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Domain Driven Design: Domain Service, Application Service
...ot make it an application service. An application service is your domain's API. What if you wanted to reveal your domain to someone else writing an app, what will they use? Application Services, and they may not need caching so your caching impl is useless to them (ie.why it's infrastructure)
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How to get started on TDD with Ruby on Rails? [closed]
...ou write your application code. The cycle is generally write a test for an API that doesn't exist, run the test expecting it to fail, go write your API code, run your test again and make sure it passes. Then write your next test... and so on.
You might also be interested in this Rails guide.
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AngularJS : Prevent error $digest already in progress when calling $scope.$apply()
...is when writing angular services to wrap the facebook, google, and twitter APIs which, to varying degrees, have callbacks handed in.
Here's an example from within a service. (For the sake of brevity, the rest of the service -- that set up variables, injected $timeout etc. -- has been left off.)
wi...
How do I get the key at a specific index from a Dictionary in Swift?
...nce it didn't actually apply to the question.
– Rob Napier
Jul 8 '14 at 21:16
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Clicking a button within a form causes page refresh
...your <form> tag.
From the ngSubmit docs
http://docs.angularjs.org/api/ng.directive:ngSubmit
Enables binding angular expressions to onsubmit events.
Additionally it prevents the default action (which for form means sending the request to the server and reloading the current page). ...
CKEditor instance already exists
...(instance)" answer given below is not a good solution as it is an internal API that can also produce errors, it is always better to use instance.destroy(true)
– Bala Clark
May 14 '12 at 12:43
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Converting an object to a string
... both worlds! :)
Reference: https://developer.mozilla.org/en-US/docs/Web/API/Console.log
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Explain the use of a bit vector for determining if all characters are unique
...ly can be of different size or you should specify the size in constructor.
API. With bit vectors you will have easier to read code, probably something like this:
vector.SetFlag(4, true); // set flag at index 4 as true
for int you will have lower-level bit logic code:
checker |= (1 << 5); //...
How to construct a WebSocket URI relative to the page URI?
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Using the Window.URL API - https://developer.mozilla.org/en-US/docs/Web/API/Window/URL
Works with http(s), ports etc.
var url = new URL('/path/to/websocket', window.location.href);
url.protocol = url.protocol.replace('http', 'ws');
url.hre...
Need to ZIP an entire directory using Node.js
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Use Node's native child_process api to accomplish this.
No need for third party libs. Two lines of code.
const child_process = require("child_process");
child_process.execSync(`zip -r DESIRED_NAME_OF_ZIP_FILE_HERE *`, {
cwd: PATH_TO_FOLDER_YOU_WANT_ZIP...