Seems like there is an UI-Bug in the Android Studio (1.x, 2.x and 3.x).

For me the &quot;Frames/Threads&quot; Panel was completely hidden behind the toolbar, so I had to change the size from the &quot;variable&quot; panel by dragging its left border to reveal the &quot;Frames/Threads&quot;. 

[![Example][1]][1]

[I have to admit, that **@Greg added this picture** after reviewing my answer!]

  [1]: http://i.stack.imgur.com/ICbGD.png

At the bottom panel you should have &quot;5: Debug&quot;. Click on it and select &quot;Debugger -&gt; Threads&quot;

You may need to find the &quot;Threads&quot; icon on the far right, or even click the &quot;Restore Layout&quot; button on the left to restore this window.

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/clCXa.png

We use Spring Boot/MVC with annotation-based java-config for series of RESTful services and we want to selectively enable HTTP GZIP stream compression on some API responses.

I know I can do this manually in my controller and a `byte[] @ResponseBody`, however we&#39;d prefer to rely on the Spring MVC infrastructure (filters/etc) and have it automatically do the JSON conversion and compression (i.e. the method returns a POJO).

How can I enable GZIP compression in the ResponseBody or embedded Tomcat instance, and in a way we can selectively compress only some responses?

We don&#39;t currently have any XML based configuration.

Using GZIP compression with Spring Boot/MVC/JavaConfig with RESTful

I have the following: [FIDDLE][1]

The placeholder works fine and dandy until you type something, &lt;kbd&gt;ctrl&lt;/kbd&gt; + &lt;kbd&gt;A&lt;/kbd&gt;, and &lt;kbd&gt;delete&lt;/kbd&gt;. If you do that, the placeholder disappears and never shows up again.

What&#39;s wrong? How can I have a placeholder for a contenteditable div?

__HTML:__

    &lt;div class=&quot;test&quot; placeholder=&quot;Type something...&quot; contenteditable=&quot;true&quot;&gt;&lt;/div&gt;
&lt;hr/&gt;
__CSS:__

    .test {
        width: 500px;
        height: 70px;
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 5px;
    }
    
    .test[placeholder]:empty:before {
        content: attr(placeholder);
        color: #555; 
    }
&lt;hr/&gt;
Thanks.


  [1]: http://jsfiddle.net/RZZ6X/

Placeholder for contenteditable div

While on a break point, how do I see the call stack to find the callee method/function?

Android Studio - Where can I see callstack while debugging an android app?

<p>While on a break point, how do I see the call stack to find the callee method/function?</p>


I have an Android project that has been developed entirely within Android Studio (currently version 4.2, gradle version 1.9-all). I want to add functionality from Google Play Services.

The project is unable to resolve `GooglePlayServicesUtil`, and when I enter the import manually (shown below), I get `Cannot resolve symbol &#39;common&#39;`.

    import com.google.android.gms.common.GooglePlayServicesUtil;

Any idea what I need to do to get `GooglePlayServicesUtil` to resolve?

## What I&#39;ve Tried
From the [Google Play Services Setup](http://developer.android.com/google/play-services/setup.html) it looks like I just have to add the `com.google.android.gms:play-services:4.+` dependency to my `build.gradle` file (and resync project files with gradle) to make the SDK available to my project. I do get an &quot;exploded bundle&quot; in `ProjectName/module/build/exploded-bundles`, but that doesn&#39;t seem like it does the trick.

I have Google Play Services, Android Support Repository and Google Repository installed from the SDK Manager already. I&#39;ve also deleted and reinstalled them multiple times :)

Edit:

Might I need to manually add google_play_services as a Project/Global Library? I&#39;ve attempted with no success.

I&#39;m trying to verify that I&#39;m developing against the Platform API with Google Services (if that&#39;s even possible), but I&#39;m not sure that&#39;s the case. Nothing I change seems to do anything.

