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Getting an object from an NSSet
...se filteredSetUsingPredicate if you have some kind of unique identifier to select the object you need.
First create the predicate (assuming your unique id in the object is called "identifier" and it is an NSString):
NSPredicate *myPredicate = [NSPredicate predicateWithFormat:@"identifier == %@", i...
How to do 3 table JOIN in UPDATE query?
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This does an implicit JOIN in the same way doing SELECT * FROM TABLE_A, TABLE_B ... does
– Madbreaks
Sep 22 '15 at 22:26
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MySQL Database won't start in XAMPP Manager-osx
...-0, I changed the port number from 3306 to 3307.
Click on Manage Servers
Select MySQL Database
Click on Configure on your right
Change your port number to 3307
Click OK
Close your Control Panel and relaunch it.
You are now good to go.
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How to drop a list of rows from Pandas dataframe?
... +1, this is the only answer that tells you how to remove a row selecting a column different from the first one.
– Alejo Bernardin
May 3 at 5:31
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How do I join two lines in vi?
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If you want to join the selected lines (you are in visual mode), then just press gJ to join your lines with no spaces whatsoever.
This is described in greater detail on the vi/Vim Stack Exchange site.
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Add 10 seconds to a Date
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Can anybody please explain what the selected answer (currently from @zzzzBov) is doing wrong? It works for me.
– tsemer
Jul 21 '16 at 10:55
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How to stop C++ console application from exiting immediately?
..., please expand Configuration Properties -> Linker -> System, please select Console (/SUBSYSTEM:CONSOLE) in SubSystem dropdown. Because, by default, the Empty project does not specify it.
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Untrack files from git temporarily
...to remove ALL the files in the build folder or the bin folder, Rather than selecting each files separately.
You can use this command:
git rm -r -f /build\*
Make sure that you are in the parent directory of the build directory.
This command will, recursively "delete" all the files which are in the...
How do I remove  from the beginning of a file?
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Open your file in Notepad++. From the Encoding menu, select Convert to UTF-8 without BOM, save the file, replace the old file with this new file. And it will work, damn sure.
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How do I drop a MongoDB database from the command line?
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Start MongoDB
Command for Database drop is :
1. first select the database which you want to delete
use < database name >
2. Then use this..
db.dropDatabase()
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