warnings

问题 This Question is about getting the gcc compiler to warn when you make a typo and initialize a variable with itself. int f() { int i = i; return i; } It turns out you need the -Winit-self flag in addition to -Wuninitialized : -Winit-self (C, C++, Objective-C and Objective-C++ only) Warn about uninitialized variables which are initialized with themselves. Note this option can only be used with the -Wuninitialized option, which in turn only works with -O1 and above. My question is: Why is this

问题 This Question is about getting the gcc compiler to warn when you make a typo and initialize a variable with itself. int f() { int i = i; return i; } It turns out you need the -Winit-self flag in addition to -Wuninitialized : -Winit-self (C, C++, Objective-C and Objective-C++ only) Warn about uninitialized variables which are initialized with themselves. Note this option can only be used with the -Wuninitialized option, which in turn only works with -O1 and above. My question is: Why is this

问题 Where/How could I get a list of all the java and javac's error and warning messages? 回答1: This page is I think what you need. 回答2: mindprod.com has a Java Glossary with runtime and compile time lists: http://mindprod.com/jgloss/errormessages.html Hope that helps 回答3: This list of exceptions is much more interesting than any of the above answers. It might not be as useful or as complete, but it's good reading nonetheless. 回答4: Do you mean Java Exception? http://java.sun.com/j2se/1.4.2/docs/api

问题 I have translated a Matlab function to create an Overcomplete Discrete Cosine Transform matrix to represent 1D signals in such vectorial space, to Python language. Matlab Function function D = odctdict(n,L) %ODCTDICT Overcomplete DCT dictionary. % D = ODCTDICT(N,L) returns the overcomplete DCT dictionary of size NxL % for signals of length N. % % See also ODCT2DICT, ODCT3DICT, ODCTNDICT. D = zeros(n,L); D(:,1) = 1/sqrt(n); for k = 2:L v = cos((0:n-1)*pi*(k-1)/L)'; v = v-mean(v); D(:,k) = v

问题 I disabled the Android Lint warning 'HardcodedText' for a specific XML file (it's for a numeric key pad with fix text for the digits). I can't find a way to re-enable it on this file ('Restore Defaults' or so), neither in Windows > Preferences > Android > Lint Error Checking nor in Project > Properties > Android Lint Preferences . Any idea on how to re-enable a disabled warning on file level? 回答1: Found it out myself: Lint puts the file "lint.xml" to the project with the dependant items.

问题 I disabled the Android Lint warning 'HardcodedText' for a specific XML file (it's for a numeric key pad with fix text for the digits). I can't find a way to re-enable it on this file ('Restore Defaults' or so), neither in Windows > Preferences > Android > Lint Error Checking nor in Project > Properties > Android Lint Preferences . Any idea on how to re-enable a disabled warning on file level? 回答1: Found it out myself: Lint puts the file "lint.xml" to the project with the dependant items.

问题 I'm new to Python and this is my first ever thing I've scripted and I'm just wondering what I can do to remove this warning: Warning (from warnings module): File "C:\Users\Luri\Desktop\Bot Stuff\ImageSaver.py", line 76 currentdiff=abs(anread[w,h])-abs(bnread[w,h]) RuntimeWarning: overflow encountered in ubyte_scalars I've tried Googling the answer and nothing that was clear to me came up as far as fixing this. I'm trying to write a program that will compare a continuously updating image that

问题 I just upgraded my MacBook to Catalina v10.15.1. When executing my python script which only does one thing, imports pysftp, I get the following output: WARNING: Executing a script that is loading libcrypto in an unsafe way. This will fail in a future version of macOS. Set the LIBRESSL_REDIRECT_STUB_ABORT=1 in the environment to force this into an error. Could somebody shed some light on why this is occurring? Thank you. 来源： https://stackoverflow.com/questions/58777860/why-is-python

问题 I'm porting my application from OCaml 4.02.3 to 4.03.0. Say you have the following in lexer.ml : type t = T [@@deriving sexp] let () = sexp_of_t |> ignore; print_endline "hai" I'm trying to run it as following: ocamlbuild -use-ocamlfind -pkg ppx_sexp_conv -cflags '-w @a-4-31' lexer.byte -- But I'm getting the following error: Warning 31: files lexer.cmo and /Users/vladimir/.opam/4.03.0+flambda/lib/ocaml/compiler-libs/ocamlcommon.cma(Lexer) both define a module named Lexer File "_none_", line

问题 I wonder why Visual Studio is raising this warning: Access of shared member, constant member, enum member or nested type through an instance My code: Dim a As ApplicationDeployment = deployment.Application.ApplicationDeployment.CurrentDeployment If System.Deployment.Application.ApplicationDeployment.IsNetworkDeployed Then If a.IsNetworkDeployed Then ' do something End If End If What implies "through an instance"? Also, why is this a "warning"? 回答1: Showing a warning is a design option. In C#,