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Where do I use delegates? [closed]
What are some real world places that call for delegates? I'm curious what situations or patterns are present where this method is the best solution. No code required.
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Table Header Views in StoryBoards
...when I had moved the view out of the regular hierarchy first; I dragged it all the way to the bottom of the outline for that scene. Then, in a 2nd step, I could move it onto the table view.
– Daniel Schneller
Sep 23 '13 at 20:00
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How to force a WPF binding to refresh?
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if you use mvvm and your itemssource is located in your vm. just call INotifyPropertyChanged for your collection property when you want to refresh.
OnPropertyChanged("YourCollectionProperty");
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How to compare type of an object in Python?
Basically I want to do this:
14 Answers
14
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Git keeps asking me for my ssh key passphrase
...-add
This will ask you your passphrase just once, and then you should be allowed to push, provided that you uploaded the public key to Github.
To save key permanently on macOS:
ssh-add -K
This will persist it after you close and re-open it by storing it in user's keychain.
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Abstract classes in Swift Language
... importantly, notice that there is no dynamic dispatch. When logSalary is called on the instance that is stored as a SoftwareEngineer it calls the overridden version of the method. When logSalary is called on the instance after it has been cast to an Employee, it calls the original implementation (i...
How do you display code snippets in MS Word preserving format and syntax highlighting?
... Please note tath this requires open/libre office to be installed on your machine.
– BetaRide
Oct 10 '13 at 6:06
16
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Undefined symbols for architecture armv7
... header and do not link against the correct library. This is common, especially for headers for libraries like QuartzCore since it is not included in projects by default. To resolve:
Add the correct libraries in the Link Binary With Libraries section of the Build Phases.
If you want to add a libra...
Mimicking sets in JavaScript?
...the list is a little safer with this:
if (Object.prototype.hasOwnProperty.call(obj, A))
// put code here
}
because of potential conflict between built-in methods and/or properties on the base Object like the constructor property.
Sidebar on ES6: The current working version of ECMAScript 6 or s...
Rails I18n validation deprecation warning
... dont works.
– Pioz
Dec 5 '13 at 13:32
1
@Pioz It may be caused by the gems your application depe...