Invalid operands to binary expression double and double c++


In addition to being fast and functional, we aim to make Clang extremely user friendly. As far as a command-line compiler goes, this basically boils down to making the diagnostics error and warning messages generated by the compiler be as useful as possible.

There are several ways that we do this. This section talks about the experience provided by the command line compiler, contrasting Clang output to GCC 4. First, all diagnostics produced by clang include full column number information.

The clang command-line invalid operands to binary expression double and double c++ driver uses this information to print "point diagnostics". IDEs can use the information to display in-line error markup. This is nice because it makes it very easy to understand exactly what is wrong in a particular piece of code. This makes it really easy to jump to the problem and helps when multiple instances of the same character occur on a line.

We'll revisit this more in following examples. Note that modern versions of GCC have followed Clang's lead, and are now able to give a column for a diagnostic, and include a snippet of source text in the result. However, Clang's column number is much more accurate, pointing at the problematic format specifier, rather than the character the parser had reached when the problem was detected.

Also, Clang's diagnostic is colored by default, making it easier to distinguish from nearby text. Clang captures and accurately tracks range information for expressions, statements, and other constructs in your program and uses this to make diagnostics highlight related information. In the following somewhat nonsensical example you can see that you don't even need to see the original source code to invalid operands to binary expression double and double c++ what is wrong based on the Clang error.

Because clang prints a point, you know exactly which plus it is complaining about. The range information highlights the left and invalid operands to binary expression double and double c++ side of the plus which makes it immediately obvious what the compiler is talking about. Range information is very useful for cases involving precedence issues and many other cases.

A detail is that we have tried really hard to make the diagnostics that come out of clang contain exactly the pertinent information about what is wrong and why. In the example above, we tell you what the inferred types are for the left and right hand sides, and we don't repeat what is obvious from the point e.

Many other examples abound. This sort of attention to detail makes it much easier to understand and fix problems quickly. Many programmers use high-level invalid operands to binary expression double and double c++ defined types, typedefs, and other syntactic sugar to refer to types in their program. This is useful because they can abbreviate otherwise very long types and it is useful to preserve the typename in diagnostics.

However, sometimes very simple typedefs can wrap trivial types and it is important to strip off the typedef to understand what is going on. Clang aims to handle both cases well. The following example shows where it is important to preserve a typedef in C. The following example shows where it is useful for the compiler to expose underlying details of a typedef.

For example, if we take a small snippet of code such as: Server const' and ':: When Clang produces a diagnostic about a particular problem that it can work around e. In the following example, Clang warns about the use of a GCC extension that has been considered obsolete since The underlined code should be removed, then replaced with the code below the point line ".

Moreso when part of an error message. Instead of just printing out the type name, Clang has enough information to remove the common elements invalid operands to binary expression double and double c++ highlight the differences. To show the template structure more clearly, the templated type can also be printed as an indented text tree. Many errors happen in macros that are sometimes deeply nested. With traditional compilers, you need to dig deep into the definition of the macro to understand how you got into trouble.

The following simple example shows how Clang helps you out by automatically printing instantiation information and nested range information for diagnostics as they are instantiated through macros and also shows how some of the other pieces work in a bigger example.

Here's another real world warning that occurs in the "window" Unix package which implements the "wwopen" class of APIs:. In practice, we've found that Clang's treatment of macros is actually more useful in multiply nested macros that in simple ones.

Finally, we have put a lot of work polishing the little things, because little things add up over time and contribute to a great user experience. The following example shows that we recover from the simple case of forgetting a invalid operands to binary expression double and double c++ after a struct definition much better than GCC.

The following example shows that we diagnose and recover from a missing typename keyword well, even in complex circumstances where GCC cannot cope. While each of these details is minor, we feel that they all add up to provide a much more polished experience.

Quick Links Testing Coverage. Expressive Diagnostics In addition to being fast and functional, we aim to make Clang extremely user friendly. Column Numbers and Caret Diagnostics First, all diagnostics produced by clang include full column number information.

In function 'void f ': Range Highlighting for Related Text Clang captures and accurately tracks range information for expressions, statements, and other constructs in your program and uses this to make diagnostics highlight related information. In function 'int f int, int ': Quality of Implementation and Attention to Detail Finally, we have put a lot of work polishing the little things, because little things add up over time and contribute to a great user experience.

In function 'void g ':

The machine specs are currently OS X Yosemite:. On this machine, there is Xcode Version 6. After a ton of problems, I managed to have something of an xcode project file, that looks like it is compiling, except that it fails here. Note that I already cloned the dependencies from https: Invalid operands to binary expression 'const Poco:: MediaType' and 'const Poco:: Hi sdaau — what version of openFrameworks are you using?

Currently everything should be working with the master branch of openFrameworks or 0. Just make sure all of the addons ofxHTTP, etc are using the develop branch. So here is this xcode project only the. Yeah, it is probably just a gray box. I think all of the HTML text comes out in the console. Sounds like you are on the right track. As soon as 0. Invalid operands to binary expression double and double c++, many thanks again - now it seems, everything related to ofxMaps and examples works fine….

Problem compiling ofxMaps on OS X x-code. The machine specs are currently OS X Yosemite: Macintosh HD Boot Mode: Mon Mar 23 Anyways, this example, including the. The log after doing: In file included from. The error during make is quite similar - except it happens during compiling a different file: Invalid operands to binary expression double and double c++ in advance for any answers, Cheers! I also tried the following: Hi bakercpMany thanks for the response! Sun Sep 13 Tue Apr 21 Fri Aug 7 Hi bakercpThanks again for the response!

Just a note for Mac noobs: Anyways, many thanks again - now it seems, everything related to ofxMaps and examples works fine… Cheers!

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