selection

来源： https://stackoverflow.com/questions/63350209/alter-selection-behavior-for-a-jtable-to-only-select-a-variable-number-of-cells

问题 I code a List in a ScrollView, when I selected a List cell to translate to another view and return back, the cell selected indicator did not disappear after selecting. I hope after selected the list cell, the selected indicator should be disappear. I debugged, I found that the ScrollView has some problems when it worked with List.If no ScrollView, the list selection behavior is all right, if plus the ScrollView outside the list, the problem become. The other problem is How to remove the List

问题 So I am given an (unsorted) array A of N distinct integers, I am trying to implement a divide-and-conquer algorithm to find the Kth smallest element (K ≤ N) in the array (i.e. it would be the overall smallest if K=1). The algorithm returns the value of the Kth smallest element in the array. I need it to run in O(N) time in the average case. Could anyone give me some hints? 回答1: Sephy, I'm going to walk this through very carefully. You always have to be careful when helping people with

问题 I'm trying to selection objects within a region from a pandas dataframe which contains a list of item ids and lat lon pairs. Is there a selection method for this? I think this would be similar to this SO question but using PANDAS instead of SQL Selecting geographical points within area Here is my table saved in locations.csv ID, LAT, LON 001,35.00,-75.00 002,35.01,-80.00 ... 999,25.76,-64.00 I can load the dataframe, and select a rectangular region: import pandas as pd df = pd.read_csv(

问题 I'm trying to selection objects within a region from a pandas dataframe which contains a list of item ids and lat lon pairs. Is there a selection method for this? I think this would be similar to this SO question but using PANDAS instead of SQL Selecting geographical points within area Here is my table saved in locations.csv ID, LAT, LON 001,35.00,-75.00 002,35.01,-80.00 ... 999,25.76,-64.00 I can load the dataframe, and select a rectangular region: import pandas as pd df = pd.read_csv(

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . How we can select first div of page using jquery ? 回答1: jQuery first select: http://api.jquery.com/first-selector/ The :first pseudo

问题 How can I toggle the QPen color for the selected graphicsview items? Ideally I would like to handle this color change in the graphicsview or graphics scene objects rather than directly handling it in the main windows selection event. Any help is appreciated. Currently it will turn the pen color white when the object is selected. I'm not sure how to turn it back avoiding looping through all objects. Is there a way i could add a function in the MyGraphicsView class itself that would handle the

问题 Two years ago the HTML5 standard dropped the chapter "Text Selection API" which contained a specification of the Selection interface: [Stringifies] interface Selection { readonly attribute Node anchorNode; readonly attribute long anchorOffset; readonly attribute Node focusNode; readonly attribute long focusOffset; readonly attribute boolean isCollapsed; void collapse(in Node parentNode, in long offset); void collapseToStart(); void collapseToEnd(); void selectAllChildren(in Node parentNode);

问题 Two years ago the HTML5 standard dropped the chapter "Text Selection API" which contained a specification of the Selection interface: [Stringifies] interface Selection { readonly attribute Node anchorNode; readonly attribute long anchorOffset; readonly attribute Node focusNode; readonly attribute long focusOffset; readonly attribute boolean isCollapsed; void collapse(in Node parentNode, in long offset); void collapseToStart(); void collapseToEnd(); void selectAllChildren(in Node parentNode);

问题 The problem: when you double click on word in JTextArea it is marked, but when you don't release the mouse button and try to mark next word, it is not marking whole word, but single characters instead. It should mark the whole words (not single characters) when moving mouse (on double click). That's literally the default behavior in all programs which I tried, like: Notepad, Firefox, Chrome, Word, even Netbeans, etc. Same thing with triple click (when holding and moving the mouse should mark