    moment().subtract(1,&#39;days&#39;).startOf(&#39;day&#39;).toString()

&gt; &quot;Thu Jul 30 2015 00:00:00 GMT-0600&quot;

    moment().subtract(1,&#39;days&#39;).endOf(&#39;day&#39;).toString()

&gt; &quot;Thu Jul 30 2015 23:59:59 GMT-0600&quot;

I would like to be able to know the actual size of a network-loaded image that has been passed into `&lt;Image /&gt;` I have tried using `onLayout` to work out the size (as taken from here https://github.com/facebook/react-native/issues/858) but that seems to return the sanitised size after it&#39;s already been pushed through the layout engine.

I tried looking into onLoadStart, onLoad, onLoadEnd, onProgress to see if there was any other information available but cannot seem to get any of these to fire. I have declared them as follows:

      onImageLoadStart: function(e){
        console.log(&quot;onImageLoadStart&quot;);
      },
    
      onImageLoad: function(e){
        console.log(&quot;onImageLoad&quot;);
      },
    
      onImageLoadEnd: function(e){
        console.log(&quot;onImageLoadEnd&quot;);
      },
    
    
      onImageProgress: function(e){
        console.log(&quot;onImageProgress&quot;);
      },
    
      onImageError: function(e){
        console.log(&quot;onImageError&quot;);
      },
    
      render: function (e) {
        return (
          &lt;Image
            source={{uri: &quot;http://adomain.com/myimageurl.jpg&quot;}}
            style={[this.props.style, this.state.style]}
            onLayout={this.onImageLayout}
            onLoadStart={(e) =&gt; {this.onImageLoadStart(e)}}
            onLoad={(e) =&gt; {this.onImageLoad(e)}}
            onLoadEnd={(e) =&gt; {this.onImageLoadEnd(e)}}
            onProgress={(e) =&gt; {this.onImageProgress(e)}}
            onError={(e) =&gt; {this.onImageError(e)}} /&gt;
        );
      }

Thanks.

React Native Retrieve Actual Image Sizes

I Ubuntu, I am learning about cmake and make, and just trying a simple example. I have two directories: `src` and `build`. In `src`, I have two files: `main.cpp`, and `CMakeLists.txt`, which has (only) the following text:

    add_executable(test main.cpp)
    link_directories(/usr/lib/x86_64-linux-gnu)
    target_link_libraries(test protobuf)

In `/usr/lib/x86_64-linux-gnu`, there is a shared library called `libprotobuf.so`, which I want to link against. My `main.cpp` uses functions in this library, by including the releveant header file, `#include &lt;google/protobuf/message.h&gt;`.


Now, in my `build` directory, I run `cmake ../src`, and then `make`. However, I then get linker errors telling me that there are undefined references to some of the functions in the protobuf library. If I do a search through all the files and subdirectories in `build`, there is not mention of anything related to protobuf.

However, if I remove the `link_directories` line in my `CMakeLists.txt` file, and instead write the full path to the library when specifying the executable, i.e. `target_link_libraries(test /usr/lib/x86_64-linux-gnu/libprotobuf.so)`, it compiles and links fine.

Why is `link_directories` not allowing cmake to find this library?

Cmake cannot find library using &quot;link_directories&quot;

How can I get the time range for yesterday from midnight until midnight:

Example:

Yesterday 22.07.2015

Result:

22.07.2015 00:00:00 (AM)

22.07.2015 23:59:59 (PM)

Date format doesn&#39;t matter this is just an example.

moment.js get yesterday time range from midnight to midnight

How can I get the time range for yesterday from midnight until midnight:
Example:
Yesterday 22.07.2015
Result:
22.07.2015 00:00:00 (AM)
22.07.2015 23:59:59 (PM)
Date format doesn't matter this is just an example.

Im experimenting with ES6, and Im using gulp to build and babel to transpile to ES5. The output is not being run in node, just linked to from a .htm file with a &lt;script&gt; tag. Im thinking I need to add 

    &lt;script src=&#39;require.js&#39;&gt;&lt;/script&gt;

or something like that.

