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| 1 | - | // Primitive integer is also an Object, so we can invoke methods |
| 1 | + | def nullVariable = null |
| 2 | - | println 'Loop 1' |
| 2 | + | def emptyString = '' |
| 3 | - | 3.times {
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| 3 | + | def zero = 0 |
| 4 | - | println it |
| 4 | + | |
| 5 | - | } |
| 5 | + | if(nullVariable) {
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| 6 | println 'A null variable is not evaluate to null' | |
| 7 | } | |
| 8 | else {
| |
| 9 | println 'A null variable is evaluate to null' | |
| 10 | } | |
| 11 | ||
| 12 | if(emptyString) {
| |
| 13 | println 'An empty string is not evaluate to null' | |
| 14 | } | |
| 15 | else {
| |
| 16 | println 'An empty string is evaluate to null' | |
| 17 | } | |
| 18 | ||
| 19 | if(zero) {
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| 20 | println 'zero is not evaluate to null' | |
| 21 | } | |
| 22 | else {
| |
| 23 | println 'zero is evaluate to null' | |
| 24 | } |