The External Libraries of my project shows:

* &lt; Android API 19 Platform &gt;
* &lt; 1.7 &gt;
* joda-time-2.3
* support-v4-13.0.0

## Source Code

This is my ProjectName/module/build.gradle file:

    buildscript {
        repositories {
            mavenCentral()
        }
        dependencies {
            classpath &#39;com.android.tools.build:gradle:0.7.+&#39;
        }
    }

    apply plugin: &#39;android&#39;

    repositories {
        mavenCentral()
    }

    android {
        compileSdkVersion 19
        buildToolsVersion &#39;19.0.1&#39;
        defaultConfig {
            minSdkVersion 17
            targetSdkVersion 19
            versionCode 1
            versionName &quot;1.0&quot;
        }
        buildTypes {
            release {
                runProguard true
                proguardFiles getDefaultProguardFile(&#39;proguard-android.txt&#39;), &#39;proguard-rules.txt&#39;
            }
        }
        signingConfigs {
        }
        productFlavors {
        }
    }

    dependencies {
        compile &#39;com.google.android.gms:play-services:4.+&#39;
        compile &#39;joda-time:joda-time:2.3@jar&#39;
    }

The `com.google.android.gms.version` number resolves fine in my manifest. Here is my ProjectName/module/src/main/AndroidManifest.xml file:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        package=&quot;com.example.android&quot; &gt;

        &lt;uses-sdk android:minSdkVersion=&quot;17&quot; android:targetSdkVersion=&quot;19&quot;/&gt;

        &lt;application
            android:allowBackup=&quot;true&quot;
            android:icon=&quot;@drawable/ic_launcher&quot;
            android:label=&quot;@string/app_name&quot;
            android:theme=&quot;@style/AppTheme&quot; &gt;
            &lt;activity
                android:name=&quot;com.example.android.MainActivity&quot;
                android:label=&quot;@string/app_name&quot; &gt;
                &lt;intent-filter&gt;
                    &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;

                    &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
                &lt;/intent-filter&gt;
            &lt;/activity&gt;
            &lt;activity android:name=&quot;.SecondActivity&quot;/&gt;

            &lt;meta-data android:name=&quot;com.google.android.gms.version&quot;
                android:value=&quot;@integer/google_play_services_version&quot; /&gt;

            &lt;provider
                android:name=&quot;.DataProvider&quot;
                android:authorities=&quot;com.example.android.provider&quot; &gt;
            &lt;/provider&gt;

            &lt;receiver android:name=&quot;.WidgetProvider&quot; &gt;
                &lt;intent-filter&gt;
                    &lt;action android:name=&quot;android.appwidget.action.APPWIDGET_UPDATE&quot; /&gt;
                &lt;/intent-filter&gt;
                &lt;meta-data android:name=&quot;android.appwidget.provider&quot;
                       android:resource=&quot;@xml/widget_info&quot; /&gt;
            &lt;/receiver&gt;

            &lt;service android:name=&quot;.DatabaseService&quot; /&gt;
            &lt;service android:name=&quot;.WidgetProvider$UpdateService&quot; /&gt;
        &lt;/application&gt;

    &lt;/manifest&gt;

Here is my MainActivity, where I&#39;m trying to check whether GooglePlayServices is Available:

    package com.example.android;

    import android.app.Activity;
    import android.os.Bundle;
    import android.util.Log;

    import com.google.android.gms.common.GooglePlayServicesUtil;

    public class MainActivity extends Activity {
        private static final String TAG = &quot;MainActivity&quot;;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
        }

        @Override
        public void onResume() {
            Log.i(TAG, &quot;onResume&quot;);
            GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
        }
    }


Import Google Play Services library in Android Studio

Using adb, how can I find out the which permissions an Android application requires?

Because I want to display the permissions of multiple applications on different devices, viewing them in `Google Play` or `Settings` &gt; `Applications manager` requires too much manual work.

Listing permissions of Android application via adb

I have problems with the translucent actionbar/navbar in the new _Android KitKat_ (4.4) and the `windowSoftInputMode=&quot;adjustResize&quot;`.

Normaly, changing the _InputMode_ to `adjustResize`, the app should resize itself when keyboard is shown, but here it won&#39;t! If I delete the lines for the transparent effect, the resize is working.

So if the keyboard is visible, my `ListView` is under it and I can&#39;t access the last few items (only by hiding the keyboard manually).

