An error means that the compiler is physically unable to deal with your code. A warning means that the compiler is capable of dealing with your code, but it believe that what you have written is wrong in some way. It seems pretty clear cut to me – it should be a warning. Besides, what … Read more
There’s a principle called “eating your own dogfood”. By using a tool, you demonstrate the usefulness of the tool. It is often asked, “if the compiler for language X isn’t written in language X, why should I risk using it?” This of course only applies to languages suitable for the domain of compiler writing.
For C# I don’t believe there’s a specified hard limit. (Section 2.4.2 of the C# 5 spec doesn’t give a limit, for example.) Roslyn v2.2.0.61624 seems to have a limit of 1024 characters; this is way beyond the bounds of readability and even a sensible machine-generated name. For Java, section 3.8 of the spec states: … Read more
In years past, ignoring this use of the first column could cause bad things on a line printer, like page ejects — but when was the last time that you saw a line printer? Otherwise it was output device, compiler and OS dependent. The advice of “Fortran 95/2003 for Scientists and Engineers” was excellent for … Read more
I recommend you to read build document of Sublime Text 2. Here is the answer. In Sublime, click Tools -> Build System -> New Build System… For Windows user, type the following code and save: { “cmd” : [“gcc”, “$file_name”, “-o”, “${file_base_name}.exe”, “&&”, “${file_base_name}.exe”], “selector” : “source.c”, “shell” : true, “working_dir” : “$file_path” } For … Read more
The Go compiler is written in pure C and does not use the packages under go/. In the Go source tree, its lexer lives in src/cmd/gc/lex.c and its Bison grammar is src/cmd/gc/go.y. The go/ packages are used in tools like godoc, gofmt, and various go tool subcommands. Maybe someday they can be used to write … Read more
Estimating how long something like that might take is dependent on many different factors. For example, an experienced programmer can easily knock out a simple arithmetic expression evaluator in a couple of hours, with unit tests. But a novice programmer may have to learn about parsing techniques, recursive descent, abstract representation of expression trees, tree-walking … Read more
You need to take a 2-pass, or multi-pass approach: Languages like Java require a multi-pass compiler since the definition of x would not be required to come before the use: public class Example { public static void main(String [] args) { assert(x==0); x++; assert(x==1); } static int x=0; } There are various approaches, for example … Read more
I found the answer: to exclude the file from ARC, use the -fno-objc-arc flag in build phases>compile sources
Thanks to Holger, I successfully solved the problem. The issue was caused by the absence of tools.jar in the class path. This is due to the fact that Eclipse by default recognises the Java environment as a JRE instead of a JDK. On top of that, Java JDK may – or may not, depending on … Read more