Null array elements are hidden by default, you can disable it here:

[![hide null][1]][1]


  [1]: https://i.stack.imgur.com/lv7Bn.png

After looking at the documentation for the import/no-named-as-default eslint rule, I&#39;m still confused about what exactly I&#39;m doing wrong.

I have the following file structure

    .
    ├── ButtonBack.css
    ├── ButtonBack.jsx
    ├── __tests__
    │   └── ButtonBack.test.jsx
    └── index.js

The ButtonBack.jsx contains the following code

    import React from &#39;react&#39;;
    import PropTypes from &#39;prop-types&#39;;
    
    export default class ButtonBack extends React.Component {
      ... code removed to keep example short ...
    }

\__tests__/ButtonBack.test.jsx contains the following code

    import React from &#39;react&#39;;
    import { shallow } from &#39;enzyme&#39;;
    import ButtonBack from &#39;../ButtonBack&#39;; // &lt;== this line has an eslint warning

    ... code removed to keep example short ...

The problem is, my linter says that ```import ButtonBack from &#39;../ButtonBack``` violates the following lint rules:

 - [import/no-named-as-default][1]
 - [import/no-named-as-default-member][2]

    
I can&#39;t figure out why my import statement violates the lint rule.  Removing the name of the class in ButtonBack.jsx (```export default class extends React.Component```) does not solve the issue either.  


  [1]: https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-named-as-default.md
  [2]: https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-named-as-default-member.md

How do I resolve eslint import/no-named-as-default

I know that &#39;==&#39; doesn&#39;t work with values outside the range of [-128,127] as there is a cache maintained of Integer objects within this range and the same reference is returned if value is within the range. But why does &#39;&gt;&#39;, &#39;&lt;&#39;, &#39;&gt;=&#39;, &#39;&lt;=&#39; give correct answers even outside the range ?

    Integer a=150;
    Integer b=150;
    System.out.println(a==b); //returns false

    Integer a=150;
    Integer b=150;
    System.out.println(a&gt;=b); // returns true
Why is this happening ?

Why does &#39;&lt;&#39;, &#39;&gt; &#39; work with wrapper classes while &#39;==&#39; doesn&#39;t ?

I have a list in which the first element is `null`. IntelliJ debugger correctly shows the list size as 5, but it shows only 1,2,3,4 elements. It would be nice to see that element with the index 0 is `null` (it took me some time to figure out my problems while debugging because it did not show that). Is it possible to force IntelliJ to show this?

Here is a screenshot, where the size is 5 and the elements shown are only 1-4 because the first element is `null`:

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/5D9pC.png

IntelliJ IDEA Debugger does not show null element in a list

I have a list in which the first element is <code>null</code>. IntelliJ debugger correctly shows the list size as 5, but it shows only 1,2,3,4 elements. It would be nice to see that element with the index 0 is <code>null</code> (it took me some time to figure out my problems while debugging because it did not show that). Is it possible to force IntelliJ to show this?
Here is a screenshot, where the size is 5 and the elements shown are only 1-4 because the first element is <code>null</code>:
<a href="https://i.stack.imgur.com/5D9pC.png" target="_blank" rel="noopener noreferrer"><img src="https://i.stack.imgur.com/5D9pC.png" alt="enter image description here"></a>

How to enable &quot;Preserve Log&quot; in Network tools in Chrome developer tools by default? Everytime I press F12 and then select Network tab, I need to click preserve log checkbox to make it preserve request/responses. Is it possible to have it checked all the time by default?

[![enter image description here][1]][1]


By the way this feature works in &quot;Firefox Developer&quot; edition. When I click &quot;Persist Logs&quot; and close and then open the browser &amp; DEV tools window again, it is still checked.

[![enter image description here][2]][2]


# UPDATE - 6th March 2019

This will be fixed in Chrome 73. But if you want to try it before that then install **[Chrome Canary][3]**. It&#39;s working there. To enable/disable this persistence just go to [Dev tools settings][4] and check/uncheck Preserve Log under network section as shown below.

[![enter image description here][5]][5]

Thanks to the team for fixing it. Better late than never.


  [1]: https://i.stack.imgur.com/YC9dY.png
  [2]: https://i.stack.imgur.com/uZ6KP.png
  [3]: https://www.google.com/chrome/canary/
  [4]: https://developer.chrome.com/docs/devtools/customize/#settings
  [5]: https://i.stack.imgur.com/n6SfI.png

How to enable &quot;Preserve Log&quot; in Network tab in Chrome developer tools by default?

I just want to make VS Code&#39;s debugger work with webpack-dev-server without ignoring my breakpoints.

Now, webpack-dev-server serves the bundled files from memory, while, if I understand this correctly, the VS Code debugger searches for them on disk (...or not?...)