`AndroidManifest.xml`:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    package=&quot;XYZ&quot;
    android:versionCode=&quot;23&quot;
    android:versionName=&quot;0.1&quot; &gt;

    &lt;uses-sdk
        android:minSdkVersion=&quot;9&quot;
        android:targetSdkVersion=&quot;19&quot; /&gt;

    &lt;application
        android:allowBackup=&quot;true&quot;
        android:icon=&quot;@drawable/ic_launcher&quot;
        android:label=&quot;@string/app_name&quot;
        android:theme=&quot;@style/Theme.XYZStyle&quot; &gt;
        &lt;activity
            android:name=&quot;XYZ&quot;
            android:label=&quot;@string/app_name&quot;
            android:windowSoftInputMode=&quot;adjustResize&quot; &gt;
            &lt;intent-filter&gt;
                &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;

                &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
            &lt;/intent-filter&gt;
        &lt;/activity&gt;
    &lt;/application&gt;

    &lt;/manifest&gt;

values-v19/styles.xml

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;resources&gt;

    &lt;style name=&quot;Theme.XYZStyle&quot; parent=&quot;@style/Theme.AppCompat.Light&quot;&gt;
        &lt;item name=&quot;android:windowTranslucentStatus&quot;&gt;true&lt;/item&gt;
        &lt;item name=&quot;android:windowTranslucentNavigation&quot;&gt;true&lt;/item&gt;
    &lt;/style&gt;

    &lt;/resources&gt;

fragment.xml

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    android:id=&quot;@+id/main&quot;
    android:layout_width=&quot;match_parent&quot;
    android:layout_height=&quot;match_parent&quot;
    android:orientation=&quot;vertical&quot; &gt;

    &lt;ListView
        android:id=&quot;@+id/listView_contacts&quot;
        android:layout_width=&quot;match_parent&quot;
        android:layout_height=&quot;match_parent&quot;
        android:clipToPadding=&quot;false&quot;
        android:divider=&quot;@null&quot;
        android:dividerHeight=&quot;0dp&quot;
        android:drawSelectorOnTop=&quot;true&quot;
        android:fastScrollAlwaysVisible=&quot;true&quot;
        android:fastScrollEnabled=&quot;true&quot;
        android:paddingBottom=&quot;@dimen/navigationbar__height&quot; &gt;
    &lt;/ListView&gt;

    &lt;/RelativeLayout&gt;

Any ideas for fixing this?

windowSoftInputMode=&quot;adjustResize&quot; not working with translucent action/navbar

I&#39;m trying to add native code to my app. I have everything in `../main/jni` as it was in my Eclipse project. I have added `ndk.dir=...` to my `local.properties`. I haven&#39;t done anything else yet (I&#39;m not sure what else is actually required, so if I&#39;ve missed something let me know). When I try and build I get this error:

    Execution failed for task &#39;:app:compileDebugNdk&#39;.
    &gt; com.android.ide.common.internal.LoggedErrorException: Failed to run command:
      	/Users/me/android-ndk-r8e/ndk-build NDK_PROJECT_PATH=null 
    APP_BUILD_SCRIPT=/Users/me/Project/app/build/ndk/debug/Android.mk APP_PLATFORM=android-19 
    NDK_OUT=/Users/me/Project/app/build/ndk/debug/obj 
    NDK_LIBS_OUT=/Users/me/Project/app/build/ndk/debug/lib APP_ABI=all

      Error Code:
      	2
      Output:
      	make: *** No rule to make target `/Users/me/Project/webapp/build/ndk/debug//Users/me/Project/app/src/main/jni/jni_part.cpp&#39;,
     needed by `/Users/me/Project/app/build/ndk/debug/obj/local/armeabi-v7a/objs/webapp//Users/me/Project/app/src/main/jni/jni_part.o&#39;.  
    Stop.

What do I need to do?

__Android.mk:__

    LOCAL_PATH := $(call my-dir)
    
    include $(CLEAR_VARS)
    
    # OpenCV
    OPENCV_CAMERA_MODULES:=on
    OPENCV_INSTALL_MODULES:=on
    include .../OpenCV-2.4.5-android-sdk/sdk/native/jni/OpenCV.mk
    
    LOCAL_MODULE    := native_part
    LOCAL_SRC_FILES := jni_part.cpp
    LOCAL_LDLIBS +=  -llog -ldl
    
    include $(BUILD_SHARED_LIBRARY)

__Application.mk:__

    APP_STL := gnustl_static
    APP_CPPFLAGS := -frtti -fexceptions
    APP_ABI := armeabi armeabi-v7a
    APP_PLATFORM := android-8




JNI and Gradle in Android Studio

I am trying to get the device properties from ADB commands. I can how ever get those values by running sample android application. How ever I wish to get using adb shell command itself to make my life easier. Here is the way I will get through sample application but I want corresponding adb commands for 

1. device manufacturer 
2. device hardware
3. device model
4. Os version(integer value)
5. Kernel version

