Numpy is one of the most important data science libraries. This is part 1 of the numpy tutorial. Loading Sorry, something went wrong. Reload? Sorry, we cannot display this file. Sorry, this file is invalid so it cannot be displayed. Viewer requires iframe. view raw numpy_tutorial_part1.ipynb hosted with ❤ Read more
There are several key terms which one must know to get a picture of how multithreading works in Java. The post deals mostly with the java multithreading classes that come builtin with java. Runnable A Runnable is basically a type of class (Runnable is an Interface) that can be put Read more
Useful docker commands that we may use daily 1.List all running containers $ docker ps -a 2. List all running containers (only IDs) $ docker ps -aq 3. Pull an image $ docker pull <image_name> 4. Start/Run a container $ docker run <image_name> The above command will start a container for Read more
Goroutines are functions that are created and scheduled to be run independently by the Go scheduler. The Go scheduler is responsible for the management and execution of goroutines. Notes Goroutines are functions that are scheduled to run independently. We must always maintain an account of running goroutines and shutdown cleanly. Read more
Question Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n). Example: Input: S = “ADOBECODEBANC”, T = “ABC” Output: “BANC” Note: If there is no such window in S that covers all characters in Read more
SDK man is an awesome tool to install dependencies in Spring boot applications. I found it pretty useful for installing and uninstalling groovy and scala. Refer this link for more such commands To find out sdk man version one is using $sdk version Get help $sdk help List all things Read more
Here is a self note to how to tar ball and untar ball a file. To compress a directory use the following syntax: # tar -zcvf archive_name.tar.gz directory_to_compress To decompress an archive use the following syntax: # tar -zxvf archive_name.tar.gz
Here are few of the spring boot,maven and gradle commands I find pretty useful. They are mostly used for building jars and running them. Package into Jar $spring jar myapp.jar app.grovy To see contents of jar $jar tf my-app.jar Run Jar $java -jar myapp.jar Building with Gradle $ gradle Read more
Here is my shortcut list for some of the chef commands. Not all of these work in AWS opsworks. Generating cookbooks named apache chef generate cookbook cookbooks/apache Generating recipes named server.rb chef generate recipe cookbooks/apache/ server Check syntax of recipe chef exec ruby -c cookbooks/apache/recipes/server.rb Run Recipe Read more
For installing jenkins on Ubuntu 14.04 using Java RPM do the following steps. Step 1: Download java tar ball file from http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Step 2: Scp the files from your local machine to your server Step 3: Install java sudo tar xvzf jdk-8u5-linux-i586.tar.gz -C /usr/java Step 4: Setup java. I downloaded Read more