1. Not being able to rely on recursion makes me sad.
2. "Downwards macro-args" in C:
3. I am fast becoming acquainted with gdb.#define MY_ENUM_LIST(m) \
m(RED, 0), \
m(GREEN, 1), \
m(BLUE, 2)
#define DEF_ENUM_ENTRY(c, v) c = v
#define QUOTE_ENUM_ENTRY(c, v) #c
typedef enum rgb {
MY_ENUM_LIST(DEF_ENUM_ENTRY)
} rgb;
const char *rgb_names[] = {
MY_ENUM_LIST(QUOTE_ENUM_ENTRY)
};
4. And a few choice command-line shortcuts really save extraordinary amounts of time. My new fav: the !? bash-history shortcut.
9 comments:
Whoa!
Okay, re: #2. I get the rgb typedef... But what does is mean to say #RED or #GREEN in C?
It's a CPP-ism, not a C-ism-- when you prefix a macro argument with # it expands into the string literal representing the token source.
Are you hep to bash command completion? Just learned about that neato feature recently.
I use C-r to search backwards in my command history, is that the same thing?
Admittedly, I use zsh
If you're going to go the preprocessor route, you should take a peek at the Boost Preprocessor Library. Amazing/scary what you can do with it.
IIRC, C99's preprocessor is expressive enough to write a small lisp interpreter.
Now I remember why I'm writing my own browser and not dealing with yours ;-)
gdb tip: make command scripts.
e.g. I make a file, 'gdbcmds' that look like:
b 'avmplus::MathClass::pow'
r -Dinterp ../../interp64_busted.abc
finish
finish
finish
step
step
next
next
And then I run my binary like so:
% gdb avmshell -x gdbcmds
Saves a lot of time reestablishing a context where I found some behavior I want to investigate, which can involve a lot of retyping (and more importantly, rethinking and missteps!).
Of course a script like the one above won't stay useful for very long, but its just meant to be a throwaway during a single day.
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