ADB Meetup #4 - Kotlin Puzzler

puzzler.ipynb

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   "source": [
    "## Kotlin Puzzler - ADB Meetup 4\n",
    "\n",
    "#### Esa Firman\n",
    "#### @Bukalapak"
   ]
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   "source": [
    "### Closure"
   ]
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    "val items = listOf(1,2,3)\n",
    "items.forEach { \n",
    "    print(it)\n",
    "    if(it >= 2){\n",
    "        return\n",
    "    }\n",
    "}\n",
    "print(\"Complete!\")"
   ]
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   "source": [
    "### Property Equality"
   ]
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   "source": [
    "data class SomeClass(val value: String)\n",
    "\n",
    "val a get() = 1\n",
    "val c get() = \"String\"\n",
    "val b get() = SomeClass(\"Value\")\n",
    "\n",
    "println(a == a)\n",
    "println(a === a)\n",
    "println(b == b)\n",
    "println(b === b)\n",
    "println(c == c)\n",
    "println(c === c)"
   ]
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   "source": [
    "### Fun operator"
   ]
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   "source": [
    "fun and(a: Boolean, b: Boolean) = a && b \n",
    "\n",
    "val firstValue = 1 \n",
    "val secondValue = 10\n",
    "\n",
    "print(and(firstValue < secondValue, firstValue > secondValue))"
   ]
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   "source": [
    "### Throw something"
   ]
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   "metadata": {},
   "outputs": [],
   "source": [
    "class ADBException : Exception(\"This is ADB's fault!\")\n",
    "\n",
    "throw throw throw ADBException()"
   ]
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   "source": [
    "### Two Lambda"
   ]
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   "source": [
    "typealias L = (String) -> Unit\n",
    "\n",
    "fun foo(one: L = {}, two: L = {}) {\n",
    "  one(\"one\")\n",
    "  two(\"two\")\n",
    "}\n",
    "\n",
    "foo { print(it) }\n",
    "foo({ print(it) })"
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