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how do I check in bash whether a file was created more than x time ago?
... function file-age { FILE_CREATED_TIME=`date -r "$1" +%s`; TIME_NOW=`date +%s`; echo "$[ ${TIME_NOW} - ${FILE_CREATED_TIME} ]"; }
– turiyag
Apr 28 '18 at 18:50
...
Stashing only staged changes in git - is it possible?
...king directory (still in state staged).
Run git stash push -m "good stash"
Now your "good stash" has ONLY staged files.
Now if you need unstaged files before stash, simply apply first stash (the one created with --keep-index) and now you can remove files you stashed to "good stash".
Enjoy
...
What's the best way to communicate between view controllers?
...the book data? Let's say it depends on a BookWarehouse object for that. So now your controller is basically brokering data between a model object (BookWarehouse) and the GUI/view objects. In other words, BookPickerViewController DEPENDS on the BookWarehouse object.
Don't do this:
@implementation B...
Return array in a function
...his example also modifies the parameter list by adding the const keyword. Now you get a reference without copying it, but you can't modify it, so the caller knows it'll be the same as before the function got to it.
All of this is swell, but idiomatic c++ rarely works with collections as a whole....
Xcode 4.5 Storyboard 'Exit'
...o mention that this screen was
// returned to from a later screen.
}
Now, within your storyboard, control drag from an element on Z (IE, a cancel button) to Z's Exit. It'll scan through all of the views higher up in the view hierarchy which have an IBAction that accepts only a single UIStorybo...
Importing a Swift protocol in Objective-C class
...in the objC header file, like this:
@protocol AnalyticProtocol;
You can now use the protocol in your objC class declaration:
@interface AnalyticFactory : NSObject
{
Class<AnalyticProtocol> _analyticProtocolClass; // The type of the analytic class currently used.
}
In your implementat...
How to create a DataTable in C# and how to add rows?
...
I now see elsewhere on this page that @rahul mentions this in his answer as well.
– Funka
Jan 29 '13 at 19:37
...
rails - Devise - Handling - devise_error_messages
...e method, effectively overriding the default implementation. I'll let you know how it goes.
Update
Yep, that works. I created app/helpers/devise_helper.rb and overrode it like so:
module DeviseHelper
def devise_error_messages!
'KABOOM!'
end
end
So knowing this, I can modify the method t...
Is it possible to have nested templates in Go using the standard library?
... = template.Must(template.ParseFiles("other.html", "base.html"))
You can now render your "index.html" page by calling
tmpl["index.html"].Execute("base", data)
and you can render your "other.html" page by calling
tmpl["other.html"].Execute("base", data)
With some tricks (e.g. a consistent na...
Regular expression for floating point numbers
...tion.)
That said, most regex engines (actually, all of them, as far as I know) would accept \.. Most likely, there's an issue with escaping.
The Trouble with Escaping
Some languages have built-in support for regexes, such as JavaScript. For those languages that don't, escaping can be a problem.
...