371
Points
Questions
17
Answers
20
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Asked on March 30, 2021 in YouTube.
২০০১ এ যখন সেনা বাহিনী নামানো হয় দেশ জুড়ে, তখন খুব ছোট ছিলাম!
সেনাদের যেতে দেখলেই বলতাম, ছিনা টাইট, বডি টাইট, রেপ রাইট রেপ রাইট!কথাটা বললাম এই কারণে যে, আগে ভিডিওর কোয়ালিটি ঠিক রাখতে হবে তারপর মারকেটিং এ নামতে হবে।
ভিউয়ারকে ধরে রাখার জন্য জত ধরনের ট্যাক্টিস আছে, সেটা প্রয়োগ করুন। সেটা হতে পারে পাঞ্চ লাইন হতে পারে জোক্স ,হতে পারে গ্রাফিক্স এড করার মাধ্যমে, হতে পারে ইনফোগ্রাফিক্স এর মাধ্যমে, সাউন্ড এফেক্স এর মাধ্যমে ইত্যাদি।
ভিডিওর ওয়াচ টাইম জত বেশি থাকবে ভিডিও তত দ্রুত ভাইরাল হবে। এটা ইউটিউবের একটা এলগোরিদম।
সাবজেক্ট রিলেটেড গ্রুপে ভিডিও পোস্ট করতে পারেন। জাস্ট পরিচিতি লাভ করার জন্য, সাথে ইউটিউব চ্যানেলের লিঙ্কটা দিয়ে দিবেন।
আশে পাশের ইউটিউবারদের সাথে কলাব করতে পারেন, কিংবা পরিচিত কোন ইউটিউবারকে রিকোয়েস্ট করতে পারেন আপনার চ্যানেলের একটু প্রমোশন করে দিতে।
ইউটিউব স্টোরিতে ভিডিও লিঙ্ক দেয়ার মাধ্যমে, কিংবা ফেসবুক এর বড় বড় পেইজে এডমিন দারা শেয়ার দিয়ে।
বুস্ট করে।
প্লে স্টোরে অনেক অ্যাপ আছে জেগুলো দিয়ে আপনি ভিউয়ের বদলে ভিউ নিতে পারবেন। তবে সেই ক্ষেত্রে যদি আপনি ৫মিনিটের ভিডিওতে ৫ মিনিট দেখা বাধ্যতামুলক করে দেয়ার অপ্সহন থাকে এবং সে অনুযায়ী ভিউ করাতে পারেন, তবে লাভ আছে নইলে উল্টো ক্ষতি!
খতির কারন হচ্ছে, ৫ মিনিটের ভিডিও যদি ১০০ জন ১ মিনিট করে দেখে তবে আপনার এভারেজ ভিউ রেটিং কমে যাবে। এবং রাঙ্কিং এর তলানিতে গিয়ে ঠেকবে। এবং যে কারণে ইউটিউব নিজ থেকে যে সাজেশন লিস্টে আপনার ভিডিওটা রাখতো সেটা কমিয়ে দিবে, ফ্লপ ভিডিও ভেবে। যে কারণে বলবো এটা না করাই উত্তম।- 860 views
- 1 answers
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Asked on January 6, 2021 in Science.
খুব সুন্দর প্রশ্ন।
মহাশূন্যে কোনো চাপ নেই!
তাহলে মহাকাশচারীদের কেন পোশাক পরতে হয়!
আসলে মহাকাশ এ চাপ না থাকলেও মানুষের শরীরে রক্তের একটা চাপ আছে এর মান 1.5× 10^5 pa । এ চাপ কিন্তু আমরা পৃথিবীতে থাকতে অনুভব করি না কারণ বায়ুমন্ডলীয় চাপ এই চাপ হতে কিছুটা বেশি। কিন্তু মহাশূন্যে তো চাপকে প্রতিঘাত করার মতো কোনো চাপ নেই তাই উল্টো আমরা আমাদের চাপ ই অনুভব করি।
আর এই চাপ এত মারাত্মক যে আমরা কিছুক্ষনের মধ্যে রক্তক্ষরণে মারা যেতে থাকবো
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Asked on August 17, 2020 in Solution.
To check if your website is blocked by Facebook, you can use the Facebook Sharing Debugger tool.
