Create Csv File With Hashmap In Kotlin Stack Overflow

Create Csv File With Hashmap In Kotlin Stack Overflow I am fairly new to kotlin, and have wanted to change the way to save my csv file. currently my hashmap is : and my data looks like this : {a1 = [1:2:3:4, 1:2:3:4, .], b2 = [1:2:3:4, 1:2:3:4, .]} and my csv saving function: sdata = viewmodel.savehash. log.d(tag, "csv view: ${sdata.keys}") log.d(tag, "csv view: ${sdata.values.size}"). To convert a hashmap to a csv file in kotlin, you can iterate over the key value pairs in the hashmap and write them to a csv file using a csv writer library such as apache commons csv or opencsv. first, create a csv writer object and write the header row with the keys of the hashmap.

Converting Hashmap To Csv In Kotlin Android Stack Overflow Writing a csv file is actually much easier without any library: fun outputstream.writecsv(movies: list) { val writer = bufferedwriter() writer.write(""""year", "score", "title"""") writer.newline() movies.foreach { writer.write("${it.year}, ${it.score}, \"${it.title}\"") writer.newline() } writer.flush() }. I am fairly new to kotlin, and have wanted to change the way to save my csv file. currently my hashmap is : private var sdata:mutablemap> = mutablemapof> () and my data looks like this : {a1 = [1:2:3:4, 1:2:3:4, ….], b2 = [1:2:3:4, 1:2:3:4,….]}. Kotlin csv tutorial shows how to read and write csv files in kotlin. we use the opencsv and kotlin csv libraries. Introduction and deep dive into casting csv, my open source kotlin library to automagically read and write csv with a one liner using kotlin data classes and reflection.

Converting Hashmap To Csv In Kotlin Android Stack Overflow Kotlin csv tutorial shows how to read and write csv files in kotlin. we use the opencsv and kotlin csv libraries. Introduction and deep dive into casting csv, my open source kotlin library to automagically read and write csv with a one liner using kotlin data classes and reflection. In this article, we will explore how to efficiently process csv files using kotlin’s file api. the flexibility and power of these api allow you to read, write, and manipulate csv data seamlessly in a kotlin application. As part of kotlin's collections framework, hashmap is ideal for scenarios where fast data retrieval and efficient storage are essential. in this guide, we will delve deep into kotlin hashmap, its methods, properties, and practical applications, complete with examples and best practices. Val valuesseparator = "," val lineterminator = "\r\n" write header, overwrite file if it has existed csv.writetext(savehash.keys.jointostring(separator = valuesseparator, postfix = lineterminator)) write rows val nrows = savehash.values.first().size if it's guaranteed that size of all lists is the same. Learn how to effectively create and return a csv file in kotlin, ensuring resources are properly managed using 'use' blocks and kotlin's scope functions.