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How to find out which package version is loaded in R?
...es is the current version installed at the location the package was loaded from: it can be wrong if another process has been changing packages during the session." So: if you want to know wether the package is loaded or not, better use "Rmpi" %in% loadedNamespaces() ; if you want to know which versi...
How to create abstract properties in python abstract classes
...I create a base abstract class Base . I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod .
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Implications of foldr vs. foldl (or foldl')
...st element (which, in the example above, would itself be an infinite list, from INF down to 1).
– Will Ness
Mar 24 '17 at 7:37
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git error: failed to push some refs to remote
...ue with Git LFS, I've surrendered myself to having to use the command line from now on as a result haha.
– Tyler C
Mar 30 '17 at 5:24
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How do I create a nice-looking DMG for Mac OS X using command-line tools?
...s points for auto-copying to /Applications if the app detects it's running from ~/Downloads. See also this old article by John Gruber.
– Andrey Tarantsov
Apr 7 '16 at 14:52
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How to display line numbers in 'less' (GNU)
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From the manual:
-N or --LINE-NUMBERS
Causes a line number to be displayed at the beginning of each
line in the display.
You can also toggle line numbers without quitting less by typing -N.
I...
How to convert a string to lower or upper case in Ruby
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.titleize is from Rails. Cannot find it in ruby String documentation
– ronald8192
Apr 12 '17 at 19:36
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How to access a dictionary element in a Django template?
...rrible solution either. The goal of templates in Django is to insulate you from code in your templates and vice-versa.
I'd try the above method and see what SQL the ORM generates as I'm not sure off the top of my head if it will pre-cache the properties and just create a subselect for the property o...
Design Patterns web based applications [closed]
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@masato: by the way, if you'd like to retrieve them from web.xml, then you could use a ServletContextListener for this. Have the factory implement it (and register as <listener> in web.xml) and do the filling job during contextInitialized() method.
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Why does struct alignment depend on whether a field type is primitive or user-defined?
...d for padding so in actuality every structure is at least 16 bytes in size from the get go.
if you add 16 bytes from ints and a string ref to: 0000000003e72d18 + 8 bytes EE/padding you will end up at 0000000003e72d30 and this is the staring point for string reference, and since all references are ...