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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...ter_initialize couldn't easily be moved to before_validation, before_save, etc. Chances are that eventually one of the devs on your team will execute something like MyModel.all.each perhaps for bulk processing of some kind, and thus run this initialization logic MyModel.count num of times.
...
Legality of COW std::string implementation in C++11
...st silly that a std::cow_string class wasn't included, with lock_buffer(), etc. there are lots of times i know threading isn't an issue. more often than not, actually.
– Erik Aronesty
Apr 16 '15 at 20:47
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Eclipse java debugging: source not found
...ample.
Classes, from dependencies coming from another plugins (maven, PDE, etc.). In this case, it is up to the plugin how the source will be provided.
PDE will require that each plugin have corresponding XXX.source bundle, which contains the source of the plugin. More information can be found her...
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?
... out. Note I also needed to adjust the timeout period from 500 to 100 in order for this to work on an iPhone 4S. Test and tweak to get it right for your situation.
<html>
<head>
<meta name="viewport" content="width=device-width" />
</head>
<body>
<script type...
Find number of months between two Dates in Ruby on Rails
... less than a year apart, but it will fail if the two months are in reverse order (e.g. October - December) or if the two months are more than a year apart.
– elreimundo
Jan 9 '15 at 18:37
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Converting integer to string in Python
...to
a.__str__()
The same if you want to convert something to int, float, etc.
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How to fix 'android.os.NetworkOnMainThreadException'?
...eak when executed concurrently on Gingerbread, say if you have inadvertent order-of-execution dependencies.
If you want to avoid short-term memory leaks, have well-defined execution characteristics across all platforms, and have a base to build really robust network handling, you might want to con...
What is the difference between synchronous and asynchronous programming (in node.js)
...he next statement is run. In this case the program is evaluated exactly in order of the statements.
This is how asynchronous works in JavaScript. There are two parts in the JavaScript engine, one part that looks at the code and enqueues operations and another that processes the queue. The queue pro...
Using property() on classmethods
...s of Foo gets its own.
Lookups should follow the method resolution order.
"""
return cls._bar
@bar.setter
def bar(cls, value):
cls._bar = value
@bar.deleter
def bar(cls):
del cls._bar
And this code should work without errors:
def main():
f...
How do I drop a foreign key constraint only if it exists in sql server?
...you need to put brackets around the names like this [dbo].[FK_dbo.MyTable_Etc]
– David Sopko
Nov 19 '15 at 17:02
In M...