*** Please note my device is not rooted and I have no idea of rooting the device to get these values :-) ***

    ## Code snippet
    import android.os.Build;
    manufacturer = Build.MANUFACTURER;
    hardware = Build.HARDWARE;
    model = Build.MODEL;
    oSVersion = Build.VERSION.SDK_INT;
    kernelVersion = System.getProperty(&quot;os.version&quot;);

However I can able to get the os version. But then I want SDK version in integer. I want 18 in place of 4.2.2

    C:\&gt;adb shell getprop ro.build.version.release
    4.2.2

Android ADB commands to get the device properties

Is it possible to attach the IntelliJ IDEA debugger to a running Java process? If yes, how?

Attach IntelliJ IDEA debugger to a running Java process

I spent the last two days trying to figure out how to debug an HTML5 app I created using Cordova 3.2 and deployed to an Android 2.3 device. All the articles/posts I&#39;ve seen provide hacks rather than real solutions :( and most of the time, none of them works for my case; debug the css styles and the Angularjs code inside my app..

So far I tested;

**debug.phonegap.com**

I injected the script to the `index.html` file then visited the generated URL in debug.phonegap.com but nothing happens; only a blank page.

**Weinre**

Most of the articles I found point to obsolete Github repository that countain a Jar file.. but it&#39;s not found :(

**Edge inspect**

It works and shows the webpage I&#39;m browsing on the PC inside the mobile.. But the problem is that it uses some other integrated browser (or emulator) than the one that runs phonegap apps; so the results are not accurate.

**Chrome emulator**

Same as Edge inspect; it doesn&#39;t allow to view real web-kit v530 that is shipped with Android 2.3.

**The dream solution**

The perfect solution would be an extension to Google Chrome (desktop) that enables you to switch the desktop browser to the same one found in Android 2.3 platforms; no emulation no hacks, just the browser itself with web-kit v 530.

Unfortunately such solution doesn&#39;t exist :( or I&#39;m wrong?

Any suggestions?

Is there a real solution to debug cordova apps

I want to see all queries executed against an elasticsearch instance. Is it possible to run elasticsearch in a debug mode, or to tell it to store all queries executed against it? 

The purpose is to see which queries are launched from a software using elasticsearch for analysis.



How to log all executed elasticsearch queries

I am working on Scrapy 0.20 with Python 2.7. I found PyCharm has a good Python debugger. I want to test my Scrapy spiders using it. Anyone knows how to do that please?

&lt;h3&gt; What I have tried&lt;/h3&gt;
Actually I tried to run the spider as a script. As a result, I built that script. Then, I tried to add my Scrapy project to PyCharm as a model like this:

    File-&gt;Setting-&gt;Project structure-&gt;Add content root.

But I don&#39;t know what else I have to do

How to use PyCharm to debug Scrapy projects

I&#39;m debugging my Python scripts using *pdb* and the manual says I can use **p variables** command to print the values of the specified variables at a certain point. But what if I had lots of variables, like 20 variables, and I would like to track the value of all of them? How do I print all of them without specifying each one manually? Take for example this script:

    a = 1
    b = 2
    c = 3

I can debug it with pdb and print all of them using **p a, b, c** like this:

    $ python -m pdb test.py 
    &gt; /media/test.py(1)&lt;module&gt;()
    -&gt; a = 1
    (Pdb) n
    &gt; /media/test.py(2)&lt;module&gt;()
    -&gt; b = 2
    (Pdb) n
    &gt; /media/test.py(3)&lt;module&gt;()
    (Pdb) n
    --Return--
    &gt; /media/test.py(3)&lt;module&gt;()-&gt;None
    -&gt; c = 3
    (Pdb) p a, b, c
    (1, 2, 3)
    (Pdb) 

But I have to manually specify each variable. Is there a way of print all variables at once, without specifying each one of them?

How to print all variables values when debugging Python with pdb, without specifying each variable?

Android Studio 0.4.2 was working fine and today I opened it and almost everything was red and the auto-completion had stopped working. I look at the imports and AS seems to be telling me it can&#39;t find **android.support.v4** all of a sudden (offering me the option to remove the unused imports). (**android.support.v7** seems to be fine though).

Things I have tried: 

- Rebuilding the project
- Cleaning the project
- Syncing with Gradle Files
- Closing the Project, closing AS and relaunching / reopening
- File &gt; Invalidate Caches / Restart
- Examining Lint, didn&#39;t see anything obvious
- Double checking all support libraries are up to date in the SDK manager
- Examining my Build.gradle, although no changes and it&#39;s the same as usual, the way it was working all the time.

