Recently, I start to use dlang in competitive programming. There are 3 dlang compiler, "DMD", "LDC", "GDC".

In competitive programming, best choice is "LDC", but in many online judge, we can use only "DMD" or "GDC".

I hope to many online judge install "LDC", so I write this blog.

Compiler compare

• DMD : Official compiler. Can use latest language version. Moderate Fast.
• LDC : based on llvm. Moderate new. Very Fast.
• GDC : based on gcc. Not new, Moderate Fast.

How to install ldc

1. Go to github's release page https://github.com/ldc-developers/ldc/releases
2. Download ldc(If you use 64bit-linux, ldc2-1.2.0-linux-x86_64.tar.xz, in now)
3. Extract
4. ADD /your/download/path/ldc2-1.2.0-linux-x86_64/bin to $PATH.

How to use ldc

• Debug mode : ldc2 -d-debug A.d

• Release mode(and optimize) : ldc2 -O -release A.d