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How do I get around type erasure on Scala? Or, why can't I get the type parameter of my collections?

... list of ints!") } You can also do this using ClassTags (which saves you from having to depend on scala-reflect): import scala.reflect.{ClassTag, classTag} def matchList2[A : ClassTag](list: List[A]) = list match { case strlist: List[String @unchecked] if classTag[A] == classTag[String] => p...
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How to write trycatch in R

I want to write trycatch code to deal with error in downloading from the web. 5 Answers ...
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git-diff to ignore ^M

...pe this still works … And then convert your files: # Remove everything from the index $ git rm --cached -r . # Re-add all the deleted files to the index # You should get lots of messages like: "warning: CRLF will be replaced by LF in <file>." $ git diff --cached --name-only -z | xargs -0 ...
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Change private static final field using Java reflection

... Assuming no SecurityManager is preventing you from doing this, you can use setAccessible to get around private and resetting the modifier to get rid of final, and actually modify a private static final field. Here's an example: import java.lang.reflect.*; public class E...
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Is there such a thing as min-font-size and max-font-size?

...g in making a media query for every step we eant in our css, changing font from a fixed amount to another fixed amount. It works, but it is very boring to do, and you don't have a smooth linear aspect. 2) As AlmostPitt explained, there is a brillant solution for the minima : font-size: calc(7px ...
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How can I debug my JavaScript code? [closed]

...nc(){ //Some stuff debugger; //Debugging is automatically started from here //Some stuff } func(); When the browser runs the web page in developer option with enabled debugger, then it automatically starts debugging from the debugger; point. There should be opened the developer windo...
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converting a base 64 string to an image and saving it

...e64, //this image is a single pixel (black) byte[] bytes = Convert.FromBase64String("R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw=="); Image image; using (MemoryStream ms = new MemoryStream(bytes)) { image = Image.FromStream(ms); } return image; } ...
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Android 'Unable to add window — token null is not for an application' exception

...ield: this.getActivity().getParent() and it works fine for me. This was from a class which extends from "Fragment": public class filtro extends Fragment{... share | improve this answer ...
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SVN needs-lock 设置强制只读属性(官方资料) - 更多技术 - 清泛网 - 专注...

...lock 设置强制只读属性(官方资料)Automatic lock-modify-unlockFrom SubversionWikiJump to: navigation, searchDifferent versions of binary files cannot be...Automatic lock-modify-unlock From SubversionWiki Jump to: navigation, search Different versions of binary files cannot be m...
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How to pretty print nested dictionaries?

...r that like this one and bind it to the type you want with set_formater : from collections import OrderedDict def format_ordereddict(self, value, indent): items = [ self.lfchar + self.htchar * (indent + 1) + "(" + repr(key) + ', ' + (self.types[ type(value[key]) if ...