YordanGeorgiev

# how-to checkout, aka start working on another branch 
git checkout another-non-current-branch-name

# how-to checkout, aka start working on another branch and overwrite all changes !!!
git checkout another-non-current-branch-name --force

# how-to get a file from another branch ( herewith develop ) 
git checkout develop -- src/main/scala/com/company/path/to/class/CoolTrait.scala

# how-to get a file from another branch ( herewith develop ) and overwrite it

YordanGeorgiev

# save your current working copy into the git stash
git stash

# check what there is in the git stash 
git stash list

# how-to remove a stash item 
git stash drop stash@{0}

# how-to pick a git stash 

YordanGeorgiev

digraph {
  label=" \n\n simplified workflow \n control flow diagram ";
  edge[color=maroon,arrowsize=.7 ,len=2.0];
  node[shape=box,style="filled,rounded",color=cornflowerblue,fontcolor=white, fontsize=12, fixedsize=true,width = 6.0, height = .75];
  node[shape="diamond",style="filled",color=cornflowerblue,fontcolor=white, fontsize=12,fixedsize=true,width = 7.0, height = .75 ];
  node[shape="circle", style="filled,rounded",color=cornflowerblue,fontcolor=white, fontsize=12, fixedsize=true,width = 1.25 ];

  start_workflow[shape="circle",label="start the \n workflow"];
  landing_dir[shape="box", label=" scan the \n landing  dir "];
  workflow_stop_on_conf_error[shape="circle", label="workflow stop"];

YordanGeorgiev

# how-to rebase your feature branch into develop quickly 

# check the status
git status 

# check the git log
git log --pretty --format='%h %ai %<(15)%an ::: %s'

# set your current branch , make a backup of it , caveat minute precision
curr_branch=$(git rev-parse --abbrev-ref HEAD); git branch "$curr_branch"--$(date "+%Y%m%d_%H%M"); git branch -a | grep $curr_branch | sort -nr

YordanGeorgiev

try {
   throw new CustomValidationException1( CustomErrorCode.STUPID_FAIL_1
    "could be throw new CustomValidationException2")
} catch {
   case e
    if (e.isInstanceOf[CustomValidationException1] || e
        .isInstanceOf[CustomValidationException2]) => {
      // run a common handling for the both custom exceptions
      println(e.getMessage)
      println(e.errorCode.toString) // an example of common behaviour 

YordanGeorgiev

#!/usr/bin/env bash

set +x

echo "checking for own todo left-overs ... "$(grep -ri 'todo:ygeorgie' . | grep -v 'pre-commit' | wc -l)" found."
grep -rnHi 'todo:ygeorgie' . | grep -v 'pre-commit'
sleep 2

set -e
echo "running scalafmt tasks ..."

YordanGeorgiev

realm=Artifactory Realm
host=company-artifactory.net
user=cuser
password=cpwd
// eof file /Users/phz/.ivy2/credential
// check also the following file: ~/.sbt/0.13/credentials.sbt

YordanGeorgiev

import org.apache.hadoop.fs.{FileAlreadyExistsException, FileSystem, FileUtil, Path}

    val srcFileSystem: FileSystem = FileSystemUtil
      .apply(spark.sparkContext.hadoopConfiguration)
      .getFileSystem(sourceFile)
    val dstFileSystem: FileSystem = FileSystemUtil
      .apply(spark.sparkContext.hadoopConfiguration)
      .getFileSystem(sourceFile)

    FileUtil.copy(

YordanGeorgiev

// add some stats for each test
testOptions in Test += Tests.Argument(TestFrameworks.ScalaTest, "-oD")

// might or might not suits your reqs
fork in Test := true

// might or might not suit your reqs
parallelExecution in Test := false

// the verbosity level after issuing the sbt test command

YordanGeorgiev

// pick randomly a file type to generate a valid dataframe for
val random = math.random
val randomType : RandomType = {
  random match {
    case a if (random >= 0 && random < 0.33) => {
      RandomType.Type1
    }
    case b if (random >= 0.33 && random < 0.66) => {
      RandomType.Type2
    }