Here it is in case it&#39;s relevant:

    buildscript {
        repositories {
            mavenCentral()
        }
        dependencies {
            classpath &#39;com.android.tools.build:gradle:0.7.+&#39;
        }
    }
    apply plugin: &#39;android&#39;
    
    repositories {
        mavenCentral()
    }
    
    android {
        compileSdkVersion 19
        buildToolsVersion &#39;19.0.0&#39;
    
        defaultConfig {
            minSdkVersion 8
            targetSdkVersion 19
        }
    }
    
    dependencies {
        compile &#39;com.android.support:support-v4:19.0.0&#39;
        compile &#39;com.android.support:gridlayout-v7:19.0.0&#39;
        compile &#39;com.android.support:appcompat-v7:19.0.0&#39;
        compile &#39;com.google.android.gms:play-services:4.0.30&#39;
        compile project(&#39;:libraries:facebook&#39;)
        compile files(&#39;libs/core.jar&#39;)
    }

When I hit &quot;Sync with Gradle&quot; and open &quot;Project Settings&quot; I get a red error telling me I have duplicate library references and to remove the unused ones.. 
![enter image description here][1]


My project compiles and runs fine but I really need the autocomplete working!! Does anyone have any suggestions?

![enter image description here][2]


  [1]: http://i.stack.imgur.com/YACON.jpg
  [2]: http://i.stack.imgur.com/ZzJDV.jpg

Android Studio suddenly cannot resolve symbols

I have built a new project in Android Studio using the new project templates provided as part of the tool. All of the code has been generated by Studio I have not made any amendments yet.

I am attempting to run the code but the app fails with the following errors, not sure what the problem is so any help appreciated.

    UNEXPECTED TOP-LEVEL EXCEPTION:
    com.android.dex.DexException: Multiple dex files define Landroid/support/v7/app/ActionBar$Callback;
    	at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594)
    	at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552)
    	at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533)
    	at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170)
    	at com.android.dx.merge.DexMerger.merge(DexMerger.java:188)
    	at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439)
    	at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287)
    	at com.android.dx.command.dexer.Main.run(Main.java:230)
    	at com.android.dx.command.dexer.Main.main(Main.java:199)
    	at com.android.dx.command.Main.main(Main.java:103)
    
     FAILED
    
    FAILURE: Build failed with an exception.
    
    * What went wrong:
    Execution failed for task &#39;:app:dexDebug&#39;.
    &gt; com.android.ide.common.internal.LoggedErrorException: Failed to run command:
    	C:\Users\RichardKavanagh\AppData\Local\Android\android-sdk\build-tools\19.0.1\dx.bat --dex --output D:\Android\Projects\MyHealthRecord\app\build\libs\app-debug.dex D:\Android\Projects\MyHealthRecord\app\build\classes\debug D:\Android\Projects\MyHealthRecord\app\build\dependency-cache\debug D:\Android\Projects\MyHealthRecord\app\build\pre-dexed\debug\android-support-v7-appcompat-5a78dab7e2789bbe64f4bc80d106ca75c04dcf6f.jar D:\Android\Projects\MyHealthRecord\app\build\pre-dexed\debug\classes-f9b947272e9f33ba50355b52d82755584f9c0c58.jar D:\Android\Projects\MyHealthRecord\app\build\pre-dexed\debug\support-v4-19.0.0-31a2c13df80d37d62ca50fec3bde6da0ca706223.jar
    Error Code:
    	2
    Output:
    	
    	UNEXPECTED TOP-LEVEL EXCEPTION:
    	com.android.dex.DexException: Multiple dex files define Landroid/support/v7/app/ActionBar$Callback;
    		at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:594)
    		at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:552)
    		at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:533)
    		at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:170)
    		at com.android.dx.merge.DexMerger.merge(DexMerger.java:188)
    		at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:439)
    		at com.android.dx.command.dexer.Main.runMonoDex(Main.java:287)
    		at com.android.dx.command.dexer.Main.run(Main.java:230)
    		at com.android.dx.command.dexer.Main.main(Main.java:199)
    		at com.android.dx.command.Main.main(Main.java:103)
    	
    
    
    * Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
    
    BUILD FAILED
    
    Total time: 12.948 secs

Android Studio - UNEXPECTED TOP-LEVEL EXCEPTION:

I&#39;m trying to use Jake Wharton&#39;s [ViewPagerIndicator library][1], but I&#39;m unable to get it working with my Gradle project in Android Studio. 

