folder'; I want to check if the selector matches elements having the class stored into myClass . As far as now I used an instance of the selector to invoke the method hasClass(): var match = $(selector).hasClass(myClass); It works, but I thought it may exist some more efficient jQuery method which allows not to create a jQuery instance to get all the elements matched by the

问题 I have a generic jQuery selector (a string): var selector = '#files li div'; and the name of a class: var myClass = 'folder'; I want to check if the selector matches elements having the class stored into myClass . As far as now I used an instance of the selector to invoke the method hasClass(): var match = $(selector).hasClass(myClass); It works, but I thought it may exist some more efficient jQuery method which allows not to create a jQuery instance to get all the elements matched by the

问题 I'm working with xml files having the structure set out below. <GroupType1> and <GroupType2> need to be processed separately. In either case, I want to loop through the <OperationEvent> elements in each <OperationStage> using XPATH. So, for each <GroupType1> , I need to get the number of <OperationStage> in <OperationStageCollection> , then get the number of <OperationEvent> in the <OperationEventCollection> of the current <OperationStage> . In pseudocode, the processing would be: For i = 1

问题 Guided by this post Preventing Directory Traversal in PHP but allowing paths I am trying to prevent directory traversal, but I am experiencing something odd, in the first instance realpath returns a good path $fPath = $path.$parent.'/'.$name; //$name (the user input) in this sample is "fff", $parent is an empty string //make sure user didn't try to traverse backwards on the basepath $basepath = $path; $realBase = realpath($basepath); echo $realBase."<br/>"; //gives: /Users/me/Documents/www

问题 I am trying to write a .bat file that allows me to traverse through directories (up or down) and let me select a file from the current directory, passing that filename out at the end of the routine. Ideally, it would handle if it is at the root of a drive (i.e. C:) or that there are no more sub directories. (If there are more elegant ways of doing what I am asking, please feel free to suggest them!) @echo off setlocal enabledelayedexpansion set FVAR= :start ::---------------------------------

问题 I am trying to write a .bat file that allows me to traverse through directories (up or down) and let me select a file from the current directory, passing that filename out at the end of the routine. Ideally, it would handle if it is at the root of a drive (i.e. C:) or that there are no more sub directories. (If there are more elegant ways of doing what I am asking, please feel free to suggest them!) @echo off setlocal enabledelayedexpansion set FVAR= :start ::---------------------------------