Tutorial by Examples: n

1.8 Run: $ git mv old/path/to/module new/path/to/module 1.8 Edit .gitmodules and change the path of the submodule appropriately, and put it in the index with git add .gitmodules. If needed, create the parent directory of the new location of the submodule (mkdir -p new/path/to). M...

Since Ionic 2 is getting better and better every day, please always check the official documentation to keep track of the latest changes and improvements. Prerequisites: You will need NodeJS in order to build Ionic 2 projects. You can download and install node here and learn more about npm and the...

One way to calculate the Big-O value of a procedure you've written is to determine which line of code runs the most times in your function, given your input size n. Once you have that number, take out all but the fastest-growing terms and get rid of the coefficents - that is the Big-O notation of yo...

You can quickly switch to the previous branch using git checkout -

Canvas is the simplest of panels. It places items at the specified Top/Left coordinates. <Canvas> <TextBlock Canvas.Top="50" Canvas.Left="50" Text="This is located at 50, 50"/> <TextBlock Canvas.Top="100" Canv...

DockPanel aligns the control according to the dock property, in the order it's placed in the control. NOTE: DockPanel is part of the WPF framework, but does not come with Silverlight/WinRT/UWP. Open-source implementations are easy to find though. <DockPanel LastChildFill="False"> ...

StackPanel places its controls one after another. It acts like a dock panel with all of its control's docks set to the same value. <!-- The default StackPanel is oriented vertically, so the controls will be presented in order from top to bottom --> <StackPanel> <Button Content=&q...

Locally created images can be pushed to Docker Hub or any other docker repo host, known as a registry. Use docker login to sign in to an existing docker hub account. docker login Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https...

Run the install on a single run command to merge the update and install. If you add more packages later, this will run the update again and install all the packages needed. If the update is run separately, it will be cached and package installs may fail. Setting the frontend to noninteractive and pa...

Open Repo Create new repo (My advice first add pods on a temporary repo before adding to your original project) Fill Repository name with your repo name. I'll use "myrepo" for this tutorial and will use "<" and ">" symbols for the parts you should change to yo...

To get the IP address of a docker machine, you can do that with this command : docker-machine ip machine-name

gitk path/to/myfile

Let's say you have two commits d9e1db9 and 5651067 and want to see what happened between them. d9e1db9 is the oldest ancestor and 5651067 is the final descendant in the chain of commits. gitk --ancestry-path d9e1db9 5651067

If you have the version tag v2.3 you can display all commits since that tag. gitk v2.3..

Java provides a conditional-and and a conditional-or operator, that both take one or two operands of type boolean and produce a boolean result. These are: && - the conditional-AND operator, || - the conditional-OR operators. The evaluation of <left-expr> && <righ...

On linux: If you don't have pip installed, install it first: curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py" sudo python get-pip.py Then install awscli: sudo pip install awscli On Windows: Download the latest installers from here

Now you have aws cli installed, you'll have to configure it access your AWS resources. You can have multiple profiles like test, dev, prod, etc profiles. So let's assume you want to configure it for your test environment. aws configure --profile=test It will ask for following information: AWS A...

The best part about aws cli is that you can embed the commands into a script and can trigger them based on some criteria. Like auto deployment on production (in Elastic Beanstalk), no need to go to AWS Console to select and deploy. You'll get all the available commands by running: # This will give...

Write formatted data to string int sprintf ( char * str, const char * format, ... ); use sprintf function to write float data to string. #include <stdio.h> int main () { char buffer [50]; double PI = 3.1415926; sprintf (buffer, "PI = %.7f", PI); printf ("%s\n&...

Take a close look at these two property files which are seemingly completely identical: except they are really not identical: (screenshots are from Notepad++) Since trailing whitespace is preserved the value of lastName would be "Smith" in the first case and "Smith " in th...