dflib | In-memory Java DataFrame library | SQL Database library

by nhl Java Version: 0.18 License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | dflib Summary

dflib is a Java library typically used in Database, SQL Database, Pandas applications. dflib has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub, Maven.

DFLib ("DataFrame Library") is a lightweight pure Java implementation of a common DataFrame data structure. With DFLib you get essentially the same data manipulation tools you may be used to in SQL (such as queries and joins), only you can use them in-memory and over dynamically defined data structures. It is somewhat close to Python pandas, except it is intended to be used with Java and other JVM languages. DFLib comes with connectors for a variety of data formats: CSV, Excel, RDBMS (JDBC), Avro, JSON, etc.

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Support

dflib has a low active ecosystem.

It has 54 star(s) with 8 fork(s). There are 8 watchers for this library.

It had no major release in the last 12 months.

There are 12 open issues and 152 have been closed. On average issues are closed in 15 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of dflib is 0.18

Quality

dflib has 0 bugs and 0 code smells.

Security

dflib has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

dflib code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

dflib is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

dflib releases are not available. You will need to build from source code and install.

Deployable package is available in Maven.

Build file is available. You can build the component from source.

Top functions reviewed by kandi - BETA

kandi has reviewed dflib and discovered the below as its top functions. This is intended to give you an instant insight into dflib implemented functionality, and help decide if they suit your requirements.

Creates a new DataFrame with the specified labels
Expects a row at a given position
Expect the type of array
Creates a new DataFrame with the specified exps
Full join
Sum of series
Selects between two series
Returns true if this series equals another series
Nodes from another series
Returns true if another series are equal
Selects between two Series
Performs a inner join over the dataFrame
Compares two series times
Searches for left and right rows that match the query predicate
Replaces the rows in a DataFrame with a left - hand side grouping
Full join method
Overwrites the left hand side of the DataFrame
Returns the cumulative sum of the series
Folds data by row
Load the table metadata
Sum sum of series
Performs a right join

Get all kandi verified functions for this library.

dflib Key Features

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dflib Examples and Code Snippets

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Community Discussions

Trending Discussions on dflib

Can a subroutine be contained in a subroutine (not in a program) in Fortran?

QUESTION

Can a subroutine be contained in a subroutine (not in a program) in Fortran?

Asked 2021-Jul-20 at 12:32

I have to deal with an old piece of software written in Fortran (mainly written in the 70's and badly maintained up to 3 years ago).

I am trying to get it compiled with VS2017 and the Intel oneAPI compiler (Fortran Compiler Classic 2021.3.0) for 64-bits architectures.

In the process of updating one of its modules, I convinced myself that the compiler does not support what I have learned to be called "host association" between subroutines (via CONTAINS statement). None of the symbols defined in a containing subroutine seems to be visible in the contained subroutine (if I use IMPLICIT NONE in the contained subroutine the compiler tells me that I need to declare all of them while if I don't, the compilers gets the declarations very wrong and not matching with the declarations in the containing subroutine. Lots of misleading error messages are printed).

Can somebody of you confirm that this is the case or provide the compiler options to enable this feature that clearly was allowed in the past by some compilers? If needed I will post the source code (I am not posting it immediately because I think this could be a very naive question for a Fortran expert, I am instead a total novice).

Sincerely,

HERE I COMPLEMENT THE ORIGINAL POST AS REQUESTED IN THE COMMENTS

Original code:

...

ANSWER

Answered 2021-Jul-19 at 23:31

Internal procedures (following a CONTAINS) can see all entities declared in the "host scope" (before the CONTAINS), and can see other internal procedures, but cannot see entities declared within other internal procedures. Host association goes up the tree only. For example:

Source https://stackoverflow.com/questions/68447772

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install dflib

You can download it from GitHub, Maven.
You can use dflib like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the dflib component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .