There is. Write this:

    &lt;li repeat.for=&quot;item of items&quot;&gt;${$index} - ${item}&lt;/li&gt;

Powershell&#39;s array notation has rather bizarre, albeit documented, behavior for slicing the end of arrays.  This section from [the official documentation](https://technet.microsoft.com/en-us/library/hh847882.aspx) sums up the bizarreness rather well:

&gt; Negative numbers count from the end of the array. For example, &quot;-1&quot; 
&gt; refers to the last element of the array. To display the last three
&gt; elements of the array, type:
&gt; 
&gt;     $a[-3..-1]
&gt; 
&gt; However, be cautious when using this notation.
&gt; 
&gt;     $a[0..-2]
&gt; 
&gt; This command does not refer to all the elements of the array, except
&gt; for  the last one. It refers to the first, last, and second-to-last
&gt; elements in the array.

The following code confirms the bizarreness:

    $a = 0,1,2,3
    $a[1..-1]

Which indeed outputs this bizarre result:

    1
    0
    3

So, the question is, what _is_ the idiomatic way to slice with one index relative the start and another relative the end of the array?  

Please tell me it&#39;s something better than this ugly mess:

    $a[1..($a.Count-1)]

------------

Edit:

Another way to describe what I&#39;m looking for is this: The idiomatic Powershell equivalent of this python expression:

    a=1,2,3,4
    a[1:-1]

Which, of course, evaluates to `(2,3)`

What is the idiomatic way to slice an array relative to both of its ends?

I have to install Android Studio on Ubuntu and I have used [this link][1] to download Android Studio.

Is there any easy way to install Studio on Ubuntu?


  [1]: https://developer.android.com/studio/index.html

How to install Android Studio on Ubuntu?

I have a simple repeat.for:

    &lt;li repeat.for=&quot;item of items&quot;&gt;${item}&lt;/li&gt;

Currently I&#39;m using: `${$parent.items.indexOf(item)}`.
Is there a shorthand, something like {{$index}} in angular?


Aurelia repeat.for access index of item

I have a simple repeat.for:
<pre><code class="hljs language-ini">&#x3C;li repeat.for="item of items">${item}&#x3C;/li>
</code></pre>
Currently I'm using: <code>${$parent.items.indexOf(item)}</code>.
Is there a shorthand, something like {{$index}} in angular?

When installing the Aurelia navigation skeleton app it is far to overwhelming with all the 3rd party modules and ready-made scripts it uses. For me who have a good picture of what most of it is in theory, have a hard time learning when I can&#39;t do it one step at a time. For this reason I would like to set up a minimal Aurelia project by myself and then add complexity to it as I go along. 

Main question: Which steps are necessary to set up a simple Aurelia project?

Assumptions:

* I already have a Node server backend that can serve files.
* I want to use ES6/7 (Babel).
* I want to use system.js for module loading.
* No unit or e2e tests, no styles, no docs.
* As few node and jspm modules as possible.

Please do also explain a little on each step and describe what the necessary Aurelia files is and does.

I would be very thankful for any help :)

How to set up minimal Aurelia project from scratch

I&#39;m trying to learn how to work with the Aurelia framework. In doing so, I was reading the documentation [here][1] regarding their method of binding events. The documentation suggests using delegate by default. I have forked the plunkr that they provided in one of their blog posts and added a little bit to it. The full plunk is [here][2].

---

**app.html**

&lt;!-- language: lang-html --&gt;

    &lt;template&gt;
        &lt;input value.bind=&quot;pageInput&quot; blur.delegate=&quot;showAlert()&quot; placeholder=&quot;delegate()&quot; /&gt;
        &lt;input value.bind=&quot;pageInput&quot; blur.trigger=&quot;showAlert()&quot; placeholder=&quot;trigger()&quot; /&gt;
        
        &lt;button type=&quot;button&quot; click.delegate=&quot;showAlert()&quot;&gt;delegate()&lt;/button&gt;
        &lt;button type=&quot;button&quot; click.trigger=&quot;showAlert()&quot;&gt;trigger()&lt;/button&gt;
    &lt;/template&gt;


---
**app.js**

&lt;!-- language: lang-js --&gt;

    export class App {
      showAlert() {
        alert(&#39;showAlert()&#39;);
      }
    }


---

As you can see in the plunkr, the *blur.trigger/click.delegate/click.trigger* all fire the event, but *blur.delegate* doesn&#39;t. 

**Why is this the case?**

**How can you determine when `.delegate` isn&#39;t going to work(without manually testing it of course)?**


  [1]: https://github.com/aurelia/documentation/blob/master/old/English/docs.md#event-modes
  [2]: http://plnkr.co/edit/2tAoMYAUnEfFQYkks0e8?p=preview

Aurelia delegate vs trigger: how do you know when to use delegate or trigger?

About two months ago we started using Rollbar to notify us of various errors in our Web App. Ever since then we have been getting the occasional error:

`ResizeObserver loop limit exceeded`

The thing that confuses me about this is that we are not using `ResizeObserver` and I have investigated the only plugin which I thought could possibly be the culprit, namely:

[Aurelia Resize][1]

But it doesn&#39;t appear to be using `ResizeObserver` either.

What is also confusing is that these error messages have been occuring since January but `ResizeObserver` support has only recently been added to Chrome 65.

The browser versions that have been giving us this error are:

 - Chrome: 63.0.3239 (ResizeObserver loop limit exceeded)
 - Chrome: 64.0.3282 (ResizeObserver loop limit exceeded)
 - Edge: 14.14393 (SecurityError)
 - Edge: 15.15063 (SecurityError)

So I was wondering if this could possibly be a browser bug? Or perhaps an error that actually has nothing to do with `ResizeObserver`?

  [1]: https://www.npmjs.com/package/aurelia-resize

Content Type	Original Author	Original Content on Stackoverflow
Question	bekite	View Question on Stackoverflow
Solution 1 - Aurelia	Matthew James Davis	View Answer on Stackoverflow

Aurelia repeat.for access index of item

Aurelia Problem Overview

Aurelia Solutions

Solution 1 - Aurelia

How to install Android Studio on Ubuntu?

What is the idiomatic way to slice an array relative to both of its ends?

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