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Update dependencies, add table with current results
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‎README.md‎

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## Data
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The data was extracted from [Eurostat](http://appsso.eurostat.ec.europa.eu/nui/show.do?dataset=urb_cpop1&lang=en) in the beginning of September 2018. I opened the extracted CSV in LibreOffice and saved it again because there were some illegal UTF-8 characters in the Eurostat output that some csv importers couldn't handle directly.
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# Results [June 2025]
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| Library | Maintained | Version | Time (ms) |
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|------------------|------------|-----------|-----------|
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| DuckDb | Y | 1.3.0 | 93 |
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| Kotlin DataFrame | Y | 1.0-beta2 | 816 |
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| Tablesaw | Y | 0.44.1 | 820 |
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| Joinery | n | 1.9 | 1,478 |
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| Krangl | n | 0.18.4 | 1,796 |
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| Morpheus | n | 0.9.23 | * |
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* Morpheus is no longer maintained and doesn't seem to work on later java versions (error related to accessing `sun.util.calendar.ZoneInfo`)
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## Code
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The code for the three libraries is present in the `Test{libraryname}.java` files. They all use `CheckResult.java` to do a basic correctness check for the top-growing cities.
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‎build.gradle‎

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buildscript {
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ext.kotlin_version = '1.8.21'
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ext.kotlin_version = '2.1.21'
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repositories {
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mavenCentral()
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}
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apply plugin: 'kotlin'
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apply plugin: 'eclipse'
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sourceCompatibility = 1.8
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sourceCompatibility = '21'
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repositories {
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mavenCentral()
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jcenter()
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maven { url 'https://maven.scijava.org/content/repositories/public/' }
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}
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dependencies {
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implementation 'tech.tablesaw:tablesaw-core:0.43.1'
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implementation 'tech.tablesaw:tablesaw-core:0.44.1'
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// needed for tablesaw
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implementation 'com.google.guava:guava:31.1-jre'
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implementation 'joinery:joinery-dataframe:1.9'
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// For the CSV import joinery needs this dependency too:
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implementation 'org.apache.poi:poi:3.17'
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implementation 'com.zavtech:morpheus-core:0.9.21'
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implementation 'com.zavtech:morpheus-core:0.9.23'
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implementation 'org.datavec:datavec-api:1.0.0-beta2'
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implementation 'org.datavec:datavec-local:1.0.0-beta2'
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implementation "de.mpicbg.scicomp:krangl:0.11"
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implementation 'com.github.holgerbrandl:krangl:0.18.4'
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implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
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implementation "org.jetbrains.kotlinx:dataframe:0.10.0"
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implementation 'org.duckdb:duckdb_jdbc:0.8.0'
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implementation "org.jetbrains.kotlinx:dataframe:1.0.0-Beta2"
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implementation 'org.duckdb:duckdb_jdbc:1.3.0.0'
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}
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‎gradle/wrapper/gradle-wrapper.jar‎

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‎gradle/wrapper/gradle-wrapper.properties‎

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distributionBase=GRADLE_USER_HOME
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distributionPath=wrapper/dists
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distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
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networkTimeout=10000
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validateDistributionUrl=true
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zipStoreBase=GRADLE_USER_HOME
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zipStorePath=wrapper/dists

‎gradlew‎

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