On 2011-12-05 10:10, Marco Leise wrote:
Am 04.12.2011, 21:17 Uhr, schrieb Adam D. Ruppe
<destructiona...@gmail.com>:
Jacob Carlborg Wrote:
If you like the idea there, but want something a lot more conservative,
in my html.d (in here:
https://github.com/adamdruppe/misc-stuff-including-D-programming-language-web-stuff
)
there's now a JavascriptMacroExpander class which pre-processes
javascript.
The only build in function it provides right now is foreach() (just
because I find
it's lack to be the easiest thing to take care of...) but the macro
system might
be useful too for certain things.
Again, it's just a preprocessor, so you drop stuff like this into the
middle of
regular js code:
¤foreach(element; document.querySelectorAll("p")) {
element.style.color = "red";
}
converts to
var arsd_foreach_loop_temporary_2 = document.querySelectorAll("p");
for(var arsd_foreach_loop_counter_1 = 0; arsd_foreach_loop_counter_1 <
arsd_foreach_loop_temporary_2.length; arsd_foreach_loop_counter_1++) {
var element = arsd_foreach_loop_temporary_2[arsd_foreach_loop_counter_1];
element.style.color = "red";
}
There is also this macro in the JavaScript plugin for Eclipse:
for (var ${index} = 0; ${index} < ${array}.length; ${index}++) {
var ${array_element} = ${array}[${index}];
${cursor}
}
This is really one of the largest shortcomings of the language that can
not be explained with a simple design choice.
CoffeeScript makes it a correct for-each loop:
for e in arr
# do something with the element "e"
--
/Jacob Carlborg