Im trying to import / export.

    ////////////////scripts.js
    import {Circle} from &#39;shapes&#39;;

    c = new Circle(4);

    console.log(c.area());


    /////////////////shapes.js
    export class Circle {

    	circle(radius) {
	    	this.radius = radius;
    	}

    	area() {
	    	return this.radius * this.radius * Math.PI;
    	} 

    }


Error is 
  
    Uncaught ReferenceError: require is not defined

Refers to this (after .pipe(babel()) in gulp)

    var _shapes = require(&#39;shapes&#39;);


    

Do I need require js when I use babel?

C# 6.0 has just been released and has a new nice little feature that I&#39;d really like to use in JavaScript. They&#39;re called [Null-conditional operators][1]. These use a `?.` or `?[]` syntax.

What these do is essentially allow you to check that the object you&#39;ve got isn&#39;t `null`, before trying to access a property. If the object is `null`, then you&#39;ll get `null` as the result of your property access instead.

    int? length = customers?.Length;

So here `int` can be null, and will take that value if `customers` is null. What is even better is that you can chain these:

    int? length = customers?.orders?.Length;

I don&#39;t believe we can do this in JavaScript, but I&#39;m wondering what&#39;s the neatest way of doing something similar. Generally I find chaining `if` blocks difficult to read:

    var length = null;
    if(customers &amp;&amp; customers.orders) {
        length = customers.orders.length;
    }


  [1]: https://github.com/dotnet/roslyn/wiki/New-Language-Features-in-C%23-6#null-conditional-operators

Null Conditional Operators

There are numerous online resources which provide JavaScript APIs to access their services. To be more clear, I will base my question on the example of [MapBox][1], but this applies well to many other services in various domains.

When someone wants to use such a service in a web application (like the map imagery from MapBox for example), they typically need to Register/Sign Up and obtain an **access token** to access the service. 

Now, if I would use the API from the server side - there is no issue: I know my token is stored securely somewhere on the server and is only exposed upon communication between my server and the service provider, which is OK as long it is HTTP**S**. However, in case of a JavaScript API (for example if I use [Leaflet][2] to render a map from MapBox), I am supposed to have **my access token** in a JavaScript which is exposed to the user&#39;s web browser - and so it makes it extremely easy to find someone&#39;s access token. My users, or in a case of a public service, literally anyone, would be able to find the token in the browser&#39;s &quot;Dev Tools&quot;. 

This token however, as for me, should be considered as a sensetive data - service usage is tracked based on the authentication this token provides. If you pay for the service based on its usage it becomes critical, but even if you don&#39;t (like, if you use a Free/Starter/Non Paid plan) - service usage is limited and I&#39;d like to be sure it is only me who uses it. 

Is my only option a proxy via my own web server?

Is there a way to secure the access token used by a JavaScript API to access an external service, provided that JavaScript is executed in a user&#39;s browser?


  [1]: http://www.mapbox.com
  [2]: http://leafletjs.com/

How to secure the JavaScript API Access Token?

I&#39;m attempting to use the ESLint linter with the Jest testing framework.  

Jest tests run with some globals like `jest`, which I&#39;ll need to tell the linter about; but the tricky thing is the directory structure, with Jest the tests are embedded with the source code in `__tests__` folders, so the directory structure looks something like:

    src
        foo
            foo.js
            __tests__
                fooTest.js
        bar
            bar.js
            __tests__
                barTest.js

Normally, I&#39;d have all my tests under a single dir, and I could just add an `.eslintrc` file there to add the globals... but I certainly don&#39;t want to add a `.eslintrc` file to every single `__test__` dir.  

For now, I&#39;ve just added the test globals to the global `.eslintrc` file, but since that means I could now reference `jest` in non-testing code, that doesn&#39;t seem like the &quot;right&quot; solution.  

