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Will iOS launch my app into the background if it was force-quit by the user?
I am triggering a background fetch by using the content-available flag on a push notification. I have the fetch and remote-notification UIBackgroundModes enabled.
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Objective-C class -> string like: [NSArray className] -> @“NSArray”
... the class, including its name, the methods it implements, the superclass, etc. NSStringFromClass just pulls the name of the class from this struct and converts it to an NSString. Don't store the class name in a static NSString, it won't offer any performance advantage.
– dream...
“Java DateFormat is not threadsafe” what does this leads to?
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The specifications of Format, NumberFormat, DateFormat, MessageFormat, etc. were not designed to be thread-safe. Also, the parse method calls on Calendar.clone() method and it affects calendar footprints so many threads parsing concurrently will change the cloning of the Calendar instance.
For ...
Access denied for user 'root'@'localhost' while attempting to grant privileges. How do I grant privi
...ratch I did:
# su - mysql
$ rm -rf /var/lib/mysql/*
$ mysql_install_db
# /etc/init.d/mysql start
Then set root password (/usr/bin/mysqladmin -u root password), and all worked as expected with the GRANT commands...
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Error in SQL script: Only one statement is allowed per batch
...that PostDeploy. In such file you could have various commands like inserts etc.
Then you can use output of Database project as dacpac file for Data-Tier DB applications (Otherwise it's not included).
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Plotting a list of (x, y) coordinates in python matplotlib
... So there is no way to have a np.array of data=np.array([[x1,y1],[x2,y2],etc.]) and using plt.plot(data). I'll always have to give two arrays instead of arrays of arrays?
– Max Coplan
Dec 3 '18 at 16:15
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How to run Django's test database only in memory?
...do service mysql stop
$ sudo cp -pRL /var/lib/mysql /dev/shm/mysql
$ vim /etc/mysql/my.cnf
# datadir = /dev/shm/mysql
$ sudo service mysql start
Beware, it's just for testing, after reboot your database from memory is lost!
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Thou shalt not inherit from std::vector
...of different types of iterators: const iterators, random access iterators, etc.
Therefore I recommend you to accept this convention and design your algorithms in such way that they won't care about what is the container they're working on - and they would only require a specific type of iterator wh...
How to add a footer to a UITableView in Storyboard
...an then drag subviews such as labels and buttons there, adjust the height, etc.
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When should I use a struct instead of a class?
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Use a structure if:
It will act like a primitive type (int, long, byte, etc.).
It must have a small memory footprint.
You are calling a P/Invoke method that requires a structure to be passed in by
value.
You need to reduce the impact of garbage collection on application performance.
Its fields ne...