packages

问题 I am picking up an existing codebase that is Groovy and Grails, but the package structure seems very odd to me. For a domain class they put it in the following package com.company.domain then for the controller of that class it is com.company.controller That structure seems very off to me since the domain and controller classes are already organized under their own folders in the grails-app folder. My plan is to redo the packages and group based on actual use such as com.company.billing and

问题 When I import the igraph package in my project, I get an AttributeError. This only happens in the project directory: [12:34][~]$ python2 Python 2.7.1 (r271:86832, Apr 15 2011, 12:09:10) [GCC 4.5.2 20110127 (prerelease)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import igraph >>> [12:34][~]$ cd projectdir/ [12:34][projectdir]$ python2 Python 2.7.1 (r271:86832, Apr 15 2011, 12:09:10) [GCC 4.5.2 20110127 (prerelease)] on linux2 Type "help", "copyright",

问题 I'm creating a home launcher and I want to have a compatibility with the Android 5.0, Lollipop. I want to get a list of recent apps on the launcher. But since ActivityManager.getRecentTasks() no longer works in API 21, how can I do this ? 回答1: String topPackageName ; if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { UsageStatsManager mUsageStatsManager = (UsageStatsManager)getSystemService("usagestats"); long time = System.currentTimeMillis(); // We get usage stats for the last 10

问题 I have a problem with installing "eurostats" package in R. After breaking down the problem, I deduced that the problem lies with "readr" package. Trying to install it, this occurs: * installing *source* package ‘readr’ ... ** libs g++ -I/usr/share/R/include -DNDEBUG -I"/home/shiny/R/x86_64-pc-linux-gnu-library/3.3/Rcpp/include" -I"/home/shiny/R/x86_64-pc-linux-gnu-library/3.3/BH/include" -fpic -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY

问题 I used aptitude install to install a package, Ubuntu 11.10 oneiric, that apparently I couldn't install because of dependencies. I removed a couple of more libraries while doing it. I uninstalled Rstudio but still can't install R on my machine. I'm on ubuntu and this is what I get while running sudo apt-get install r-base The following packages have unmet dependencies: r-base : Depends: r-base-core (>= 2.15.3-1quantal0) but it is not going to be installed Depends: r-recommended (= 2.15.3

问题 I have a SQL Server database that has a huge proliferation of stored procedures. Large numbers of stored procedures are not a problem in my Oracle databases because of the Oracle "package" feature. What do programmers do to get around the lack of a "package" feature like that of Oracle? 回答1: While SQL Server has nothing to offer by way of the "cool features" of encapsulation and package state like you are used to , you can organize your stored procedures into schemas. In enterprise manager,

问题 I'm having a problem accessing an object defined in the root package. If I have all my code in one file, it works fine, but when I split it across two files, I can't get it past the compiler. This works fine: All in one file called packages.scala : object Foo val name = "Brian" } package somepackage { object Test extends App { println(Foo.name) } } Witness: $ scalac packages.scala $ scala -cp . somepackage.Test Brian But if I split the code across two files: packages.scala object Foo { val

问题 I have an android phonegap project, and an ios phonegap project. They were created using a given package name, but I now have to change this package name. In Android, I think I have to change package name in manifest, plus rename/move the java file in the src folder, and change inside this java file to reflect the new package name. Then clean and build. Does this sound right? I also noticed an option in Eclipse Android Tools >> Rename Application Package, where it asks for a package name.

问题 In Java, do primitive types and arrays have a containing package? Probably not, but just want to be certain. 回答1: Simple Answer Let's test: public static void main(final String[] args){ System.out.println(long.class.getPackage()); System.out.println(Object[].class.getPackage()); } Output: null null No they don't :-) Primitive Types Primitive classes are special constructs that don't have a package. For reference, see the source of Long.TYPE, the alias for long.class : /** * The <code>Class<

问题 I am trying to install this particular package into my program and get the following error: Error Could not install package 'Xamarin.Android.Support.Compat 24.2.1'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v6.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. What exactly is my project suppost to target and how do I make this