All you need to do is enter your site’s URL and click the Debug button. If your website is blocked by Facebook, you should see the following message (or something similar):
We can’t review this website because the content doesn’t meet our Community Standards. If you think this is a mistake, please let us know.
How to fix a website blocked by Facebook
If your website is indeed blocked by Facebook, here’s how to fix the problem so that you and others can share your content again.
1. Make sure you’re not violating any Community Standards
Before doing anything else, you need to make sure that your website doesn’t violate Facebook’s Community Standards.
If your website is legitimately violating any standards, you’re not going to be able to unblock it.
Read through the Facebook Community Standards in detail and think about how/if any of them could apply to your site.
2. Submit your website to Facebook for reconsideration
Once you’re 100% sure that your website doesn’t violate Facebook’s Community Standards, you can submit it for reconsideration.
To do this, go back to the Facebook Sharing Debugger tool and enter your website again. You should see the same message telling you that your website is blocked.
To submit your website for reconsideration, click the let us know link:
This will take you to a form where you can submit a short message explaining why your site should be unblocked:
- If your site never violated the Community Standards, you can explain that here.
- If your site did violate the Community Standards but you’ve since removed the offending content, you can also let them know about that.
Facebook doesn’t offer a specific timeline for when they’ll respond. However, you should expect it to take anywhere from a few weeks to a month (and you might not get a response at all – you can try resubmitting again if that’s the case).
- 394 views
- 1 answers
- 0 votes
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Asked on August 17, 2020 in Education.
That’s great! Since you’re looking for something that can help you develop an Android app with drag and drop facility, I think I have the solution you’re looking for. That’s right! I think It’ll be great if you try OnGoBuyo. It’s a great Android app maker. Just drag and drop and you can build an app for not only Android but for iOS platform also.
It offers some really exciting features. For example:
- Custom color selection
- Supports multiple languages and currencies
- Right-to-left language
- Homepage layout customization
- Maintenance and live mode
- Push notifications for orders
- Real-time cart management
It actually offers many more features than I have mentioned here. I think, maybe you should try OnGoBuyo and see how it works for you. I/m sure you will be able to get your app developed with it with great ease.
- 326 views
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Asked on August 17, 2020 in Education.
ব্লু লাইট ফিল্টার করে এইরকম চশমা ব্যবহার করতে পারেন। আমি যেটা ব্যবহার করি সেটা এই লিঙ্কে দেখতে পারেন।
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Asked on August 16, 2020 in Travel.
Born and raised in Dhaka, the capital of Bangladesh. I can recall how wonderful it was during the 90′s. It was filled with wide open spaces for me to play football, cricket, etc. Now, you literally have to mark the spaces that are empty so you can visit them to spend some quality time.
- Check out the food, we love to eat spicy. And yes, sometimes it’s a bit too spicy.
- Visit Ahsan Manzil, Dhakeswari Temple, Lagbagh Fort, National Parliament (Jatiyo Sangsod Bhaban), National Martyr’s Memorial (Smriti Shoudho)
- Visit the university area, the Doyel Chottor, Shapla Chottor in Motijheel Industrial and Commercial Area. This is the heart of Dhaka City. Go around Curzon Hall, Ramna Park, Teachers-Students Center known as TSC (one of the few places I know has the WiFi service), Shaheed Minar (right in front of Annex Building)
- Be sure to go around Gulistan, visit places in Old Dhaka, and New Dhaka to compare and contrast. As always, you may have already understood that to stay at an apartment in New Dhaka may suck out all the meager salary off of your pocket. If financial difficulties isn’t one of your concerns, you can consider moving to Uttara, Banani, Gulshan, etc. Otherwise, Bakshi Bazaar, Laxmi Bazaar, Bangla Bazaar, Shathari Bazaar or any other kind of Bazaars maybe your initial residence 🙂
- Carry a mask, to save yourself from the air pollution. This is exactly why I mentioned that sometimes you may want to visit Curzon Hall to have some fresh air. Try to avoid going near Buri Ganga, a couple of masks coupled with a few air freshener cylinders won’t still be enough to keep the “good smell” burning away the hair inside your nose 🙂
- If you are a university student and are planning to move to a dorm, make sure you don’t leave your lungi out of your room, in order to dry it 🙂
- Whoever you are, if you are living in certain places of Old Town, consider not coming out of the house after 8–9 pm. Its not safe. Same goes for New Town.
