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问题 I made this program were the user can type in a year between 2009 and 2011 and get snow depth and air temperature data for the chosen year displayed on a graph. I have one xls file for the temperature for each day from day 1 to day 365. I also have another xls file for snow depth from day 1 to day 212. So some days they didn't bother to measure snow depth because it was summer anyways. Between 30. april to 1. october they didn't measure snow depth. I want to add 153 zeroes with code between

问题 I am using Cloud Firestore as my database This is my form codes on my webpage that creates a new document into my Cloud Firestore collection called "esequiz". So how do I code it in such a way that it always plus 1 to the number of documents there are in the database? And also set a limit to having the amount of documents inside the database form.addEventListener('submit', (e) => { e.preventDefault(); db.collection('esequiz').add({ question: form.question.value, right: form.right.value, wrong

问题 I have to display data from the database in a listview. I have fetch all the data in group by categoty and displayed in a Listview. I have used the following code. private ListView infos; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ......... ......... infos = new ListView(this); model = infoDataHelper.getCursor(addType); adapter = new InfoAdapter(model); infos.setAdapter(adapter); ......... ......... } class InfoAdapter extends CursorAdapter

问题 what's the easiest way to add the value of two textField to equal a sum to a label. Here are the text fields and label I am using: @IBOutlet weak var f1TextField: UITextField! @IBOutlet weak var f2TextField: UITextField! @IBOutlet weak var speedLabel: UILabel! I want to add f1TextField with f2TextField and show the result in the "speedLabel". 回答1: You can use the power of functional swift like this: if let textField1String = textField1.text, let textField2String = textField2.text { let arr =

问题 I'm trying to get 2 raw input values added together. Here's the code: def number_of_limbs(legs, arms, limbs): print "You have %s legs O.o" % legs print "You also have %s arms o.O" % arms print "You have %r limbs!! O.O" % limbs legs = int(raw_input("How many legs do you have? ")) arms = int(raw_input("And how many arms do you have? ") limbs = legs + arms number_of_limbs(legs, arms, limbs) It's supposed to ask how many legs, how many arms, and then add them together. Then tell how many limbs in

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 9 days ago . I have a folder with more files .ovpn contain text Path: D:\Program files\config Extension files: *.ovpn I need to add in every files a new line contains mssfix 0 in a certain position in the file mssfix 0 will be added at line 96 or creating a new line at line before resolv-retry

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 9 days ago . I have a folder with more files .ovpn contain text Path: D:\Program files\config Extension files: *.ovpn I need to add in every files a new line contains mssfix 0 in a certain position in the file mssfix 0 will be added at line 96 or creating a new line at line before resolv-retry

问题 I'm dinamically wrapping a fixed number of divs from an array (e.g. 4 in each group). The number of .item div's returned from the array is unknown... I need to recursively add the same class to those groups of divs wrapped toghether: <div class="wrapper"> <div class="item"></div> <div class="item"></div> <div class="item"></div> <div class="item"></div> </div> <div class="wrapper"> <div class="item"></div> <div class="item"></div> <div class="item"></div> <div class="item"></div> </div> <!--

问题 I am making an app where the user has to double tap a segue to move to the next storyboard, but I cannot find anywhere where it tells you how to do this. Does anyone know how I can achieve this? 回答1: If you do this in Interface Builder with a storyboard: Drag a tap gesture recognizer from the object library onto your view. Make sure the view you dragged it to has "user interaction enabled" checked. Select the tap gesture you added to your scene (which you can find in your document outline on

问题 Basiccly i have problem with xml and xslt which i do not know how to solve, and would appreciate any help regarding this matter where to start. I have XML: <root> <test value="1" setting="3"> <tag1>data....</tag1> <tag2>data....</tag2> <tag n+1>data....</tag n+1> </test> <test value ... . . . </test> </root> Now i would now need to copy, all nodes in "test" node in this way and add always value 3 to settings value (settings value is changing in test node) in 4 new nodes like shown below so i