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jashkenas--coffeescript/lib/helpers.js
2010-11-01 23:58:03 -04:00

63 lines
1.6 KiB
JavaScript

(function() {
var extend, flatten;
exports.starts = function(string, literal, start) {
return literal === string.substr(start, literal.length);
};
exports.ends = function(string, literal, back) {
var len;
len = literal.length;
return literal === string.substr(string.length - len - (back || 0), len);
};
exports.compact = function(array) {
var item, _i, _len, _result;
_result = [];
for (_i = 0, _len = array.length; _i < _len; _i++) {
item = array[_i];
if (item) {
_result.push(item);
}
}
return _result;
};
exports.count = function(string, letter) {
var num, pos;
num = pos = 0;
while (pos = 1 + string.indexOf(letter, pos)) {
num++;
}
return num;
};
exports.merge = function(options, overrides) {
return extend(extend({}, options), overrides);
};
extend = exports.extend = function(object, properties) {
var key, val;
for (key in properties) {
val = properties[key];
object[key] = val;
}
return object;
};
exports.flatten = flatten = function(array) {
var element, flattened, _i, _len;
flattened = [];
for (_i = 0, _len = array.length; _i < _len; _i++) {
element = array[_i];
if (element instanceof Array) {
flattened = flattened.concat(flatten(element));
} else {
flattened.push(element);
}
}
return flattened;
};
exports.del = function(obj, key) {
var val;
val = obj[key];
delete obj[key];
return val;
};
exports.last = function(array, back) {
return array[array.length - (back || 0) - 1];
};
}).call(this);