- Wherever you go, careful about your pockets. Watch out for pickpocketers. Gulistan, Motijheel, and numerous other places. Careful if you are carrying digital gadgets on the streets. Laptops, cellphones, iPads or whatever it is.
- Be sure you understand the difference between contaminated food and fresh food. Numerous groceries, fish and meat are contaminated with Formaldehyde. Careful what you buy when you shop.
- Dhaka is a very accident prone city, you may experience bumps here and there, even if you have a car. We don’t maintain the 3 second rule here. I’ve seen numerous accidents and death (sometimes) everyday. Avoid the public bus completely if possible.
- If you want to reach somewhere in time, plan ahead. The traffic in Dhaka City is unbearable even after all these years of plannings, and the construction of flyover exits, and other street infrastructure.
- Don’t get near political rallies, or any rallies if at all possible. I’ve seen a few fireworks go off in front of my very eyes. You should know what I mean (Ka-Boom!). Watch your step, fights can break out anywhere. Just stay out of radius and you should be fine. Yes, it takes a bit of luck though. You may get caught up inside the radius.
- We usually have political strikes (no vehicles on streets) a few times a month. Try not to go out of home in those days if possible. Don’t know the current situation though.
- Its not a country where we practice freedom of speech, so don’t become a soothsayer or a sage and start shouting in God’s name or whatever the hell it is that you want to get off your chest. We’ll put you in your place 🙂
- If you are a lady, dress appropriately, unless you want to get in trouble from bad guys. Actually it may come from any guy since the culture is a bit too restricted and conservative in there, to say the least.
- You may end up learning Bang-lish (instead of the official Bengali) and/or pick up some other very strange dialects, depending on where you end up staying in Dhaka. Every part of Dhaka has a different style. We just don’t see it, if we don’t live in all of them for a part of our lives.
- Being among the top ranks in some the most densest cities in the world, and with numerous problems that are usually associated with a developing nation, try and embrace the city as your own in the best way possible. Because the people will soon make you as one of their own. Such is our hospitable nature.
So, welcome to Dhaka, the capital of “Beautiful Bangladesh”
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Asked on March 28, 2020 in Programming.
When you declare a reference variable (i.e. an object) you are really creating a pointer to an object. Consider the following code where you declare a variable of primitive type
int
:int x; x = 10;
In this example, the variable
x
is anint
and Java will initialize it to0
for you. When you assign it the value of10
on the second line, your value of10
is written into the memory location referred to byx
.But, when you try to declare a reference type, something different happens. Take the following code:
Integer num; num = new Integer(10);
The first line declares a variable named
num
, but it does not actually contain a primitive value yet. Instead, it contains a pointer (because the type isInteger
which is a reference type). Since you have not yet said what to point to, Java sets it tonull
, which means “I am pointing to nothing“.In the second line, the
new
keyword is used to instantiate (or create) an object of typeInteger
and the pointer variablenum
is assigned to thatInteger
object.The
NullPointerException
occurs when you declare a variable but did not create an object and assign to the variable before trying to use the contents of the variable (called dereferencing). So you are pointing to something that does not actually exist.Dereferencing usually happens when using
.
to access a method or field, or using[
to index an array.If you attempt to dereference
num
BEFORE creating the object you get aNullPointerException
. In the most trivial cases, the compiler will catch the problem and let you know that “num may not have been initialized
,” but sometimes you may write code that does not directly create the object.For instance, you may have a method as follows:
public void doSomething(SomeObject obj) { //do something to obj }
In which case, you are not creating the object
obj
, but rather assuming that it was created before thedoSomething()
method was called. Note, it is possible to call the method like this:doSomething(null);
In which case,
obj
isnull
. If the method is intended to do something to the passed-in object, it is appropriate to throw theNullPointerException
because it’s a programmer error and the programmer will need that information for debugging purposes. Please include the name of the object variable in the exception message, likeObjects.requireNonNull(a, "a");
Alternatively, there may be cases where the purpose of the method is not solely to operate on the passed in object, and therefore a null parameter may be acceptable. In this case, you would need to check for a null parameter and behave differently. You should also explain this in the documentation. For example,
doSomething()
could be written as:/** * @param obj An optional foo for ____. May be null, in which case * the result will be ____. */ public void doSomething(SomeObject obj) { if(obj == null) { //do something } else { //do something else } }
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