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Merge pull request #1368 from Ribeiro/master
Added The Elvis Operator to Groovy docs - Issue #1181
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@@ -99,7 +99,7 @@ technologies.sort()
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// To sort without mutating original, you can do:
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// To sort without mutating original, you can do:
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sortedTechnologies = technologies.sort( false )
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sortedTechnologies = technologies.sort( false )
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/*** Manipulating Lists ***/
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/*** Manipulating Lists ***/e
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//Replace all elements in the list
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//Replace all elements in the list
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Collections.replaceAll(technologies, 'Gradle', 'gradle')
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Collections.replaceAll(technologies, 'Gradle', 'gradle')
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@@ -200,6 +200,14 @@ def y = 10
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def x = (y > 1) ? "worked" : "failed"
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def x = (y > 1) ? "worked" : "failed"
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assert x == "worked"
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assert x == "worked"
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//Groovy supports 'The Elvis Operator' too!
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//Instead of using the ternary operator:
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displayName = user.name ? user.name : 'Anonymous'
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//We can write it:
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displayName = user.name ?: 'Anonymous'
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//For loop
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//For loop
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//Iterate over a range
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//Iterate over a range
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def x = 0
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def x = 0
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@@ -422,6 +430,3 @@ Join a [Groovy user group](http://www.groovy-lang.org/usergroups.html)
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[1] http://roshandawrani.wordpress.com/2010/10/18/groovy-new-feature-closures-can-now-memorize-their-results/
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[1] http://roshandawrani.wordpress.com/2010/10/18/groovy-new-feature-closures-can-now-memorize-their-results/
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[2] http://www.solutionsiq.com/resources/agileiq-blog/bid/72880/Programming-with-Groovy-Trampoline-and-Memoize
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[2] http://www.solutionsiq.com/resources/agileiq-blog/bid/72880/Programming-with-Groovy-Trampoline-and-Memoize
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[3] http://mrhaki.blogspot.mx/2011/05/groovy-goodness-cache-closure-results.html
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[3] http://mrhaki.blogspot.mx/2011/05/groovy-goodness-cache-closure-results.html
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