# Customizing Compilation Error Messages Formatting a Compile-Time String During Substitution Failure Patrick Roberts, P.E. Principal Software Engineer ![Image](/uploads/documents/8/b/f/4/8bf4eba3

## CPPCON / 16TH SEPTEMBER 2020 ## JUST-IN-TIME COMPILATION: THE NEXT BIG THING? BEN DEANE & KRIS JUSIAK - QUANTLAB FINANCIAL ## AGENDA ## AGENDA ## • MOTIVATION ## AGENDA ## • MOTIVATION • EXISTING NORM": IT'S LIKE THE APPLICATION (/LIBRARY) IS THE COMPILER... - JUST-IN-TIME (JIT) IS COMPILATION AT THE POINT OF NEED ## WHAT IS JITTING? - INSTEAD OF AHEAD-OF-TIME (AOT), AKA "THE NORM": NORM": IT'S LIKE THE APPLICATION (/LIBRARY) IS THE COMPILER... - JUST-IN-TIME (JIT) IS COMPILATION AT THE POINT OF NEED - IT'S LIKE THE APPLICATION (/LIBRARY) IS THE COMPILER... ## WHY JIT-慈PILE

## +24 ## Beyond Compilation Databases to Support C++ Modules: Build Databases ## BEN BOECKEL ## Who am I? • 15 years working on build systems and software process • CMake developer ○ Designing and build systems xmake □ bazel ## Outline 1. What are compilation databases? 2. How do modules change the status quo? 3. Build databases ## Compilation Databases: Overview • JSON document • Array of JSON (optional) ☐ Arguments (list of strings) or command (single string, shell escaped) ## Today: Compilation Databases • Specified by the Clang project https://clang.llvm.org/docs/JSONCompilationDatabase

_1.jpg) Hopefully my explanation of interpreter whet your appetite on this: computation and compilation can occur in a bunch of places, at different points in time. ## THOSE WHO CANNOT REMEMBER THE ed.) Aycock, J. 2003. A Brief History of Just-In-Time Bastien, JF. 2020. CppCon—Just-in-Time compilation Van Eerd, T. 2021. CppCon—SOLID, Revisited While researching this talk I came upon this most [Image](/uploads/documents/d/0/a/d/d0ad97dd1fc1c252d99c48a4d1048dc1/p8_1.jpg) Since computation and compilation can occur in different places and time, we ought to look at where those places and times have historically

the GitHub Agda page. This is the manual for the Agda programming language, its type checking, compilation and editing system and related resources/tools. The latest PDF version of this manual can be downloaded the Agda language is given in chapter Language Reference. Guidance on how the Agda editing and compilation system can be used can be found in chapter Tools. Getting Started ### 2.1 What is Agda Static values The STATIC pragma can be used to mark definitions which should be normalised before compilation. The typical use case for this is to mark the interpreter of an embedded language as STATIC: {-#

multiple dispatch, and good performance, achieved using type inference and just-in-time (JIT) compilation, implemented using LLVM. It is multi-paradigm, combining features of imperative, functional, and called a "run-time type" in object-oriented languages where the combination of static compilation with polymorphism makes this distinction significant. - Only values, not variables, have types must be explicitly specified by the programmer. Thus, the example expression 1 + 1.5 would be a compilation error in both Ada and ML. Instead one must write $ \text{real}(1) + 1.5 $ , explicitly converting

and good performance, achieved using type inference and just-in-time (JIT) compilation (and optional ahead-of-time compilation), implemented using LLVM. It is multi-paradigm, combining features of imperative for the actual argument types passed by the caller. For example, calling fib(1) will trigger the compilation of specialized version of fib optimized specifically for Int arguments, which is then re-used if called a "run-time type" in object-oriented languages where the combination of static compilation with polymorphism makes this distinction significant. • Only values, not variables, have types

multiple dispatch, and good performance, achieved using type inference and just-in-time (JIT) compilation, implemented using LLVM. It is multi-paradigm, combining features of imperative, functional, and for the actual argument types passed by the caller. For example, calling fib(1) will trigger the compilation of specialized version of fib optimized specifically for Int arguments, which is then re-used if called a "run-time type" in object-oriented languages where the combination of static compilation with polymorphism makes this distinction significant. • Only values, not variables, have types

and good performance, achieved using type inference and just-in-time (JIT) compilation (and optional ahead-of-time compilation), implemented using LLVM. It is multi-paradigm, combining features of imperative for the actual argument types passed by the caller. For example, calling fib(1) will trigger the compilation of specialized version of fib optimized specifically for Int arguments, which is then re-used if called a "run-time type" in object-oriented languages where the combination of static compilation with polymorphism makes this distinction significant. • Only values, not variables, have types

and good performance, achieved using type inference and just-in-time (JIT) compilation (and optional ahead-of-time compilation), implemented using LLVM. It is multi-paradigm, combining features of imperative for the actual argument types passed by the caller. For example, calling fib(1) will trigger the compilation of specialized version of fib optimized specifically for Int arguments, which is then re-used if called a "run-time type" in object-oriented languages where the combination of static compilation with polymorphism makes this distinction significant. • Only values, not variables, have types