PPPro: Adding a Country

PenPal Pro comes pre-loaded with more than 130 countries already in the system. But maybe you have a penpal in one that's missing, or maybe world events have created new countries since this list was created.

The list of Countries shows up on the Penpal Details form, where you can identify a pal's Nationality. It also shows up on the Addresses form.

How do you add a new country to the list?

From the Main Screen, click on the Lists tab. You will see a bunch of lists that you can change.
Next, click on the Countries button. This opens the Countries screen, with country names paired with a unique 3-letter country code.

To change the name of an existing country, first find it in the list, either by scrolling down to it or by searching (press Control-F for the search box). Then simply type the new name in the Country Name box, and click the Save button at the top of the screen. (changing the 3-letter code is not recommended).

To add a new country, click the Add Country button at the top of the screen. You will get a blank entry, with space for a country name and 3-letter code.

Type the name of the new country, up to 50 characters. Press the Tab key or click in the 3-letter code field and type a code for the new country (note: this must be unique, if the 3-letter code exists already for another country, you will get an error message). Then click the Save button at the top of the screen.

Ta-da! Now the new country will appear with all the rest in your Penpal and Addresses forms.

How to do Git Rebase in Eclipse

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Scala provides a rich Collections API. Let's look at the useful groupBy() function. What does groupBy() do? It takes a collection, assesses each item in that collection against a discriminator function, and returns a Map data structure. Each key in the returned map is a distinct result of the discriminator function, and the key's corresponding value is another collection which contains all elements of the original one that evaluate the same way against the discriminator function. So, for example, here is a collection of Strings: val sports = Seq ("baseball", "ice hockey", "football", "basketball", "110m hurdles", "field hockey") Running it through the Scala interpreter produces this output showing our value's definition: sports: Seq[String] = List(baseball, ice hockey, football, basketball, 110m hurdles, field hockey) We can group those sports names by, say, their first letter. To do so, we need a disc...

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A Java-based application on my Windows 10 machine recently started prompting me to upgrade my version of Java. Since I wanted to control it myself, I declined the app's offer to upgrade for me, and downloaded and installed the latest Java 8 from Oracle. In my case, Java 1.8.0_171, 64-bit version. The upgrade went fine. But when I launched the app, it again said I needed to upgrade. Why was it still looking at the old location? I made the change using Settings, to change the JAVA_HOME environment variable to point to the location of the new upgrade. But no change, the app still insisted that I needed to upgrade. A little research into the app's execution path showed that it was using c:\ProgramData\Oracle\Java\javapath to find Java. When I looked in that folder, I found symbolic links to my old Java installation. Normally, this hidden bit of information gets updated automatically in the upgrade or installation process. I have read of cases where, when downg...

Multiple Remote Git Repositories and Branches in Eclipse

Sometimes, when using Git repositories and the Eclipse IDE, we want to access other remote repositories within the one we are currently using. One example, which I will use as the scenario for the steps below: a team converted existing code and its history to Git from another source-control management tool, with separate repositories for closely related but distinct release points. When they need to make a fix to a past release, on the past release's "hotfix" branch, they want to do as little work as possible to bring that fix into the current cutting-edge "dev" branch of their main repository. Other writers have offered How-To's for the git command-line steps to do so. What I will do is to show how the setup and configuration can be done within the Eclipse IDE (I used Mars for the screen-shots).

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