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From rows to data frame #1463

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From rows to data frame #1463

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50796d5
adding from_rows_to_data_frame function
CarloMariaProietti Sep 21, 2025
2ad1b89
adding test
CarloMariaProietti Sep 22, 2025
5355ac5
pulling master
CarloMariaProietti Sep 24, 2025
fa40564
cleaning test
CarloMariaProietti Sep 29, 2025
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3 changes: 3 additions & 0 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,9 @@ public fun <T> Iterable<DataRow<T>>.toDataFrame(): DataFrame<T> {
}
}

@JvmName("toDataFrameMapStringAnyNullable")
public fun Iterable<Map<String, *>>.toDataFrame(): DataFrame<*> = map { it.toDataRow() }.toDataFrame()

@JvmName("toDataFrameAnyColumn")
public fun Iterable<AnyBaseCol>.toDataFrame(): AnyFrame = dataFrameOf(this)

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10 changes: 10 additions & 0 deletions core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt
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Expand Up @@ -425,6 +425,16 @@ class CreateDataFrameTests {
df["value"].toList() shouldBe maps
}

@Test
fun `should convert iterables of maps representing rows to DataFrame with value column`() {
val maps: Iterable<Map<String, *>> = listOf(mapOf("a" to 1, "b" to true), mapOf("c" to 2, "d" to false),)
val df = maps.toDataFrame()
df["a"][0] shouldBe 1
df["b"][0] shouldBe true
df["c"][1] shouldBe 2
df["d"][1] shouldBe false
}

class NoPublicPropsClass(private val a: Int, private val b: String)

@Test
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