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Difference between the Facade, Proxy, Adapter and Decorator design patterns? [closed]
...oblem we are solving here is that of non-compatible interfaces.
Facade is more like a simple gateway to a complicated set of functionality. You make a black-box for your clients to worry less i.e. make interfaces simpler.
Proxy provides the same interface as the proxied-for class and typically doe...
Rails: create on has_one association
...
A more concise way to do this is with:
@user.create_shop(params[:shop])
See methods added by has_one in the Ruby on Rails guides.
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Validate uniqueness of multiple columns
... can pass multiple scope params in case you need to validate uniqueness on more than 2 fields. I.e. :scope => [:friend_id, :group_id]
– Dave Rapin
May 2 '11 at 16:36
27
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Is it possible to update a localized storyboard's strings?
...ings, you can copy and paste it to your original .strings file
Visit for more info: https://conyac.cc/business/columns/localization_guide_ios
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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
...erent screen sizes and resolutions. This gives good results, but it makes more work for developers. App Inventor uses a simpler approach, but that approach is more limited in terms of the kinds of apps it can handle.
1. Specifying sizes as percentages
There’s one important rule when using App I...
What is the easiest way in C# to trim a newline off of a string?
...\n intact in a string of HeresALineForUnixToBeFedFromWindows\n\r\n. While more verbose, John Skeet's answer is probably the best and Scott Weinstein's ReadLine is also more "accurate" (albeit maybe with a bit more overhead)
– b_levitt
Jan 14 '13 at 23:07
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How to understand Locality Sensitive Hashing?
...ts with their location respective to the planes. Imagine that when we have more planes in the pool, the angular difference encoded in the signature is closer to the actual difference. Because only planes that resides between the two points will give the two data different bit value.
Now we loo...
How to export data as CSV format from SQL Server using sqlcmd?
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This answer is now outdated. PowerShell scripts are more flexible and can be run in SQL Server as a Job Agent.
– Clinton Ward
May 24 '16 at 2:45
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How can I put strings in an array, split by new line?
..., so \n is actually interpreted as a line-break.
(See that manual page for more details.)
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AngularJS: Service vs provider vs factory
...actory function can ask for other dependencies.
But what if you want to be more OO and have a class called Greeter?
function Greeter(a) {
this.greet = function() {
return 'Hello ' + a;
}
}
Then to instantiate you would have to write
provide.factory('greeter', function(a) {
return new Gree...