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Another way of checking List.contains and some headers

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Tim Yates 2013-09-02 13:02:53 +01:00
parent 6f444bece4
commit 95058aea96
1 changed files with 14 additions and 1 deletions
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15
groovy.html.markdown
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@ -74,20 +74,33 @@ technologies.remove("Griffon")
// Subtraction works also // Subtraction works also
technologies = technologies - 'Grails' technologies = technologies - 'Grails'
/*** Iterating Lists ***/
// Iterate over elements of a list // Iterate over elements of a list
technologies.each { println "Technology: $it"} technologies.each { println "Technology: $it"}
technologies.eachWithIndex { it, i -> println "$i: $it"} technologies.eachWithIndex { it, i -> println "$i: $it"}
/*** Checking List contents ***/
//Evaluate if a list contains element(s) (boolean) //Evaluate if a list contains element(s) (boolean)
technologies.contains('Groovy') contained = technologies.contains( 'Groovy' )
// Or
contained = 'Groovy' in technologies
// Check for multiple contents
technologies.containsAll(['Groovy','Grails']) technologies.containsAll(['Groovy','Grails'])
/*** Sorting Lists ***/
// Sort a list (mutates original list) // Sort a list (mutates original list)
technologies.sort() technologies.sort()
// To sort without mutating original, you can do: // To sort without mutating original, you can do:
sortedTechnologies = technologies.sort( false ) sortedTechnologies = technologies.sort( false )
/*** Manipulating Lists ***/
//Replace all elements in the list //Replace all elements in the list
Collections.replaceAll(technologies, 'Gradle', 'gradle') Collections.replaceAll(technologies, 'Gradle', 'gradle')