warnings

问题 What can I do to prevent the compiler from throwing the following warning Missing concrete implementation of setter 'MyClass.field' and getter 'MyClass.field' on the following code? import 'package:mock/mock.dart'; class MyClass { String field; } @proxy class MockMyClass extends Mock implements MyClass{} 回答1: Implement noSuchMethod(); When a class has a noSuchMethod() it implements any method. I assume this applies to getter/setter as well because they are just special methods (never tried

问题 I am a novice in swift and XCode so please forgive me the probably really messy code! When running my code I get the following warning: Warning: Attempt to present on which is already presenting I have already checked the forum and found a post regarding that issue....I applied the help suggested as in: if presentedViewController !== nil { self.presentViewController(alertController, animated: true, completion: nil) } else{ self.dismissViewControllerAnimated(false, completion: nil) self

问题 Can I disable the non-exhaustive pattern matches warning only for lambdas? I like the warning in general, but not for actual lambda literals like this: map (\(x:xs)->...) ls I think this code makes it pretty clear that I expect all the values of ls to always have at least one element, and there is no neat way to handle the error case in the lambda. (I guess I could move the pattern match into a case statement, but that would just be ugly.) 回答1: Yes, but only in GHC 7.2 onwards; pass -fno-warn

问题 Can I disable the non-exhaustive pattern matches warning only for lambdas? I like the warning in general, but not for actual lambda literals like this: map (\(x:xs)->...) ls I think this code makes it pretty clear that I expect all the values of ls to always have at least one element, and there is no neat way to handle the error case in the lambda. (I guess I could move the pattern match into a case statement, but that would just be ugly.) 回答1: Yes, but only in GHC 7.2 onwards; pass -fno-warn

问题 I use a class for detecting email addresses which uses static final booleans to configure the matching behavior. Since I upgraded to Eclipse 3.5 I get warnings about dead code, since Eclipse notices that one branch in this can not be reached: private static final boolean ALLOW_DOMAIN_LITERALS = false; private static final String domain = ALLOW_DOMAIN_LITERALS ? rfc2822Domain : rfc1035DomainName; Oddly enough it is happy with this: private static final String domain; static { if(ALLOW_DOMAIN

问题 I'm running a PHP script and continue to receive errors like: Notice: Undefined variable: my_variable_name in C:\wamp\www\mypath\index.php on line 10 Notice: Undefined index: my_index C:\wamp\www\mypath\index.php on line 11 Line 10 and 11 looks like this: echo "My variable value is: " . $my_variable_name; echo "My index value is: " . $my_array["my_index"]; What is the meaning of these error messages? Why do they appear all of a sudden? I used to use this script for years and I've never had

问题 I want to create a n*n list in python with most of the elements initialized with None. Then I will set some elements in a for loop, but in the line I set diagonal elements to be 0 , I got a warning highlight on [j] in PyCharm, saying: "Unexpected type(s): (int, int) Possible types: (int, None) (slice, Iterable[None]) Inspection info: This inspection detects type errors in function call expressions. Due to dynamic dispatch and duck typing, this is possible in a limited but useful number of

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I tried using the answer @Greg Snow provided in this question, but I keep getting a warning regardless of what I do. Can someone help with this:? > setAs

问题 This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center. Closed 6 years ago . I tried using the answer @Greg Snow provided in this question, but I keep getting a warning regardless of what I do. Can someone help with this:? > setAs

问题 Getting the following kinds of warnings when running most python scripts in the command line: /Library/Python/2.6/site-packages/virtualenvwrapper/hook_loader.py:16: UserWarning: Module pkg_resources was already imported from /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/pkg_resources.pyc, but /Library/Python/2.6/site-packages is being added to sys.path import pkg_resources /Library/Python/2.6/site-packages/virtualenvwrapper/hook_loader.py:16: UserWarning: Module