Spark SQL date/time Arithmetic examples: Adding, Subtracting, etc
12 Jun 2022 Examples on how to subtract, add dates and timestamps in Spark SQL Dataframes, along with a summary.
Read More ›Java.sql for Spark Scala: Examples using Dates, Times, etc
31 May 2022 Common operations to make use of java.sql Date/Time classes, convert to/from java.time Classes, etc.
Read More ›Python Date/Datetime Arithmetic Examples: Adding, Subtracting, etc
08 May 2022 Some examples on how to perform basic arithmetic on Python date and datetime objects, examples on timedelta, etc.
Add Per-core Metrics on indicator-multiload on Ubuntu
08 May 2022 Add individual metrics for each core, such as usage percentage for the basic ubuntu indicator-multiload plugin.
Read More ›Matplotlib Examples: Drawing Straight Lines
06 May 2022 Examples showing you how to draw several types of straight lines on matplotlib, horizontal, vertical, at angles, dashed, solid, etc
Read More ›Update Alternatives: Changing Java version on Ubuntu
02 May 2022 How to list and change java version on ubuntu.
Read More ›Pandas Examples: Plotting Date/Time data with Matplotlib/Pyplot
24 Apr 2022 Examples on how to plot time-series or general date or time data from a pandas dataframe, using matplotlib behind the scenes.
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If you use Git you should be very Liberal in Deleting Stale Code
21 Apr 2022 On the costs of keeping stale code around and how to recover old code using git, if needed.
Read More ›Apache Spark Examples: Dataframe and Column Aliasing
29 Dec 2021 Examples on how to add and work with dataframe and column aliases on Spark SQL. Examples using Scala. Also includes common error messages and common questions.
Read More ›How to Ask for Tech Support
24 Dec 2021 Asking questions and requesting support the right way, to increase the odds your problems will actually get solved, while maintaining good relations with support staff.
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