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Rails - Nested includes on Active Records?
...ose magical answers that I have found multiple times years apart and saves my ass every time. This is what the docs should look like
– Andrew
May 31 '18 at 11:33
2
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I need to store postal codes in a database. How big should the column be?
I expect the column to be a VARCHAR2, in my Oracle Database.
8 Answers
8
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Checking if a folder exists (and creating folders) in Qt, C++
...der" exists use:
QDir("Folder").exists();
To create a new folder named "MyFolder" use:
QDir().mkdir("MyFolder");
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Pass variables to Ruby script via command line
... can talk to you. Run it when you are lonely.
# Written in Ruby.
class MyClass
def initialize
@hello_msg = 'Hello'
@bye_msg = 'Good Bye'
end
# @runnable Say 'Hello' to you.
# @param [String] name Your name
# @param [Hash] options options
# @option options ...
Java Enum Methods - return opposite direction enum
...ntactically correct, i.e, enums cannot be instantiated, but it illustrates my point). Is this possible in Java?
6 Answers
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How to specify an element after which to wrap in css flexbox? [duplicate]
...nnoying, of course, since working with the Firefox implementation confirms my suspicion that the functionality is incredibly useful. Aside from the improved vertical alignment, the lack obviates a good deal of the utility of flex layout in numerous scenarios. Having to add additional wrapping tags ...
What is a clean, pythonic way to have multiple constructors in Python?
...ructor argument, and the constructors do not share code.
Example:
class MyClass(set):
def __init__(self, filename):
self._value = load_from_file(filename)
@classmethod
def from_somewhere(cls, somename):
obj = cls.__new__(cls) # Does not call __init__
super(M...
In Gradle, is there a better way to get Environment Variables?
In several Tasks, I reference jars in my home folder.
3 Answers
3
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Is there a destructor for Java?
...he garbage collector to collect them,
wouldn't there be a memory leak if my
user repeatedly entered data and
pressed the reset button?
Generally, all you need to do is dereference the objects - at least, this is the way it is supposed to work. If you are worried about garbage collection, che...
How to initialize all members of an array to the same value?
...), there's no easy way.
Don't overlook the obvious solution, though:
int myArray[10] = { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 };
Elements with missing values will be initialized to 0:
int myArray[10] = { 1, 2 }; // initialize to 1,2,0,0,0...
So this will initialize all elements to 0:
int myArray[10]...