Added writing a row from variable number of arguments

[blackmo18]

I think to be able to write a variable number of arguments is nice also without creating a list before hand.

example:

csvWriter().open(testFileName) {
    writeRow("a", "b", "c")
    writeRow("d", "e", "f")
    writeRow(1,2,3)
    writeRow(date1, date2, date3)
}

Although Kotlin already supports a variable argument in instantiating a list with initial values, I think this one will be cleaner and less boiler plate on the user end.

[codecov]

Codecov Report

Merging #51 into master will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master      #51      +/-   ##
============================================
+ Coverage     95.49%   95.56%   +0.06%     
- Complexity      145      146       +1     
============================================
  Files            21       21              
  Lines           822      834      +12     
  Branches         65       65              
============================================
+ Hits            785      797      +12     
  Misses           15       15              
  Partials         22       22              

Impacted Files	Coverage Δ	Complexity Δ
...thub/doyaaaaaken/kotlincsv/client/CsvFileWriter.kt	92.15% <100.00%> (+0.15%)	25.00 <1.00> (+1.00)
.../doyaaaaaken/kotlincsv/client/CsvFileWriterTest.kt	97.43% <100.00%> (+0.42%)	4.00 <0.00> (ø)

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[blackmo18]

Do you think it is better to specify explicitly the implementation, so it would not look like cyclic?

   override fun writeRow(vararg entry: Any) {
        willWritePreTerminator()
        writeNext(entry.toList())
        willWriteEndTerminator()

        if (writer.checkError()) {
            throw IOException("Failed to write")
        }
    }

[doyaaaaaken]

No, I don't think. Leave this as it is.

[blackmo18]

Thanks for giving your thoughts.

[doyaaaaaken]

Thanks a lot @blackmo18 , but in my sense, it's a little awkward to receive vararg arguments as data.
writeRow("a", "b", "c")

And as another reason, I can't come up with useful usecase to use this API.
I think in most cases, people use fun writeRow(row: List<Any?>) API.

[blackmo18]

Yes, I think also it doesn't make sense in writing a large volume of entries in a file. On the other hand for small files, scripting, creating and exporting data models, and for testing purposes, it could be quite handy.

if you agree on this, I'll change the method signature into
fun writeRow(vararg entry: Any?) to make it uniform with the structure.

[doyaaaaaken]

OK, let's do so. Please go ahead and proceed with it.

[doyaaaaaken]

Also update README please.
Write description near this line.

kotlin-csv/README.md

Line 159 in 36e8cb8

writeRow(row2)

[blackmo18]

Hi @doyaaaaaken ,

already updated README and changed the method signature.