Is there any language similar to javascript but which can compile to binary?
Name:
Anonymous2008-12-24 12:46
How similar?
Name:
Anonymous2008-12-24 12:47
Scheme
Name:
Anonymous2008-12-24 13:10
>>2
Prototypes,type inference/no type declarations,C-like syntax,flexible functions with ability to return (functions)}.
Name:
Anonymous2008-12-24 13:18
(copied from wiki)
JavaScript supports all the structured programming syntax in C (e.g., if statements, while loops, switch statements, etc.). One partial exception is scoping: C-style block-level scoping is not supported. JavaScript 1.7, however, supports block-level scoping with the let keyword. Like C, JavaScript makes a distinction between expressions and statements.
[edit] Dynamic
dynamic typing
As in most scripting languages, types are associated with values, not variables. For example, a variable x could be bound to a number, then later rebound to a string. JavaScript supports various ways to test the type of an object, including duck typing.[10]
objects as associative arrays
JavaScript is almost entirely object-based. Objects are associative arrays, augmented with prototypes (see below). Object property names are associative array keys: obj.x = 10 and obj["x"] = 10 are equivalent, the dot notation being merely syntactic sugar. Properties and their values can be added, changed, or deleted at run-time. The properties of an object can also be enumerated via a for...in loop
Also String[index] as array elements
run-time evaluation(NOT REQUIRED)
JavaScript includes an eval function that can execute statements provided as strings at run-time.
[edit] Functional
first-class functions
Functions are first-class; they are objects themselves. As such, they have properties and can be passed around and interacted with like any other object.
inner functions and closures
Inner functions (functions defined within other functions) are created each time the outer function is invoked, and variables of the outer functions for that invocation continue to exist as long as the inner functions still exist, even after that invocation is finished (e.g. if the inner function was returned, it still has access to the outer function's variables) — this is the mechanism behind closures within JavaScript.
[edit] Prototype-based
prototypes
JavaScript uses prototypes instead of classes for defining object properties, including methods, and inheritance. It is possible to simulate many class-based features with prototypes in JavaScript.
functions as object constructors
Functions double as object constructors along with their typical role. Prefixing a function call with new creates a new object and calls that function with its local this keyword bound to that object for that invocation. The function's prototype property determines the new object's prototype.
functions as methods
Unlike many object-oriented languages, there is no distinction between a function definition and a method definition. Rather, the distinction occurs during function calling; a function can be called as a method. When a function is invoked as a method of an object, the function's local this keyword is bound to that object for that invocation.
[edit] Miscellaneous
run-time environment(A COMPILER IS REQUIRED)
JavaScript typically relies on a run-time environment (e.g. in a web browser) to provide objects and methods by which scripts can interact with "the outside world". (This is not a language feature per se, but it is common in most JavaScript implementations.)
variadic functions
An indefinite number of parameters can be passed to a function. The function can both access them through formal parameters and the local arguments object.
array and object literals
Like many scripting languages, arrays and objects (associative arrays in other languages) can each be created with a succinct shortcut syntax. In fact, these literals form the basis of the JSON data format.
regular expressions
JavaScript also supports regular expressions in a manner similar to Perl, which provide a concise and powerful syntax for text manipulation that is more sophisticated than the built-in string functions.
Name:
Anonymous2008-12-24 13:25
>>4
I don't know why C-like syntax would be important, but Lua does all the rest (and does it better).
Name:
Anonymous2008-12-24 13:30
>>6
C-Syntax is this:
abc(x,y,z){
if(x>0){y=do(x);if(!x){return y};
switch(y){
case 'what':;do_something();break;
default:
}}}
Name:
Anonymous2008-12-24 13:33
do
local oldprint = print -- Store current print function as oldprint
print = function(s) -- Redefine print function
if s == "foo" then
oldprint("bar")
else
oldprint(s)
end
end
end
can this be bracketised and run in lua or its FIOC?
Name:
Anonymous2008-12-24 13:35
this syntax sucks.Its mix of python and scheme
Name:
Anonymous2008-12-24 13:36
Lua:
do
end
what i want:
oldprint = print
print = function(s)
if(s == "foo"){oldprint("bar")}else{oldprint(s)}
Name:
Anonymous2008-12-24 13:40
do
local oldprint = print -- Store current print function as oldprint
print = function(s) -- Redefine print function
if s == "foo" then
oldprint("bar")
else
oldprint(s)
end
end
end
Lua:
function factorial(n)
if n == 0 then
return 1
else
return n * factorial(n - 1)
end
end
//notice the difference
Javascript:
function factorial(x){for(var i=x;i>0;i--){x=x*i};return x}
Name:
Anonymous2008-12-24 14:09
Lua:
fibs = { 1, 1 } -- Initial values for fibs[1] and fibs[2].
setmetatable(fibs, { -- Give fibs some magic behavior.
__index = function(name, n) -- Call this function if fibs[n] does not exist.
name[n] = name[n - 1] + name[n - 2] -- Calculate and memoize fibs[n].
return name[n]
end
})
Javascript:
function fibs(x){a=0;b=1;c=0;for(i=x;i>1;i--){c=a+b;a=b;b=c}return b}
Name:
Anonymous2008-12-24 14:19
>>13
FIXED:
function factorial(x){for(i=x-1;i>0;i--){x=x*i}return x}
Name:
Anonymous2008-12-24 14:22
JavaScript could be more concise:like instead of:
function factorial(x){for(i=x-1;i>0;i--){x=x*i}return x}
i'd like to:
factorial(x){for(i=x--;i>0;i--){x*=i};x}
Name:
Anonymous2008-12-24 14:26
or even more concise:
fact(x)={loop(x--){x*=i};x}
Name:
Anonymous2008-12-24 14:31
fact(x)={loop(x--){x*=i};x}
----explained
function fact(x){
loop x-1 times
multiply x by i(implicit loop counter) and save as x
return last expression;x
}
Jvascript(shortest function to return absolute value)
function abs(x){return (x>0)?x:-x}
Could be twice as short:
abs(x){x>0?x:-x}
Name:
Anonymous2008-12-24 14:55
For every wasted character i could write more code.
Shorter code is more productive:thats why Lua,Python and other "Explicit declarational" languages suck.
They waste the space with empty syntax.
>>13
Javascript:
function factorial(n)
{
if (n == 0)
return 1;
else
return n * factorial(n - 1);
}
--notice the difference
Lua:
function factorial(x)for i=1,x-1 do x=x*i end return x end
Name:
Anonymous2008-12-24 15:59
Uhh... isn't Javascript compiled these days?
Name:
Anonymous2008-12-24 16:00
>>28
end's and do's ruin the syntax
still the above recursive crap is never used in OPTIMIZED code.
Name:
Anonymous2008-12-24 16:01
>>29
the ngs compiler is linux only.
Java compilers make Javascripts into crappy java applets which load slower then original code and JVM to run.
Name:
Anonymous2008-12-24 16:03
>>28
Invisible block separators.Imagine such function 10 times larger.
Name:
Anonymous2008-12-24 16:05
function factorial(x)for i=1,x-1 do x=x*i end return x end
with separators.
//notice the difference
function factorial(x){for (i=1,x-1){ do x=x*i} end return x end}
Name:
Anonymous2008-12-24 16:09
>>32-33
What? Why are you adding invalid characters?
Name:
Anonymous2008-12-24 16:21
>>34
They aren't invalid,they are what your crappy language should have
instead of end/do and.
Name:
Anonymous2008-12-24 16:27
to write code efficiently you need to utilize punctuation such as {(;)},not introducing code words you need to type each time you close the block of code.