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Can I see changes before I save my file in Vim?

...t=nofile bh=wipe nobl noswf ro ft=" . filetype endfunction com! DiffSaved call s:DiffWithSaved() To get out of diff view you can use the :diffoff command. Below is a similar function, adapted to mimic the 'cvs diff' command... ...
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What are the differences between “=” and “

... The operator <- can be used anywhere, whereas the operator = is only allowed at the top level (e.g., in the complete expression typed at the command prompt) or as one of the subexpressions in a braced list of expressions. Let’s not put too fine a point on it: the R documentation is (su...
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UIActivityViewController crashing on iOS 8 iPads

...image]; UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:postItems applicationActivities:nil]; //if iPhone if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) { [self presentViewController:controller animated:YES completion:nil]; } //if iPa...
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Why do we need to install gulp globally and locally?

2 manuals about gulp say that I need to install gulp first globally (with -g flag) and then one more time locally. Why do I need this? ...
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How to create directories recursively in ruby?

...c/d.txt, but I do not know if any of these directories exist". My solution allows to use the existing file path ('/a/b/c/d.txt'), and, without separate parsing, create all the folders. – Vadym Tyemirov Oct 9 '19 at 4:47 ...
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How to install a gem or update RubyGems if it fails with a permissions error

I'm trying to install a gem using gem install mygem or update RubyGems using gem update --system , and it fails with this error: ...
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Can Json.NET serialize / deserialize to / from a stream?

... The current version of Json.net does not allow you to use the accepted answer code. A current alternative is: public static object DeserializeFromStream(Stream stream) { var serializer = new JsonSerializer(); using (var sr = new StreamReader(stream)) u...
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How to do a regular expression replace in MySQL?

...ary linked here doesn't seem to have good windows support. The windows installation method outlined did not work well for me. – Jonathan Dec 5 '13 at 23:58 2 ...
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How to distinguish between left and right mouse click with jQuery

... Keep scrolling down and make sure to read @JeffHines's answer. Basically, jQuery has this built-in as the event 'contextmenu'. – jpadvo Dec 17 '11 at 20:30 ...
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MQTT物联网协议完全实践指南 · App Inventor 2 中文网

...tem to TemperatureValues value // 限制数据点数量(保留最近100个点) if length of TemperatureTimestamps > 100 then remove list item at position 1 from TemperatureTimestamps remove list item at position 1 from TemperatureValues end if // 更新图表显...