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Do declared properties require a corresponding instance variable?
... own getter/setter.
You can always override the auto-coded getter/setter by specifying your own. This is commonly done with the managedObjectContext property which is lazily loaded. Thus, you declare your managedObjectContext as a property, but then also write a -(NSManagedObjectContext *)managedO...
Javascript reduce on array of objects
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A cleaner way to accomplish this is by providing an initial value:
var arr = [{x:1}, {x:2}, {x:4}];
arr.reduce(function (acc, obj) { return acc + obj.x; }, 0); // 7
console.log(arr);
The first time the anonymous function is called, it gets called ...
Convert python datetime to epoch with strftime
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@earthmeLon Your bracketing is wrong. Timedeltas (made by subtracting two datetimes) have total_seconds, but datetimes do not.
– jleahy
Aug 21 '13 at 10:24
2
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Scanner is skipping nextLine() after using next() or nextFoo()?
...r.nextInt method does not read the newline character in your input created by hitting "Enter," and so the call to Scanner.nextLine returns after reading that newline.
You will encounter the similar behaviour when you use Scanner.nextLine after Scanner.next() or any Scanner.nextFoo method (except ne...
What is the Invariant Culture?
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Specifically, you won't be caught out by different uses of commas and points in the string forms of numbers, or with odd case conversions.
– Steve Gilham
Mar 11 '10 at 8:04
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'
...cesses", search and verify you see the process "mysqld".
You can start it by installing "MySQL.prefPane".
Here is the complete tutorial which helped me:
http://obscuredclarity.blogspot.in/2009/08/install-mysql-on-mac-os-x.html
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What is the purpose of Flask's context stacks?
... resolution is to push the application context yourself, which can be done by doing...
from myapp import app, db
# Set up models
with app.app_context():
db.create_all()
This will push a new application context (using the application of app, remember there could be more than one application)....
How to convert a normal Git repository to a bare one?
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But you can transfer config options easily by copying the respective parts of the config file. I'd still consider this method to be cleaner than copying and renaming files manually.
– Philipp
Jun 29 '10 at 9:50
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django : using select_related and get_object_or_404 together
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
MVC 4 @Scripts “does not exist”
....Web.Optimization from a blank ASP.NET MVC4 template as it is not included by default.
– Portman
Jul 18 '13 at 6:35
@P...