大约有 16,000 项符合查询结果(耗时:0.0383秒) [XML]

https://stackoverflow.com/ques... 

Create RegExps on the fly using string variables

...e commonly you want to replace all occurrences, in which case, you have to convert the string into a global (/.../g) RegExp. You can do this from a string using the new RegExp constructor: new RegExp(string_to_replace, 'g') The problem with this is that any regex-special characters in the string ...
https://stackoverflow.com/ques... 

Copy constructor versus Clone()

...e Clone() method on ICloneable should be a deep or shallow clone, thus the interface is semantically broken as your callers won't know whether the call will deep or shallow clone the object. Instead, you should define your own IDeepCloneable (and IShallowCloneable) interfaces with DeepClone() (and ...
https://stackoverflow.com/ques... 

Best way to implement request throttling in ASP.NET MVC?

... executing this decorated route again. /// </summary> public int Seconds { get; set; } /// <summary> /// A text message that will be sent to the client upon throttling. You can include the token {n} to /// show this.Seconds in the message, e.g. "Wait {n} seconds bef...
https://stackoverflow.com/ques... 

In pure functional languages, is there an algorithm to get the inverse function?

...e was this message to -cafe, with an evil hack for inverting put functions into any record structures deriving Data: haskell.org/pipermail/haskell-cafe/2008-April/042193.html using an approach similar to that later presented (more rigorously, more generally, more principled, etc.) in "for free". ...
https://stackoverflow.com/ques... 

Binding a WPF ComboBox to a custom list

...code-behind: namespace WpfApplication6 { /// <summary> /// Interaction logic for Window1.xaml /// </summary> public partial class Window1 : Window { public Window1() { InitializeComponent(); ConnectionViewModel vm = new Connec...
https://stackoverflow.com/ques... 

What's the difference between String(value) vs value.toString()

...cation, the [[DefaultValue]] internal operation. Briefly summarized, when converting from Object-to-String, the following steps are taken: If available, execute the toString method. If the result is a primitive, return result, else go to Step 2. If available, execute the valueOf method. If t...
https://stackoverflow.com/ques... 

Mean per group in a data.frame [duplicate]

...0.33333 #3 Cat 2 44.66667 54.00000 Using data.table: # At first, I convert the data.frame to data.table and then I group it setDT(d) d[, .(Rate1 = mean(Rate1), Rate2 = mean(Rate2)), by = .(Name)] # Name Rate1 Rate2 #1: Aira 16.33333 47.00000 #2: Ben 31.33333 50.33333 #3: Cat 44.66...
https://stackoverflow.com/ques... 

How to set standard encoding in Visual Studio

...files comform to set rules. Note that Visual Studio does not automatically convert all your files but do its bit when you work with files in IDE (open and save). What next While you could have a Visual-studio-wide setup, I strongly suggest to still include an EditorConfig root to your solution ve...
https://stackoverflow.com/ques... 

What does “Content-type: application/json; charset=utf-8” really mean?

...", "UTF-8");) for me and I had to retrieve response data as draw bytes and convert it into String using UTF-8. So, it is recommended to be explicit and avoid assumption of default value. share | imp...
https://stackoverflow.com/ques... 

How do I change the formatting of numbers on an axis with ggplot?

... E.g.: (3x10^+2 -> 3x10^2) l <- gsub("e\\+","e",l) and after it: # convert 1x10^ or 1.000x10^ -> 10^ l <- gsub("\\'1[\\.0]*\\'\\%\\*\\%", "", l) to make it in format usually used in papers. – John_West Feb 23 '16 at 14:08 ...