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"definition": "লেট স্কোপ ফাংশন ,নাল চেক করার জন্য ",
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"code": " mediaString?.let { media ->\n\t//do your opeartion you want to do on mediaString object.But use \"media\" in stead of mediaString. It is an alternative of \"if(mediaString != null){}\" in java\n}"
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}]
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},
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{
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"title": "টারনারি অপারেশনস",
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"items": [ {
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"definition": "টারনারি অপারেশন ",
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"code": "val numOfTypes = if (x > 5) x > 5 else x <= 5"
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}]
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},
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{
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"title": "বিটওয়াইজ অপারেশনস",
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"items": [
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{
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"definition": "এন্ড অপারেশন ",
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"code": "val andResult = a and b"
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},
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{
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"definition": "অর অপারেশন ",
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"code": "val orResult = a or b"
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},
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{
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"definition": "এক্স অর অপারেশন ",
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"code": "val orResult = a xor b"
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},
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{
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"definition": "রাইট শিফট ",
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"code": "a shr 2"
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},
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{
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"definition": "লেফট শিফট ",
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"code": "a shl 2"
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},
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{
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"definition": "আনসাইনড রাইট শিফট ",
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"code": "a ushr 2"
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}
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]
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},
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{
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"title": "টাইপ চেক এবং কাস্টিং",
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"items": [
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{
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"definition": "টাইপ চেক ",
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"code": "var age = object as? AgeData // var age = object as AgeData?"
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},
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{
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"definition": "টাইপ চেক ( implicit ) ",
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"code": "if ( object is age ) { var age = object } // smart casting"
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}
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]
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},
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{
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"title": "আর্গুমেন্ট পাস ও মেথড ডাটা রিটার্ন ",
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"items": [
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{
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"definition": "ভ্যারয়েবল নাম্বার অফ আর্গুমেন্টস ",
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