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Differences between “java -cp” and “java -jar”?
...en running a Java application with java -cp CLASSPATH and java -jar JAR_FILE_PATH ? Is one of them preferred to the other for running a Java application? I mean which one of these ways is more expensive for JVM (according to their machine resources usage)?
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Correct way to define C++ namespace methods in .cpp file
...id f(); }; X operator==( X const &, X const & ); }, now in the cpp file with the using statement you can define the member function as void X::f() {}, but if you define X operator==(X const&, X const&) you will be defining a different operator from the one defined in the header (you ...
Is there a version control system for database structure changes?
...ration -- a quick script to change the database.
You generate a migration file, which has rules to increase the db version (such as adding a column) and rules to downgrade the version (such as removing a column). Each migration is numbered, and a table keeps track of your current db version.
To mi...
TypeScript with KnockoutJS
...s it purely so that you can use library functions in a TypeScript-compiled file without the compiler complaining? If that's the case, you wouldn't need to reference the definition in your application, just when you compile the ts files, correct?
– undeniablyrob
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Good Linux (Ubuntu) SVN client [closed]
...UI for, and whether you would prefer to open up a GUI app and download the files, or just type "svn co svn://site-goes-here.org/trunk"
You can easily add, remove, move, commit, copy or update files with simple commands given with "svn help", so for most users it is more than enough.
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nodejs require inside TypeScript file
... a set of default definitions for window, document and such specified in a file called lib.d.ts. If I do a grep for require in this file I can find no definition of a function require. Hence, we have to tell the compiler ourselves that this function will exist at runtime using the declare syntax:
d...
Where does R store packages?
... default, I prefer to have them installed in my home directory. In my .Rprofile, I have this line:
.libPaths( "/Users/tex/lib/R" )
This adds the directory "/Users/tex/lib/R" to the front of the .libPaths variable.
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How do I run a Ruby file in a Rails environment?
I want to run a Ruby file in the context of a Rails environment.
rails runner almost does what I want to do, but I'd like to just give it the file name and arguments. I'm pretty sure this is possible since I've done it before. Can someone remind me how to do this?
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Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
...on ONE machine:
Chrome: Stand-alone installers can be downloaded from File Hippo. It is also possible to run multiple Chrome versions
side-by-side.
Although Sandboxie can be used, it's
recommended to use the next native method in order to run multiple
versions side-by-side.
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Saving a Numpy array as an image
...cipy. An alternative a few comments below is to use imageio.imwrite('image_file.jpg', array)
– Psi-Ed
May 3 at 6:17
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