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Changing UITableView's section header/footer title without reloading the whole table view

由 只谈情不闲聊 提交于 2019-11-26 16:26:42
问题 Is there any way to reload the section header/footer of a table view without calling [tableView reloadData]; ? In fact, I want to show the number of cells in a table view's section in its section footer. The table view is editable and I delete or insert rows using – insertRowsAtIndexPaths:withRowAnimation: – deleteRowsAtIndexPaths:withRowAnimation: It seems that these methods do not update the section footer. Strangely, when I call these methods the table view data-source method - (NSString *

How to prevent an iframe from reloading when moving it in the DOM

由 陌路散爱 提交于 2019-11-26 16:23:35
问题 I have an iframe loaded with some content. I would like to move it inside the DOM without causing a refresh (I like the content inside it, I want to keep it). I'm doing some basic node.appendChild(iframe) to do the job. Is that possible? Thanks in advance for your help. 回答1: If you're trying to move it visually, you can try modifying the CSS to use absolute positioning or some other adjustments. However, if you're trying to actually pull it out of the DOM and insert it somewhere else, you won

How do I reload .bashrc without logging out and back in?

由 情到浓时终转凉″ 提交于 2019-11-26 15:34:14
If I make changes to .bashrc , how do I reload it without logging out and back in? George Hawkins You just have to enter the command: source ~/.bashrc or you can use the shorter version of the command: . ~/.bashrc or you could use; exec bash does the same thing. (and easier to remember, at least for me) exec command replaces the shell with given program, in our example, it replaces our shell with bash (with the updated configuration files) To complement and contrast the two most popular answers, . ~/.bashrc and exec bash : Both solutions effectively reload ~/.bashrc , but there are differences

JavaScript hard refresh of current page

由 橙三吉。 提交于 2019-11-26 15:07:39
How can I force the web browser to do a hard refresh of the page via JavaScript? Hard refresh means getting a fresh copy of the page AND refresh all the external resources (images, JavaScript, CSS, etc.). CMS Try to use: location.reload(true); When this method receives a true value as argument, it will cause the page to always be reloaded from the server. If it is false or not specified, the browser may reload the page from its cache. More info: The location object window.location.href = window.location.href 来源： https://stackoverflow.com/questions/2099201/javascript-hard-refresh-of-current

Is there an easy way to reload css without reloading the page?

由 倾然丶 夕夏残阳落幕 提交于 2019-11-26 15:02:12
I'm trying to make a live, in-page css editor with a preview function that would reload the stylesheet and apply it without needing to reload the page. What would be the best way to go about this? On the "edit" page, instead of including your CSS in the normal way (with a <link> tag), write it all to a <style> tag. Editing the innerHTML property of that will automatically update the page, even without a round-trip to the server. <style type="text/css" id="styles"> p { color: #f0f; } </style> <textarea id="editor"></textarea> <button id="preview">Preview</button> The Javascript, using jQuery:

How to automatically reload a web page at a certain time?

由 被刻印的时光 ゝ 提交于 2019-11-26 14:35:55
I have a website that I want to be reloaded at a certain time, like 3:35pm, not after a specific interval like 5min. How do I do that? The following JavaScript snippet will allow you to refresh at a given time: function refreshAt(hours, minutes, seconds) { var now = new Date(); var then = new Date(); if(now.getHours() > hours || (now.getHours() == hours && now.getMinutes() > minutes) || now.getHours() == hours && now.getMinutes() == minutes && now.getSeconds() >= seconds) { then.setDate(now.getDate() + 1); } then.setHours(hours); then.setMinutes(minutes); then.setSeconds(seconds); var timeout

How do I know that the UICollectionView has been loaded completely?

由 不想你离开。 提交于 2019-11-26 11:57:20
问题 I have to do some operation whenever UICollectionView has been loaded completely, i.e. at that time all the UICollectionView\'s datasource / layout methods should be called. How do I know that?? Is there any delegate method to know UICollectionView loaded status? 回答1: // In viewDidLoad [self.collectionView addObserver:self forKeyPath:@"contentSize" options:NSKeyValueObservingOptionOld context:NULL]; - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *

Ruby on Rails 3 - Reload lib directory for each request

由 被刻印的时光 ゝ 提交于 2019-11-26 11:53:19
问题 I\'m creating a new engine for a rails 3 application. As you can guess, this engine is in the lib directory of my application. However, i have some problems developing it. Indeed, I need to restart my server each time I change something in the engine. Is there a way to avoid this ? Can I force rails to completely reload the lib directory or a specific file and his requirements for each request ? Thanks for your help :) 回答1: TL;DR put this in config/application.rb config.eager_load_paths += ["

ObjectContext.Refresh()?

由 人走茶凉 提交于 2019-11-26 11:07:29
问题 How to update ALL the dirty entities from the data store, and reset their changed values to the original store value? The method ObjectContext.Refresh requires as a parameter the entities to be refreshed. 回答1: The following usually works: Context.Refresh(RefreshMode.StoreWins, _ Context.ObjectStateManager.GetObjectStateEntries()) It sometimes causes problems with EntityRelations. look at my comment for further details. 回答2: You can use this code: public void RefreshAll() { // Get all objects

gunicorn autoreload on source change

由 孤者浪人 提交于 2019-11-26 10:28:46
问题 Finally I migrated my development env from runserver to gunicorn/nginx. It\'d be convenient to replicate the autoreload feature of runserver to gunicorn, so the server automatically restarts when source changes. Otherwise I have to restart the server manually with kill -HUP . Any way to avoid the manual restart? 回答1: While this is old question, just for consistency - since version 19.0 gunicorn has --reload option. So no third party tools needed more. 回答2: One option would be to use the --max
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