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Clumpy Usage Guide

First things first:

<script type="text/javascript" src="Clumpy.js"></script>
<script type="text/javascript">
    var clumpy = new Clumpy();
</script>

Now onto the good stuff. As you may remember from the overview, here’s how to model a for loop in Clumpy:

var i;
clumpy.for_loop(
    function () { i = 0; },
    function () { return i < 100000; },
    function () { i++; },
    function () {
        // statements
    }
);

It looks a little strange, being so heavy on the functions, but you can see the resemblance it bears to a real for loop. A notable difference, though, is that the second function returns the result of the condition, where there is no return statement in a real for loop.

Reinventing the “While”

The methods that model while and do...while are similar to for_loop():

var i = 0;
clumpy.while_loop(
    function () { return i < 100000; },
    function () {
        // statements
    }
);
var i = 0;
clumpy.do_while_loop(
    function () {
        // statements
    },
    function () { return i < 100000; }
);

for...in loops are almost as straightforward:

var key, object = { ... };

// Real Loop
for (key in object) {
    // statements
}

// Loose Equivalent:
clumpy.for_in_loop(
    function () { return object; },
    function (key) {
        // statements
    }
);

// Strict Equivalent:
clumpy.for_in_loop(
    function () { return object; },
    function (k) {
        key = k;
        // statements
    }
);

The difference between the “loose” and “strict” equivalents is that the key parameter to the function is not the same key variable that’s declared outside the function. The strict example makes the value persist in the outer key.

Next Page: Chains

© Thomas Peri