bastman

// see discussion on alternatives here: https://discuss.kotlinlang.org/t/how-do-you-round-a-number-to-n-decimal-places/8843/15

fun Double.round(decimals:Int, roundingMode:RoundingMode=RoundingMode.HALF_EVEN):Double =
    toBigDecimal().setScale(decimals, roundingMode).toDouble()
    
# ???    
fun Double.round2(decimals: Int): Double {
    val locale:Locale = Locale.US
    val aTxt:String = String.format(locale, "%.${decimals+1}f", this)
    val aDouble:Double = aTxt.toDouble()

bastman

import com.fasterxml.jackson.databind.JsonNode
import com.fasterxml.jackson.databind.node.ArrayNode
import com.fasterxml.jackson.databind.node.JsonNodeFactory
import com.fasterxml.jackson.databind.node.ObjectNode
import io.burt.jmespath.Adapter
import io.burt.jmespath.JmesPath
import io.burt.jmespath.JmesPathType
import io.burt.jmespath.RuntimeConfiguration
import io.burt.jmespath.function.ArgumentConstraints
import io.burt.jmespath.function.BaseFunction

bastman

https://blog.timescale.com/tutorials/how-to-install-psql-on-mac-ubuntu-debian-windows/

bastman

SELECT my_id, COUNT(my_id) 
FROM my_table
GROUP BY my_id
HAVING COUNT(my_id) > 1;

bastman

$ kubectl create job --from=cronjob/<CRONJOB-NAME> <NEW-JOB-NAME>

e.g.:
$ kubectl create job --from=cronjob/my-cron my-cron-manual-001


function k8s-cronjob-run() {
  source_cronjob_name=$1
  [ -z "$source_cronjob_name" ] && echo "Please provide source-cronjob-name !" && return
  sink_run_id=$(date -u +"%Y-%m-%dt%H.%M.%Sz")

bastman

• https://www.charlesproxy.com/
• https://proxyman.io/
• https://mitmproxy.org/

bastman

Images[].{a:length(BlockDeviceMappings), b:@} | [?a>=`1`]
Images[?length(BlockDeviceMappings)>=`0`]

bastman

$ gradle init --type kotlin-application --dsl kotlin

bastman

fun PlatformTransactionManager.transactionTemplate(propagationBehavior:Int = TransactionDefinition.PROPAGATION_REQUIRED) = TransactionTemplate(this)
        .apply {
            this.propagationBehavior=propagationBehavior
        }

fun <T>TransactionTemplate.tryExecute(block:(TransactionStatus)->T):Try<T> = Try { this.execute(block) as T }

@Component
class MyTx() {

bastman

import java.math.*
fun main() {
    println("Hello, world!!!")
    val myValue=-1.25
    val out = BigDecimal(myValue).setScale(1, RoundingMode.HALF_UP).toDouble();
    println("$out")
}