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set up device for development (???????????? no permissions)
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I use root to execute command "adb devices" under <android-SDK>/platform-tool/ , I got "No command 'adb' found", why?
– Leem.fin
Feb 9 '12 at 12:11
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Does Foreign Key improve query performance?
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foreign keys do improve performance, at least in MySQL. Moreover, you're right, the creation of a FK does not create an index; the creation of a FK requires an index
– Félix Gagnon-Grenier
Aug 26 '14 at 17:31
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Why all the Active Record hate? [closed]
...database itself, tables, relations, even some logic if the DBMS allows it (MySQL is also grown-up now)
A2) very often, there is more than a data store: file system (blobs in database are not always a good decision...), legacy systems (imagine yourself "how" they will be accessed, many varieties pos...
How to create a new (and empty!) “root” branch?
I would like to define a new "root" branch in this git repository. By "root" branch I mean a branch that is entirely independent of all the other branches in the repository 1 .
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Change project name on Android Studio
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This did the trick for me:
Close Android Studio
Change project root directory name
Open Android Studio
Open the project (not from local history but by browsing to it)
Clean project
If your settings.gradle contains the below line, either delete it or update it to the new name.
rootProj...
How do I specify the Linq OrderBy argument dynamically?
...and 3.1 for me as well. with the error ~"cant translate". I use Pomelo for MySQl if that is relevant. The problem is the Expression. IF you hand code the expression it works. So instead of Lambda.Expression() just provide something like: LambdaExpression orderByExp1 = (Expression<Func<AgencyS...
Using OpenSSL what does “unable to write 'random state'” mean?
...appening seems to be that the .rnd file in your home directory is owned by root rather than your account. The quick fix:
sudo rm ~/.rnd
For more information, here's the entry from the OpenSSL FAQ:
Sometimes the openssl command line utility does not abort with a "PRNG not seeded" error messag...
SQL query for today's date minus two months
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If you use MySQL this would become: MyDate < DATE_ADD(NOW(), INTERVAL -2 MONTH)
– Stefan
Feb 27 '14 at 15:51
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R - Concatenate two dataframes?
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If you're getting the union of more than 2 data frames, you can use Reduce(rbind, list_of_data_frames) to mash them all together!
– Yourpalal
Aug 13 '15 at 21:12
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IntelliJ does not show 'Class' when we right click and select 'New'
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The directory or one of the parent directories must be marked as Source Root (In this case, it appears in blue).
If this is not the case, right click your root source directory -> Mark As -> Source Root.
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