Ant
| Question (memorize) | Answer (memorize) |
|---|---|
<groovy> | run groovy code from ant |
<groovyc destdir="classes" | compile groovy code from ant |
| new AntBuilder().echo( "hi" ) | run ant echo (from groovy) |
| new AntBuilder().delete() { fileset( dir:".", includes:"**/*.abc" ) } | run ant delete (from groovy) |
| new AntBuilder().scp( file:"foo.txt", todir:"user:pass@server.com:.", trust:"true" ) | run ant scp (from groovy) |
Closures
| Question (memorize) | Answer (memorize) |
|---|---|
| c = { println "foo ${it}" } | create a closure |
| c = { a, b -> println "foo ${a} ${b}" } | create a closure (with 2 args) |
| c( "hey" ) c.call( "hey" ) | call a closure |
| l.collect( { ... } ) | apply closure to list |
| m.each( { key, value -> println key + "=" + value } ) | apply closure to map elements |
| "abc".replaceAll( "b", { ... } ) | Search and replace (using a closure) |
| "a aa".eachMatch( /a+/, { println "foo ${it[0]}" } ) | processing multiple matches (using closure) |
Misc advanced
| Question (memorize) | Answer (memorize) |
|---|---|
| sql = groovy.sql.Sql.newInstance( "jdbc:axiondb:foo", "", "", "org.axiondb.jdbc.AxionDriver" ) | get db connection works for all any jdbc driver |
| sql.execute("insert into t values ('a')") | insert db record |
| sql.eachRow("select * from t") { println "row ${it[0]}" } | execute db select |
| new org.codehaus.groovy.scriptom.ActiveXProxy( "Shell.Application" ).MinimizeAll() | minimize all windows |
| new org.codehaus.groovy.scriptom.ActiveXProxy( "WScript.Shell" ).popup( "Groovy popup!!" ) | popup dialog |
| http://groovy.codehaus.org/COM+Scripting | page showing install instructions |
More misc advanced
| Question (memorize) | Answer (memorize) |
|---|---|
| println "pwd".execute().text | run shell command |
| xml = new XmlSlurper().parseText(text) | parse xml |
| xml.elementA.elementB.text() | get element text from xml |
| for( e in xml.depthFirst() ) { ... } | traverse xml deapth-first |
| groovy -l 1960 -e "println line.reverse()" | listen on a port and run code on every line |
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