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Can't use Swift classes inside Objective-C
...in your *.m file.
#import "myproject-Swift.h"
Don't pay attention to errors and warnings.
Clean and rebuild your Xcode project.
Profit!
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Use of def, val, and var in scala
...abels from def and val cannot be reassigned, and in case of any attempt an error like the below one will be raised:
scala> something = 5 * 6
<console>:8: error: value something_= is not a member of object $iw
something = 5 * 6
^
When the class is defined like:
scala> cl...
Difference between a theta join, equijoin and natural join
... whereas it makes nonsense and more is against business logic and leads to error. So yes, "natural join" is dangerous. It forces you to have distinct names except for (primary/foreign) key colulmns and lose "name spacing".
– LoganMzz
Nov 8 '16 at 13:31
...
fatal error: Python.h: No such file or directory
I am trying to build a shared library using a C extension file but first I have to generate the output file using the command below:
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What is the difference between “long”, “long long”, “long int”, and “long long int” in C++?
...ual ranges.
– chris
Sep 24 '13 at 2:05
The "int" part simply differentiates between an integer type and floating point...
Most Pythonic way to provide global configuration variables in config.py? [closed]
...in App.__setters:
App.__conf[name] = value
else:
raise NameError("Name not accepted in set() method")
And then usage is:
if __name__ == "__main__":
# from config import App
App.config("MYSQL_PORT") # return 3306
App.set("username", "hi") # set new username value
...
Remove not alphanumeric characters from string
...
@AD7six thank you for pointing out my error. When I copy pasted the input into WebStrom it automatically added 2 extra backslashes to each existing backslash. I failed to noitice this. input = "\\test\red\bob\fred\new" --> copy_paste = "\\\\test\\red\\bob\...
Creating a copy of a database in PostgreSQL [closed]
...TABASE newdb WITH TEMPLATE originaldb OWNER dbuser;
Still, you may get:
ERROR: source database "originaldb" is being accessed by other users
To disconnect all other users from the database, you can use this query:
SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity
WHERE ...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
... EntityManager.find() method?
EntityManager.getReference() is really an error prone method and there is really very few cases where a client code needs to use it.
Personally, I never needed to use it.
EntityManager.getReference() and EntityManager.find() : no difference in terms of overhead
...
How does an underscore in front of a variable in a cocoa objective-c class work?
...le use to differentiate member variables from local variables.
As for the error, it sounds like aMission has the wrong type. What it its declaration?
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