I add it as a dependency like so: 

        dependencies {
           // ... other ommitted
           compile &#39;com.viewpagerindicator:library:2.4.1&#39;
           compile &#39;com.android.support:support-v4:19.0.1&#39;
           compile &#39;com.nineoldandroids:library:2.4.0&#39;
           // ...
        }

but the project doesn&#39;t seem to recognize any components in the library. I&#39;m wondering if there&#39;s a dependency issue with different support-v4 versions or something in nineoldandroids...?


  [1]: https://github.com/JakeWharton/ViewPagerIndicator

Using ViewPagerIndicator library with Android Studio and Gradle

I found that the ESP register is the current stack pointer and EBP is the base pointer for the current stack frame. However, I don&#39;t understand these definitions (I am just starting to learn how to code in assembler). 

What I understand is that ESP points towards the stack itself and EBP points towards whatever is on top of the stack&lt;sup&gt;1&lt;/sup&gt;.  But these are just my guesses and they are most likely incorrect. Otherwise, what would a statement like the following mean?

    MOV EBP, ESP    


Footnote 1:   Editor&#39;s note: Yes, that&#39;s incorrect.  In standard terminology, the &quot;top of the stack&quot; is where ESP points, even though it&#39;s the lowest address in the stack frame.  By analogy to a stack data structure that grows upward, even though the callstack on x86 (like most ISAs) grows downward.

What are the ESP and the EBP registers?

If I run 

    Array.apply(null, new Array(1000000)).map(Math.random);

on Chrome 33, I get

&gt;`RangeError: Maximum call stack size exceeded`

Why?

&quot;RangeError: Maximum call stack size exceeded&quot; Why?

I&#39;m trying to get a deeper understanding of how the low level operations of programming languages work and especially how they interact with the OS/CPU. I&#39;ve probably read every answer in every stack/heap related thread here on Stack&amp;nbsp;Overflow, and they are all brilliant. But there is still one thing that I didn&#39;t fully understand yet.

Consider this function in pseudo code which tends to be valid Rust code ;-)

    fn foo() {
        let a = 1;
        let b = 2;
        let c = 3;
        let d = 4;
        
        // line X
        
        doSomething(a, b);
        doAnotherThing(c, d);
    }

This is how I assume the stack to look like on line X:

    Stack

    a +-------------+
      | 1           | 
    b +-------------+     
      | 2           |  
    c +-------------+
      | 3           | 
    d +-------------+     
      | 4           | 
      +-------------+ 
                      
Now, everything I&#39;ve read about how the stack works is that it strictly obeys LIFO rules (last in, first out). Just like a stack datatype in .NET, Java or any other programming language.

But if that&#39;s the case, then what happens after line X? Because obviously, the next thing we need is to work with `a` and `b`, but that would mean that the OS/CPU (?) has to pop out `d` and `c` first to get back to `a` and `b`. But then it would shoot itself in the foot, because it needs `c` and `d` in the next line.

So, I wonder what **exactly** happens behind the scenes?

Another related question. Consider we pass a reference to one of the other functions like this:

    fn foo() {
        let a = 1;
        let b = 2;
        let c = 3;
        let d = 4;
        
        // line X
        
        doSomething(&amp;a, &amp;b);
        doAnotherThing(c, d);
    }

From how I understand things, this would mean that the parameters in `doSomething` are essentially pointing to the same memory address like `a` and `b` in `foo`. But then again this means that there is no *pop up the stack until we get to `a` and `b`* happening.

Those two cases make me think that I haven&#39;t fully grasped how **exactly** the stack works and how it strictly follows the *LIFO* rules.


How exactly does the callstack work?

In Objective-C, you can print the call stack by doing the following:

    NSLog(@&quot;%@&quot;, [NSThread callStackSymbols]);

How do you do this in Swift without using Foundation class?

Content Type	Original Author	Original Content on Stackoverflow
Question	IsmailS	View Question on Stackoverflow
Solution 1 - Android	longi	View Answer on Stackoverflow
Solution 2 - Android	Nickolai Astashonok	View Answer on Stackoverflow

Android Studio - Where can I see callstack while debugging an android app?

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