Otherwise I'd say: generate all Object[] and primitive[] static methods that return you the length, then have method handles to them :-)
> On 09 Jan 2015, at 12:18, Jochen Theodorou <[email protected]> wrote: > > Hi Julien, > > https://bugs.openjdk.java.net/browse/JDK-8051447 suggests that the > performance of this method is not the best... though it suggest an equally > generic alternative, with which I may go. so thanks for the idea > > bye Jochen > > Am 09.01.2015 12:05, schrieb Julien Ponge: >> Hi Jochen, >> >> How about: >> >> lookup.findStatic(Array.class, "getLength", methodType(int.class, >> Object.class)) >> >> (java.lang.reflect.Array) >> >> That's what we use in Golo to provide "length/size" methods to arrays, e.g.: >> >> let a = [1, 2, 3] >> println(a: length()) >> >> - Julien >> >>> On 09 Jan 2015, at 12:05, Jochen Theodorou <[email protected]> wrote: >>> >>> Hi, >>> >>> is there a way to get the length of an array using method handles? Of >>> course I can write a small method to do that, but given the multitude of >>> primitive types this means a lot of small methods. So I was wondering if >>> there is a more elegant but still fast solution >>> >>> bye Jochen >>> >>> -- >>> Jochen "blackdrag" Theodorou - Groovy Project Tech Lead >>> blog: http://blackdragsview.blogspot.com/ >>> german groovy discussion newsgroup: de.comp.lang.misc >>> For Groovy programming sources visit http://groovy-lang.org >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "JVM Languages" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/jvm-languages. >>> For more options, visit https://groups.google.com/d/optout. >> > > > -- > Jochen "blackdrag" Theodorou - Groovy Project Tech Lead > blog: http://blackdragsview.blogspot.com/ > german groovy discussion newsgroup: de.comp.lang.misc > For Groovy programming sources visit http://groovy-lang.org > > -- > You received this message because you are subscribed to the Google Groups > "JVM Languages" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/jvm-languages. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "JVM Languages" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/jvm-languages. For more options, visit https://groups.google.com/d/optout.
