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uitableview의 업데이트 시작, 업데이트 종료 블록에서 애니메이션을 원하지 않습니까? 사용자 지정 테이블 셀을 사용하는 UITableView가 있고 각 셀에는 UIWebView가 있습니다. UIWebView는로드하는 데 시간이 걸렸기 때문에 다시로드하지 않으려 고합니다. 어떤 상황에서는 모든 셀을로드했지만 높이가 엉망입니다. 따라서 "cellForRow"함수를 트리거하지 않고 테이블을 "릴레이 아웃"해야합니다. reloadData를 사용할 수 없습니다. 셀을 다시로드 할 것입니다. tableView.setNeedDisplay, setNeedsLayout 등을 시도했지만 아무도 테이블 셀을 재정렬 할 수 없습니다. 작동하는 유일한 방법은 beginupdates / endupdates 블록을 호출하는..

Is there a short cut for going back to the beginning of a file by vi editor? When reading a long file by vi editor, it would be very nice to get back to the beginning of the file by some short cuts when you really need to do so. Even ctrl+B sometimes is too slow. Does anyone know such a tool? After opening a file using vi 1) You can press Shift + g to go the end of the file and 2) Press g twice ..

Visitor pattern's purpose with examples [duplicate] This question already has an answer here: When should I use the Visitor Design Pattern? [closed] 20 answers I'm really confused about the visitor pattern and its uses. I can't really seem to visualize the benefits of using this pattern or its purpose. If someone could explain with examples if possible that would be great. Once upon a time... cl..

how to delete the content of text file without deleting itself I want to copy the content of file 'A' to file 'B'. after the copying is done I want to clear the content of file 'A' and want to write on it from its beginning. I can't delete file 'A' as it is related to some other task. I was able to copy the content using java's file API(readLine() ), but don't know how to clear the content of fi..

How to enter ssh password using bash? [duplicate] This question already has an answer here: Bash: controlling SSH 8 answers Everyday I am connecting to a server through ssh. I go through this routine: IC001:Desktop user$ ssh user@my.server.com user@my.server.com's password: Last login: Tue Jun 4 10:09:01 2013 from 0.0.0.0 $ I would like to automate this process and create a bash script to do it ..

Renaming part of a filename [duplicate] This question already has an answer here: Rename multiple files based on pattern in Unix 22 answers I have loads of files which look like this: DET01-ABC-5_50-001.dat ... DET01-ABC-5_50-0025.dat and I want them to look like this: DET01-XYZ-5_50-001.dat ... DET01-XYZ-5_50-0025.dat How can I do this? There are a couple of variants of a rename command, in you..

How to display loading image while actual image is downloading [duplicate] This question already has an answer here: How to show a spinner while loading an image via JavaScript 13 answers Sometimes images take some time to render in the browser. I want to show a busy image while the actual image is downloading, and when the image is downloaded, the busy image is removed and the actual image shou..

Text size of android design TabLayout tabs I have difficulties changing the text size of the tabs of design library tablayout (android.support.design.widget.TabLayout). I managed to change it by assigning tabTextAppearance in TabLayout app:tabTextAppearance="@style/MyTabLayoutTextAppearance" the following style but I have 2 side effects : 1) I lost the accent color of the selected tab 2) The tab..

How to print a linebreak in a python function? I have a list of strings in my code; A = ['a1', 'a2', 'a3' ...] B = ['b1', 'b2', 'b3' ...] and I want to print them separated by a linebreak, like this: >a1 b1 >a2 b2 >a3 b3 I've tried: print '>' + A + '/n' + B But /n isn't recognized like a line break. You have your slash backwards, it should be "\n" The newline character is actually '\n'. for pair..

Why do we need to use flatMap? I am starting to use RxJS and I don't understand why in this example we need to use a function like flatMap or concatAll; where is the array of arrays here? var requestStream = Rx.Observable.just('https://api.github.com/users'); var responseMetastream = requestStream .flatMap(function(requestUrl) { return Rx.Observable.fromPromise(jQuery.getJSON(requestUrl)); }); r..