Tux Machines

Programming Leftovers

Posted by Roy Schestowitz on Mar 27, 2023

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How to Implement OTP View in Android?

=> ↺ How to Implement OTP View in Android?

An OTP View or PinView in android is a widget that allows users to enter their PIN, OTP, etc.

Little useless-useful R functions – Transforming dataframe to markdown table

=> ↺ Little useless-useful R functions – Transforming dataframe to markdown table

Writing markdown documents outside RStudio (using the usual set of packages) has benefits and struggles. Huge struggle is transforming dataframe results into markdown table, using hypens and pipes.

Reading Remote Data Files

=> ↺ Reading Remote Data Files

Sometimes data arrives as a series of individual files each of which is organized in the same way—which is to say, each of which has the same variables, features, or columns.

Dirk Eddelbuettel: littler 0.3.18 on CRAN: New and Updated Scripts

=> ↺ Dirk Eddelbuettel: littler 0.3.18 on CRAN: New and Updated Scripts

The nineteenth release of littler as a CRAN package landed this morning, following in the now seventeen year history (!!) as a package started by Jeff in 2006, and joined by me a few weeks later.

=> ↺ littler | ↺ CRAN package | ↺ Jeff

littler is the first command-line interface for R as it predates Rscript. It allows for piping as well for shebang scripting via #!, uses command-line arguments more consistently and still starts faster. It also always loaded the methods package which Rscript only began to do in recent years.

=> ↺ littler | ↺ starts faster

=> ↺ littler | ↺ CRAN package | ↺ Jeff | ↺ littler | ↺ starts faster | ↺ RInside | ↺ FAQ vignette | ↺ Github repo | ↺ examples vignette

Update: python-per-line.py version 0.0.10

=> ↺ Update: python-per-line.py version 0.0.10

This is an update to python-per-line.py, my tool to execute a Python expression one each line of a text file. New options are regex join split. And there are new string reversal functions: Reverse and ReverseFind. More details in the man page. python-per-line_V0_0_10.zip (http)MD5: 54BFA2E593A024E3FBAA76757D63847ESHA256: D12E5FE10F71011C480EA332E0E183AE904024CEBC22128775197481152B9C1E

Top 10 Python IDEs in 2023

=> ↺ Top 10 Python IDEs in 2023

IDE stands for Integrated Development Environment is software that facilitates the programmers to develop applications.

Overusing the Static Keyword in Java

=> ↺ Overusing the Static Keyword in Java

The static keyword is often overused in Java and this can lead to several risks, including: To mitigate these risks, it is recommended to use the static keyword sparingly and only when necessary.

How to Use Properly Lambdas in Java

=> ↺ How to Use Properly Lambdas in Java

Lambdas are a concise way to define and use functional interfaces in Java.

What is a Predicate in Java and How to Use It

=> ↺ What is a Predicate in Java and How to Use It

In Java, a predicate is a functional interface from the java.util.function package that represents a function that takes in one argument and returns a boolean value.

How to Add Dependencies in a Maven Project

=> ↺ How to Add Dependencies in a Maven Project

In Maven, you can manage dependencies using a pom.xml file.

What is Polymorphism in Java

=> ↺ What is Polymorphism in Java

Polymorphism in Java is a concept that allows objects of different classes to be treated as if they were of the same type. It allows you to write code that can work with objects of multiple classes, without knowing the specific type of each object at compile time.

How to Remove Elements from Collections using the removeIf() Method

=> ↺ How to Remove Elements from Collections using the removeIf() Method

The removeIf() method is a default method introduced in Java 8 for the Collection interface. It is used to remove all elements from the collection that satisfy a given condition.

What is the AutoCloseable interface in Java and How to Implement it

=> ↺ What is the AutoCloseable interface in Java and How to Implement it

The AutoCloseable interface is a functional interface introduced in Java 7 that defines a single method called close(). This interface is used to ensure that resources are closed automatically when they are no longer needed, without the need for manual intervention.

How to Prevent Resources From Leaking in Java

=> ↺ How to Prevent Resources From Leaking in Java

In Java, a resource leak occurs when a program fails to properly release system resources after they are no longer needed. This can lead to a range of problems, such as reduced system performance, increased memory usage, and potential security vulnerabilities.

Reasons to Make Methods Final in Java

=> ↺ Reasons to Make Methods Final in Java

Making methods final in Java can provide several benefits...

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