Is there a way to get eslint to apply rules based on some pattern based on the directory name, or something like that?

How to use ESLint with Jest

Is it possible using [Chart.js][1] to display data values?

I want to print the graph.

Thanks for any advice..

  [1]: http://www.chartjs.org/


How to display data values on Chart.js

I&#39;m trying to convert UTC time to the local time. I&#39;ve been following this example from this link: http://jsfiddle.net/FLhpq/4/light/. I can&#39;t seem to get the right local output. For example, if its 10: 30 am in here, instead of getting 10:30 ill get 15: 30. Here is my code:

    var date = moment.utc().format(&#39;YYYY-MM-DD HH:mm:ss&#39;);
    
    var localTime  = moment.utc(date).toDate();
    
    localTime = moment(localTime).format(&#39;YYYY-MM-DD HH:mm:ss&#39;);
    
    console.log(&quot;moment: &quot; + localTime);

No matter what I do the time always comes out at UTC time. I live in Houston so I know timezone is the issue. I&#39;ve followed the code in the link but can seem to get the local time. What am I doing wrong?

Moment Js UTC to Local Time

Angular material introduced a new date picker component found [here][1].

I want the date returned by this component to be in the format *yyy-mm-dd* but I am not sure how is this done. By searching I found that `$mdDateLocaleProvider` can be used, but I could not find an example of using it.

Can someone show me a working example of formatting the date returned by `md-datepicker`?

  [1]: https://material.angularjs.org/HEAD/#/demo/material.components.datepicker

Change format of md-datepicker in Angular Material with momentjs

I read the documentation of moment.js that if you want to add 1 month from the current date time you use this code

    var moment = require(&#39;moment&#39;);
    var futureMonth = moment().add(1, &#39;M&#39;).format(&#39;DD-MM-YYYY&#39;);
    
But the problem right now, it is not properly add the date correctly, for example
let say the current date is 31/10/2015, explain in code

    var currentDate = moment().format(&#39;DD-MM-YYYY&#39;);
    var futureMonth = moment().add(1, &#39;M&#39;).format(&#39;DD-MM-YYYY&#39;);

    console.log(currentDate) //  Will result --&gt; 31/10/2015
    console.log(futureMonth) //  Will result --&gt; 30/11/2015 

if you take a look at the current calendar time, 1 month from `31/10/2015` supposed to be `1/12/2015`
    
Could anyone give me some opinion on how to fix this problem.

Thank you


How to properly add 1 month from now to current date in moment.js

I&#39;m using [datetimepicker.js](https://eonasdan.github.io/bootstrap-datetimepicker/Functions/#date) and its `date` function returns a [moment.js](http://momentjs.com/) object. It does so with the local UTC offset in it and my original date has a different offset.

My original date:

    2015-10-01T15:00:00.000Z

What I display on the date time picker (`DD-MM HH:mm`):

    01-10 15:00


What I get:
   
    2015-10-01T15:40:00+01:00

What I want:

    2015-10-01T15:40:00+00:00

Note how I removed the +01 offset at the end.

How can I do this applying it for any local UTC ? This is, without having to manually remove the 01 (as it can be a any other local offset depending on the user location).


    var momentDate = timePicker.data(&quot;DateTimePicker&quot;).date();
    console.log(momentDate.format());
    //this prints  2015-10-01T15:40:00+01:00


 

Remove timezone from a moment.js object

I try to print out date time using like the following in `vue-for`

```js
{{ moment().format(&#39;MMMM Do YYYY, h:mm:ss a&#39;) }}
```

but, it does not appear. It&#39;s just a blank. How I can try to use moment in vue?

Content Type	Original Author	Original Content on Stackoverflow
Question	user2818430	View Question on Stackoverflow
Solution 1 - Javascript	Jason H	View Answer on Stackoverflow

moment.js get yesterday time range from midnight to midnight

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Cmake cannot find library using "link_directories"

React Native Retrieve Actual Image Sizes

Attributions