repeat

问题 I have prepared a simple test project at GitHub for my question: I am trying to show/hide a FloatingActionButton (aka FAB) every 5 seconds by the following code in MainActivity.java: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mFab = (FloatingActionButton) findViewById(R.id.fab); mInAnimation = AnimationUtils.makeInAnimation(this, false); mInAnimation.setAnimationListener(new Animation

问题 I have a table with 3 columns: ID VALUE SEQ 1 100 2 100 3 200 4 200 5 200 Whenever value in column "VALUE is repeated in further rows, value in column "SEQ" must be incremented by 1. Expected output is: ID VALUE SEQ 1 100 1 2 100 2 3 200 1 4 200 2 5 200 3 As per my understanding it can not be done in insert query while filing data in to this table. It has to be done using post-processing may be. I guess it can be done using analytical function using "row_number() and partition by", but not

问题 For a practice test I am asked to find a way to make a button reveal text in a paragraph. Each time it is pressed, the text must change. For the first time pressed the button should say "you pressed the button" second "you pressed it again third to fifth time "you pressed the button (a number from 3 to 5) times" and sixth and onward it should say "stop!" EDIT EDIT EDIT This is the entire Original HTML, i am not sure if it is needed, but maybe the html could have something to do with the

问题 I have a app and i am currently using delayed_job. I was wondering if there are any recommended gems that do scheduling of repetitive tasks. I want to schedule task that happen on a certain frequency to clean the database/sending emails/run other methods. I mite want to run some tasks every day or every hour. Is there any good ones out there that are fairly easy to setup and config which do not use CRON. 回答1: You can convert that repetitive work to rakes and call those rakes via cron. For

问题 I am building a website with at least 7 pages and am looking for a way to avoid having to repeat all headers & footers etc. on every single html document. I know there are frames and iframes but some browsers don't support these and I want to do something more efficient and flexible for updates. Any ideas/suggestions? Thanks for the information guys! I'll be sure to try them out. One more thing is that I have a login form within my header. Will these methods affect it? Regards 回答1: Yes,

问题 I have a dataframe with individuals assigned a text id that concatenates a place-name with a personal id (see data, below). Ultimately, I need to do a transformation of the data set from "long" to "wide" (e.g., using "reshape") so that each individual comprises one row, only. In order to do that, I need to assign a "time" variable that reshape can use to identify time-varying covariates, etc. I have (probably bad) code to do this for individuals that repeat up to two times, but need to be

问题 I'm trying to do a number system calculator but only using the control or repetitive structures. Here's my sample: int base = 0, given = 0, remainder = 0; // input given here System.out.print("The answer is: "); if (base == 2){ while(given != 0){ remainder = given % base; given /= base; System.out.print("" + remainder); } } And the output goes like this: Input: 32 The answer is: 000001 The question is, how would I reverse the output to 100000 since the binary of 32 is 100000 and not 000001?

问题 I wanted to transform repeating group from the sample XML into two delimited text lines. Here is my current code version: string orderXml = @"<?xml version='1.0' encoding='utf-8'?> <Order id='79223510'> <Status>new</Status> <ShipMethod>Standard International</ShipMethod> <ToCity>Tokyo</ToCity> <Items> <Item> <SKU>SKU-1234567890</SKU> <Quantity>1</Quantity> <Price>99.95</Price> </Item> <Item> <SKU>SKU-1234567899</SKU> <Quantity>1</Quantity> <Price>199.95</Price> </Item> </Items> </Order>";

问题 Is it acceptable to repeat xml elements as shown in this example? Notice in the first example how the 'period_data' element is just repeated directly inside the 'usage_history' element without first being wrapped inside something like a 'periods' parent element. Initially it seems reduant to me to include the 'periods' parent element as the only thing inside the 'usage_history' parent are 'period_data' elements anyway. Thank you. <usage_history num_periods="2"> <period_data billing_year="2013

问题 I am setting notifications using alarm manager and broadcast receiver. I have tried to use setInexactRepeating method of an alarm manager but it dose not raise alarms at exact time above API 19. So I got a suggestion to use setExact method and set alarms manually. I don't know how can I do this. Do I need to calculate dates for every week for a year? Also the alarms I am creating I want to delete the same if the event is deleted. How can I cancel this? Using cancel method I have tried to