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41 lines
1.1 KiB
Groovy
41 lines
1.1 KiB
Groovy
10 years ago
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//http://groovy.codehaus.org/Martin+Fowler%27s+closure+examples+in+Groovy
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class Employee {
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def name, salary
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boolean manager
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String toString() { return name }
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}
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def emps = [new Employee(name:'Guillaume', manager:true, salary:200),
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new Employee(name:'Graeme', manager:true, salary:200),
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new Employee(name:'Dierk', manager:false, salary:151),
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new Employee(name:'Bernd', manager:false, salary:50)]
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def managers(emps) {
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emps.findAll { e -> e.isManager() }
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}
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assert emps[0..1] == managers(emps) // [Guillaume, Graeme]
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def highPaid(emps) {
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threshold = 150
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emps.findAll { e -> e.salary > threshold }
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}
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assert emps[0..2] == highPaid(emps) // [Guillaume, Graeme, Dierk]
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def paidMore(amount) {
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{ e -> e.salary > amount}
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}
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def highPaid = paidMore(150)
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assert highPaid(emps[0]) // true
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assert emps[0..2] == emps.findAll(highPaid)
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def filename = 'test.txt'
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new File(filename).withReader{ reader -> doSomethingWith(reader) }
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def readersText
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def doSomethingWith(reader) { readersText = reader.text }
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assert new File(filename).text == readersText
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