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Validate uniqueness of multiple columns
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You can scope a validates_uniqueness_of call as follows.
validates_uniqueness_of :user_id, :scope => :friend_id
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cURL equivalent in Node.js?
I'm looking to use information from an HTTP request using Node.js (i.e. call a remote web service and echo the response to the client).
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How to Create Deterministic Guids
... it generates a hash that looks like a UUID.
The RFC 4122 on UUIDs specifically allows for deterministic (name-based) UUIDs - Versions 3 and 5 use md5 and SHA1(respectively). Most people are probably familiar with version 4, which is random. Wikipedia gives a good overview of the versions. (Note th...
How to export all data from table to an insertable sql format?
I have a Table (call it A_table ) in a database (call it A_db ) in Microsoft SQL Server Management Studio, and there are 10 rows.
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The ViewData item that has the key 'MY KEY' is of type 'System.String' but must be of type 'IEnumera
...m in place for composing my view models, but I had completely forgotten to call it. Thus, the property wasn't populated and I received this (rather ambiguous) message no matter what I tried.
– Tim Medora
Dec 25 '12 at 6:05
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How to do a Jquery Callback after form submit?
... Didn´t work form me, using normal Form, with a button, but the button calls javascript $('#formFile').submit();
– Daniel
Feb 6 '15 at 20:02
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Correct use for angular-translate in controllers
...e loaded. Personally I would even recommend not loading translations dynamically if you don't have to. It's a mandatory part of your application, so you better don't want the user to be waiting for it. But that's a personal opinion.
– Robin van Baalen
Jul 7 '15...
Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...html");
}
private void testMethod(WebView webView) {
String call = "javascript：sayHello()";
call = "javascript：alertMessage(\"" + "content" + "\")";
call = "javascript：toastMessage(\"" + "content" + "\")";
call = "javascript：sumToJava(1,2)";
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event Action vs event EventHandler
...n<T1, T2, T2... > will prevent you from passing feedback BACK to the calling method unless you have a some kind of object (with a Handled property for instance) that is passed along with the Action. Third, you don't get named parameters, so if you're passing 3 bool's an int, two string's, and ...
Section vs Article HTML5
...e, independent content INSIDE the document (and thus its sections). Semantically the term "section" just makes more sense as a replacement for the old div sections anyway. Good job!
– Stokely
Aug 10 '17 at 17:50
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