bdkosher

// these 9 characters represent our days: 2 days of rain ('R') and 7 days of dryness ('D')
def days = 'RRDDDDDDD' as List

// number of trials to run; the bigger the number, the more accurate the probability
int trials = 10000 

// counter for the number of consecutive rainy days we see
int consecutiveRainyDays = 0 

// run the trials

bdkosher

@Grab(group='org.apache.pdfbox', module='pdfbox', version='2.0.21')
import org.apache.pdfbox.multipdf.PDFMergerUtility
import org.apache.pdfbox.io.MemoryUsageSetting

def dir = new File('C:\\Users\\Joe\\Documents\\pdfs')

def merger = new PDFMergerUtility();
(1..3).each { merger.addSource(new File(dir, "document_page${it}.pdf")) }
merger.destinationFileName = new File(dir, "document.pdf").absolutePath

bdkosher

When concrete classes are preferrable to interfaces

String vs. CharSequence
- better relays immutability?
- so widespread that it can be an inconvenience to accept a CharSequence and have to do something with it, like pass to another 3rd party library method

Exception vs. Throwable
- error details object in REST application, don't want people to attempt to create these if there's an Error

LocalDate vs. ChronoLocalDate

bdkosher

import java.time.temporal.*;

import static java.time.Month.OCTOBER;
import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
import static java.time.temporal.ChronoField.YEAR;

/**
 * Temporal fields that are commonly used within the Federal government.
 *
 * More fields may be added in the future (e.g. Leave Year, Bi-Weekly Pay Period)

bdkosher

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.Month;
import java.time.MonthDay;
import java.time.temporal.TemporalAdjusters;
import java.util.*;
import java.util.function.Function;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

bdkosher

@Grab(group='org.springframework.security', module='spring-security-core', version='3.2.5.RELEASE')
@Grab(group='org.springframework.security', module='spring-security-ldap', version='3.2.5.RELEASE')

import groovy.transform.*
import javax.naming.NamingException
import javax.naming.directory.Attribute
import javax.naming.directory.Attributes
import org.springframework.ldap.core.*
import org.springframework.security.ldap.*

bdkosher

println groovy.json.JsonOutput.prettyPrint(new File(args[0]).text)

bdkosher

import groovy.transform.*
import java.nio.*
import java.nio.charset.*

@Field CharsetDecoder cs = Charset.forName('UTF-8').newDecoder()
InputStream.metaClass.eachChunk << { int preferredChunkSize, Closure closure ->
    delegate.eachByte(preferredChunkSize) { buffer, bytesRead ->
        if (bytesRead == preferredChunkSize) {
            closure(buffer)
        } else if (bytesRead > 0) {

bdkosher

/*def imewi = Iterable.metaClass.eachWithIndex
def lmewi = List.metaClass.eachWithIndex
println imewi 
println lmewi

def iewi = Iterable.&eachWithIndex
def lewi = List.&eachWithIndex
*/
def eachWithLast = { Closure c ->
    int size = delegate.size()

bdkosher

package gov.uspto.iqs;

import java.time.DayOfWeek;
import java.util.Arrays;

public class SadCompiler {

    int sadInstanceOf(Object o) {
        if (o instanceof List) {
            return ((List) o).size();