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Java abstract interface
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'----> nor this, are necessary.
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Interfaces and their methods are implicitly abstract and adding that modifier makes no difference.
Is there other rules that applies with an abstract interface?
No, same rules apply. The method must be implemented by any (concrete...
How to access the request body when POSTing using Node.js and Express?
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Express 4.0 and above:
$ npm install --save body-parser
And then in your node app:
const bodyParser = require('body-parser');
app.use(bodyParser);
Express 3.0 and below:
Try passing this in your cURL call:
--header "Content-Type...
Why use multiple columns as primary keys (composite primary key)
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Your understanding is correct.
You would do this in many cases. One example is in a relationship like OrderHeader and OrderDetail. The PK in OrderHeader might be OrderNumber. The PK in OrderDetail might be OrderNumber AND LineNumber. ...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
In case I do not care about the order of task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?):
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How to hide only the Close (x) button?
I have a modal dialog, and need to hide the Close (X) button, but I cannot use
ControlBox = false , because I need to keep the Minimize and Maximize buttons.
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How to prevent that the password to decrypt the private key has to be entered every time when using
...added: /c/Users/starmonkey/.ssh/id_dsa (/c/Users/starmonkey/.ssh/id_dsa)
And now I can ssh to other servers without logging in every time.
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What is “Linting”?
PHPLint , JSLint , and I recently came across "you can lint your JS code on the fly" while reading something about some IDE .
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Can I set variables to undefined or pass undefined as an argument?
I’m a bit confused about JavaScript’s undefined and null values.
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Allow anything through CORS Policy
How can I disable cors? For some reason I wild carded the allowed origins and headers yet my ajax requests still complain that the origin was not allowed by my CORS policy....
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Catch an exception thrown by an async void method
...ion of the call. */
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Async void methods have different error-handling semantics. When an exception is thrown out of an async Task or async Task method, that exception is captured and placed on the Task object. With async void methods, there is no Task object, so any exceptions thrown ou...