[GROOVY-4904] Map.inject() doesn't accept closure with 3 arguments (collector, key, value), only 2 (collector, Map.Entry)

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.0
• Fix Version/s: 1.8.1
• Component/s: groovy-jdk
• Assignee: Paul King
• Reporter: Evgeny Goldin
• Created: 27/Jun/11 03:44
• Updated: 21/Jul/11 19:06
• Resolved: 27/Jun/11 20:23

Description

Map.inject() only accepts Closure with 2 arguments - inject() collection object and Map.Entry. It would be nice to have it accepting a 3-arguments Closure: inject() collection object, key, value.

groovy> assert [] == ['ss':'dd'].inject([]){ List l, Map.Entry e              -> l } 
groovy> assert [] == ['ss':'dd'].inject([]){ List l, Object key, Object value -> l } 
 
Exception thrown
Jun 27, 2011 5:42:15 AM org.codehaus.groovy.runtime.StackTraceUtils sanitize

WARNING: Sanitizing stacktrace:

groovy.lang.MissingMethodException: No signature of method: ConsoleScript8$_run_closure2.doCall() is applicable for argument types: (java.util.ArrayList, java.util.LinkedHashMap$Entry) values: [[], ss=dd]
Possible solutions: doCall(java.util.List, java.lang.Object, java.lang.Object)

	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:264)

	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:885)

	at groovy.lang.Closure.call(Closure.java:405)

	at org.codehaus.groovy.runtime.DefaultGroovyMethods.inject(DefaultGroovyMethods.java:2939)

	at org.codehaus.groovy.runtime.DefaultGroovyMethods.inject(DefaultGroovyMethods.java:2960)

	at org.codehaus.groovy.runtime.dgm$329.invoke(Unknown Source)

	at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite$PojoMetaMethodSiteNoUnwrapNoCoerce.invoke(PojoMetaMethodSite.java:271)

	at org.codehaus.groovy.runtime.callsite.PojoMetaMethodSite.call(PojoMetaMethodSite.java:53)

	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)

	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)

	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:120)

	at ConsoleScript8.run(ConsoleScript8:2)

	at groovy.lang.GroovyShell.runScriptOrMainOrTestOrRunnable(GroovyShell.java:266)

	at groovy.lang.GroovyShell.run(GroovyShell.java:517)

	at groovy.lang.GroovyShell.run(GroovyShell.java:172)

	at groovy.lang.GroovyShell$run.call(Unknown Source)

	at groovy.ui.Console$_runScriptImpl_closure16.doCall(Console.groovy:910)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

	at java.lang.reflect.Method.invoke(Method.java:597)

	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)

	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)

	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)

	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:885)

	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)

	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)

	at groovy.ui.Console$_runScriptImpl_closure16.doCall(Console.groovy)

	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

	at java.lang.reflect.Method.invoke(Method.java:597)

	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)

	at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)

	at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:272)

	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:885)

	at groovy.lang.Closure.call(Closure.java:405)

	at groovy.lang.Closure.call(Closure.java:399)

	at groovy.lang.Closure.run(Closure.java:483)

	at java.lang.Thread.run(Thread.java:662)

groovy.lang.MissingMethodException: No signature of method: ConsoleScript8$_run_closure2.doCall() is applicable for argument types: (java.util.ArrayList, java.util.LinkedHashMap$Entry) values: [[], ss=dd]
Possible solutions: doCall(java.util.List, java.lang.Object, java.lang.Object)

	at ConsoleScript8.run(ConsoleScript8:2)