As a result, whenever I set a breakpoint I get the dreaded

`Breakpoint ignored because generated code not found (source map problem?)`

Now, every related question I could find had to do with typescript mostly, and not with the fact that webpack-dev-server serves from memory. I am not using typescript. Seems that people are either not using webpack-dev-server, or I am missing something blatantly obvious, with my money on the latter.

This is my VS Code `launch.json`


    {
      // Use IntelliSense to learn about possible attributes.
      // Hover to view descriptions of existing attributes.
      // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
      &quot;version&quot;: &quot;0.2.0&quot;,
      &quot;configurations&quot;: [
        {
          &quot;type&quot;: &quot;chrome&quot;,
          &quot;request&quot;: &quot;launch&quot;,
          &quot;name&quot;: &quot;Launch Chrome against localhost&quot;,
          &quot;url&quot;: &quot;http://localhost:8080&quot;,
          &quot;webRoot&quot;: &quot;${workspaceRoot}&quot;,
          &quot;sourceMaps&quot;: true,
          &quot;trace&quot;: true
        }
      ]
    }


and these are the related lines from my `webpack.config.js`


      devtool: &#39;cheap-module-source-map&#39;,
      output: {
        path: path.join(__dirname, &#39;dist&#39;),
        filename: &#39;[name].[chunkhash].js&#39;
      },


I have tried various modifications to the `launch.json` to no avail, so I am just pasting it in vanilla form. 

Note that the `output.path` is only used when there is a production build and the files are spewed to disk. 

Here is what the structure of the files is in the served page: 

[![enter image description here][1]][1]

And here is the command I am running in development

      &quot;scripts&quot;: {
        &quot;start&quot;: &quot;webpack-dev-server --host 0.0.0.0 --config ./webpack.config.js&quot;
      },

Finally, here is a relevant chunk from the trace file

    From target: {&quot;method&quot;:&quot;Debugger.scriptParsed&quot;,&quot;params&quot;:{&quot;scriptId&quot;:&quot;30&quot;,&quot;url&quot;:&quot;http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js&quot;,&quot;startLine&quot;:0,&quot;startColumn&quot;:0,&quot;endLine&quot;:150,&quot;endColumn&quot;:57,&quot;executionContextId&quot;:2,&quot;hash&quot;:&quot;216099518F33D6091EC12795265804FB35669A30&quot;,&quot;executionContextAuxData&quot;:{&quot;isDefault&quot;:true,&quot;frameId&quot;:&quot;18228.1&quot;},&quot;isLiveEdit&quot;:false,&quot;sourceMapURL&quot;:&quot;manifest.0ec68ebd5f0abf9b4cd4.js.map&quot;,&quot;hasSourceURL&quot;:false,&quot;isModule&quot;:false,&quot;length&quot;:5906}}
    Paths.scriptParsed: could not resolve http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js to a file under webRoot: e:\Mitch\Workspace\Projects\project-name. It may be external or served directly from the server&#39;s memory (and that&#39;s OK).
    SourceMaps.getMapForGeneratedPath: Finding SourceMap for http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js by URI: manifest.0ec68ebd5f0abf9b4cd4.js.map and webRoot: e:\Mitch\Workspace\Projects\project-name
    SourceMaps.loadSourceMapContents: Downloading sourcemap file from http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js.map
    To client: {&quot;seq&quot;:0,&quot;type&quot;:&quot;event&quot;,&quot;event&quot;:&quot;script&quot;,&quot;body&quot;:{&quot;reason&quot;:&quot;new&quot;,&quot;script&quot;:{&quot;id&quot;:1,&quot;source&quot;:{&quot;name&quot;:&quot;manifest.0ec68ebd5f0abf9b4cd4.js&quot;,&quot;path&quot;:&quot;http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js&quot;,&quot;sourceReference&quot;:1001}}}}
    To client: {&quot;seq&quot;:0,&quot;type&quot;:&quot;event&quot;,&quot;event&quot;:&quot;scriptLoaded&quot;,&quot;body&quot;:{&quot;path&quot;:&quot;http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js&quot;}}
    SourceMap: creating for http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js
    SourceMap: sourceRoot: 
    SourceMap: sources: [&quot;webpack:///webpack/bootstrap 7617f9bf7c8b0bc95159&quot;]
    SourceMap: webRoot: e:\Mitch\Workspace\Projects\project-name
    SourceMap: no sourceRoot specified, using webRoot + script path dirname: e:\Mitch\Workspace\Projects\project-name\
    SourceMap: mapping webpack:///webpack/bootstrap 7617f9bf7c8b0bc95159 =&gt; webpack\bootstrap 7617f9bf7c8b0bc95159, via sourceMapPathOverrides entry - &quot;webpack:///*&quot;: &quot;*&quot;
    SourceMaps.scriptParsed: http://localhost:8080/manifest.0ec68ebd5f0abf9b4cd4.js was just loaded and has mapped sources: [&quot;webpack\\bootstrap 7617f9bf7c8b0bc95159&quot;]


  [1]: https://i.stack.imgur.com/M8CQl.png

How to use VS Code debugger with webpack-dev-server (breakpoints ignored)

I have a gradle project, and when I put a breakpoint it is displayed as a red dot, with a tick inside, and it just works fine.

