Changes between Version 120 and Version 121 of j2p

Timestamp:

09/03/24 09:41:36 (3 months ago)

Author:

wouter

Comment:

--

j2p

@@ -375 +375 @@
 ||I get an error {{{UnboundLocalError: local variable ... referenced before assignment}}} (where ... is a variable name)||Usually this happens if the variable has a name that collides with a method name or library in python, eg "list". Rename the variable so that it is not colliding||
 ||I get "Python can not handle overloaded methods that use type vars"||This happens if you overloaded a method (you have two or more methods with the same method name) and one of them uses a type var (you have <T> and use T in the method declaration). Python does not support overloading. none of the existing libraries to add this functionality can handle type variables.||
+||It seems the python code uses the wrong values in my lambda expression||There is a subtle but essential scoping difference between java and python. In python, a local variable continues living even if it goes outside of scope and can be changed. If such a change happen, the lambda will use the changed value. Python only keeps the current value if a new variable is created, eg by a method call||