These functions are designed to make it easier to properly preserve the
sourcemap and tuple type in macros. This commit also modifies the threading
macros to make use of these functions.
Upvalues are stored in the symbol slots structure as well, but
since they are always live, we repurpose the death_pc field to
refer to the environment index that we want to look at at runtime.
Allow more easily importing modules from custom directories
without jumping through too many hoops. Technically, this was
possible before but required circumventing the built-in module/paths
and was just a hassle.
Also add entries to module/path (and module/add-path) to allow code
like the following.
(setdyn :my-libs "/home/me/janet-stuff/")
(import @my-libs/toolbox)
Intended for things like test harnesses where code might not
be installed to the usual directories.
Three reasons:
1. This same behavior is not documented on the `next` function
2. This function does not throw the error directly,
it only throws an error because `next` does.
3. Following the same idea as the previous commit, this behavior is
more or less implementation-defined for nonsensical types
> In dynamic languages, the usual idea is garbage in, garbage out.
Various other documentation cleanup.
> Remove the try. In dynamic languages, the usual idea is garbage in, garbage out. You misunderstood my point about the type error. “Test” functions are not special in that regard.
> - @bakpakin
This is just documentation of existing behavior, it does not change anything.
The reason index-of throws a type error on non-iterable types is because `next` does.
This is hardcoded into the JOP_NEXT opcode (see src/core/value.c:janet_next_impl).
Unfortunately, there is currently no corresponding `iterable?` check.
Note this actually changes behavior from a thin wrapper over `index-of`.
This is because `(index-of 3 3)` throws "error: expected iterable type, got 3"
This is significantly clearer than using (not (nil? (index-of col val)))
Most major programming languages offer some sort of contains function (Python, Java, C, Rust).
The only exception I know of is C.
Should make janet a bit easier to use. Also changes the
header to not expose the size of native mutexes and rwlocks, except
with janet_os_mutex_size and janet_os_rwlock_size.
