Value In Brief
All You Need To Know Explained In Brief

How to Shutdown PC using C++ ?

If you want to shutdown your Windows PC from your C++ code, use this code snippet. #include <stdio.h>#include <stdlib.h> int main() { system("c:\\Windows\\system32\\shutdown /s"); return 0; } I hope this helps. Do you recommend reading this blog post? share it!

How to Fix (main:30677): Gtk-WARNING **: cannot open display: ?

If you are facing this error (main:30677): Gtk-WARNING **: 05:40:47.665: cannot open display: just install Gtk+ development library, and set the display screen to 0. Installing Gtk+ using Homebrew If you are using a UNIX-like OS such as Mac OS X, or a Linux distribution. You can use Homebrew package manager to install Gtk+ as following. brew install Gtk+ Install Gtk+ using apt If you are using Debian, Ubuntu, Elementary OS, Linux Mint, .

How to Tune Garbage Collector in Go Language ?

How to set the GOGC value ? You can set its value in the terminal like this. GOGC=200 Or you can change it in yaml file of the environment variable when using docker or kubernetes. What is the default value of GOGC ? The default value of GOGC is 100 which means that the garbage collection process will run when the allocations doubled from previous allocations count. What can I do to reduce the effect of garbage collection in Go ?

How to Draw Rectangle on Imageview ?

If you already have a bitmap image in your code, just use this code snippet. bmp = bmp.copy(Bitmap.Config.RGB_565, true); That code will recreate the bitmap image as a mutable. So you can edit that bitmap image on canvas as you like. But if you do not have a bitmap image in code, create a new one using this code snippet. Bitmap bmp=Bitmap.createBitmap(img.getHeight(),img.getWidth(),Bitmap.Config.RGB_565); where img is another bitmap image you want to make a new one with the height and width of it.

Linux Laptop Boot Battery Optimizations

Boot Optimization use sudo systemd-analyze critical-chain to get the most time consuming services. If you don’t need those services just disable them by this command sudo systemctl disable service-name.service and replace the service-name with the name of the service you want to disable. BIOS Optimization Just disable any feature you do not use such as fingerprint scanner. To reboot into your BIOS settings, use this command sudo systemctl reboot --firmware-setup.

Ubuntu boots to black screen after trying to install proprietary Nvidia graphics driver

The problem occured after installing proprietary Nvidia graphics driver using those commands. sudo apt-get update && clear && apt-cache search nvidia-[0-9] | grep 'binary driver' sudo apt-get purge nvidia* sudo apt-get install nvidia-340 nvidia-settings sudo nvidia-xconfig The fix is to let the built-in ubuntu-drivers program decide automatically which graphics driver to install. Open the terminal and type this command to update the apt repositories. sudo apt update Then, remove all packages started with nvidia using this command.

How to Create Bash Function ?

First step: create a utilities.sh file to add all your bash functions in it. 2nd step: add your bash function/s like this. ## utilities.sh convertMP4toMP3(){ echo -n "Enter source mp4 file : " read sourceFile echo -n "Enter destination mp3 file : " read destFile avconv -i $sourceFile -vn -acodec libmp3lame -ac 2 -ab 160k -ar 48000 $destFile } I created a bash function to convert mp4 video file to mp3 audio file from command line.

Convert Mp4 to Mp3 in Linux Terminal

First things first, install the required software packages. sudo apt-get install ffmpeg && sudo apt-get install libavcodec-extra-53 Then use it. For FFmpeg with Constant Bitrate Encoding (CBR) ffmpeg -i video.mp4 -vn \ -acodec libmp3lame -ac 2 -ab 160k -ar 48000 \ audio.mp3 or if you want to use Variable Bitrate Encoding (VBR) ffmpeg -i video.mp4 -vn \ -acodec libmp3lame -ac 2 -qscale:a 4 -ar 48000 \ audio.

Adding GIF image in an ImageView in android

use android-gif-drawable library add the following dependency to build.gradle file of your project. dependencies { implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.19' } Use the view in XML file like this. <pl.droidsonroids.gif.GifImageView android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/src_anim" android:background="@drawable/bg_anim" /> For more customization and code, see the docs here. use VideoView on Android You can use VideoView to show the GIF image. But the library is more efficient and smooth. use ImageView on Android Use ImageView and Split the GIF file into several images and then apply animation to it.

How to make imageview over another view in Android ?

There are at least 3 ways to put imageview on another imageview. Simple Order This way is just put the imageview after the other imageview in XML file. It is simple like that. The first view will be underneath the second one. Using FrameLayout <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" > <ImageView android:id="@+id/imageView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/t" /> <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_launcher" /> </FrameLayout> The second image will be on top. Put imageview on another imageview exactly <RelativeLayout xmlns:android="http://schemas.