[![working breakpoint][1]][1]


The problem is that in some classes (in the same project, not a dependency class), the red dot doesn&#39;t have a tick inside, and it doesn&#39;t tell why it wouldn&#39;t work. And it just doesn&#39;t work..:


[![enter image description here][2]][2]

What have I tried so far:

 - Gradle clean &amp; build
 - Rebuild project
 - Restart debug
 - Invalidate caches and restart IntelliJ
 - Update IntelliJ to the latest version (2017.2.5)
 - Mute &amp; Unmute breakpoints


This question is similar, but clearly not the same: https://stackoverflow.com/questions/24612603/intellij-idea-breakpoint-not-being-hit-and-is-shown-greyed-out

  [1]: https://i.stack.imgur.com/5fuW6.png
  [2]: https://i.stack.imgur.com/wldt5.png

IntelliJ IDEA: Breakpoint not being hit, and is shown without the tick, just a red dot

How can I remove the debug banner in Flutter?

I am using `flutter screenshot` and I would like the screenshot not to have a banner. Now it does have.

Note that I get `not supported for emulator` message for profile and release mode.

How can I remove the Flutter debug banner?

I&#39;m looking for a way to execute code in Flutter when the app is in Debug mode. Is that possible in Flutter? I can&#39;t seem to find it anywhere in the documentation.

Something like this

    If(app.inDebugMode) {
       print(&quot;Print only in debug mode&quot;);
    }

How can I check if the Flutter application is running in debug or release mode?





How can I check if a Flutter application is running in debug?

In our git log we sometimes see an asterisk after the user name in the *Author* column. The same user is listed without the asterisk in other commits.

What does the asterisk stand for?

I&#39;m using IntelliJ IDEA 15.0.6.

IntelliJ IDEA - Asterisk after author&#39;s name in git log

Is it possible to change the max value of shown results in the &quot;find in path&quot; feature in intellij?
[![enter image description here][1]][1]

I sometimes wished that I would see more results. of course I would need to scroll much more, but that&#39;s what I want. Can I change that number 100 to like 200, 1000 or even maybe endless?

  [1]: https://i.stack.imgur.com/Ygbff.png

Can I adjust the &quot;100+ matches in X files&quot; from Intellijs &quot;find in path&quot;

Always when I use lambda expressions like this:

    .map(obj -&gt; foo.makeSomething(obj))

IntelliJ suggests: &quot;Can be replaced with method reference...&quot;. And when I try then:

    .map(Foo::makeSomething)

I get the following statement: &quot;Non-static method cannot be referenced from a static context&quot;. 

Why Idea suggests me I should use method reference if it&#39;s not correct?

Intellij - can be replaced with method reference

After updating to Intellij 2017.2, building my project creates an `/out` directory that contains generated source files and resource files. These files duplicate files that are already contained in `/build` and result in `duplicate class` compiler errors for the generated classes. Any ideas on a fix I need in Gradle or IntelliJ?

Building with Intellij 2017.2 /out directory duplicates files in /build directory

I recently installed version 2017.2 of IntelliJ IDEA. I would like to keep my settings from my old 2017.1 version. IntelliJ&#39;s [support site](https://www.jetbrains.com/help/idea/install-and-set-up-intellij-idea.html#r_Install_and_set_up__product_.xmld320216e288) shows the following dialog box that is supposed to show up when you run the newly installed version for the first time.

[![Complete Installation Dialog][1]][1]


  [1]: https://i.stack.imgur.com/gLJa2.png

However, neither when I was installing the new version, nor when I ran the new version for the first time, was I ever shown this dialog box. I attempted to import settings from my old version via  the `File | Import Settings` menu option, but it expects a `.jar` file that would have been exported from an old version by going to `File | Export Settings`, which I did not do in the old version before installing the new one.

I do still have all of the config from my old version in `%MY_HOME_DIR%/.IntelliJIdea2017.1`.
How can I import those settings in the same way that the above dialog box would have done had it shown up when I opened the new version for the first time?

Content Type	Original Author	Original Content on Stackoverflow
Question	jgr	View Question on Stackoverflow
Solution 1 - Debugging	CrazyCoder	View Answer on Stackoverflow

IntelliJ IDEA Debugger does not show null element in a list

Debugging Problem Overview

Debugging Solutions

Solution 1 - Debugging

Why does '<', '> ' work with wrapper classes while '==' doesn't ?

How do I resolve eslint import/no-named-as-default

Attributions