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function curry(f) {
var args = slice(arguments, 1);
return function() { return f.apply(this, args.concat(slice(arguments))); };
};
function prog1(ret) {
if (ret instanceof Function)
ret = ret();
for (var i = 1, n = arguments.length; --n > 0; ++i)
arguments[i]();
return ret;
};
function array_to_hash(a) {
var ret = {};
for (var i = 0; i < a.length; ++i)
ret[a[i]] = true;
return ret;
};
function slice(a, start) {
return Array.prototype.slice.call(a, start || 0);
};
function characters(str) {
return str.split("");
};
function member(name, array) {
for (var i = array.length; --i >= 0;)
if (array[i] == name)
return true;
return false;
};
function find_if(func, array) {
for (var i = 0, n = array.length; i < n; ++i) {
if (func(array[i]))
return array[i];
}
};
function HOP(obj, prop) {
return Object.prototype.hasOwnProperty.call(obj, prop);
};
function repeat_string(str, i) {
if (i <= 0) return "";
if (i == 1) return str;
var d = repeat_string(str, i >> 1);
d += d;
if (i & 1) d += str;
return d;
};
function defaults(args, defs) {
var ret = {};
if (args === true)
args = {};
for (var i in defs) if (HOP(defs, i)) {
ret[i] = (args && HOP(args, i)) ? args[i] : defs[i];
}
return ret;
};
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