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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
... get is how multiple clients can simultaneously connect to say port 80. I know each client has a unique (for their machine) port. Does the server reply back from an available port to the client, and simply state the reply came from 80? How does this work?
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Convert ArrayList to String[] array [duplicate]
... To provide an explanation as to what is going on here, the JVM doesn't know how to blindly downcast Object[] (the result of toArray()) to String[]. To let it know what your desired object type is, you can pass a typed array into toArray(). The typed array can be of any size (new String[1] is vali...
What is the purpose of Looper and how to use it?
I am new to Android. I want to know what the Looper class does and also how to use it. I have read the Android Looper class documentation but I am unable to completely understand it.
I have seen it in a lot of places but unable to understand its purpose. Can anyone help me by defining the purpos...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
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I hear Matlab has lazy evaluation now. If not, we do have the technology to implement them.
– Dmitry
Dec 11 '16 at 21:57
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How can I respond to the width of an auto-sized DOM element in React?
...olution is to use a library for this like react-measure.
Update: there is now a custom hook for resize detection (which I have not tried personally): react-resize-aware. Being a custom hook, it looks more convenient to use than react-measure.
import * as React from 'react'
import Measure from 're...
Generate random number between two numbers in JavaScript
...the equation, this is equivalent to
0 <= (X - min) <= (max - min)
Now, lets multiply this with a random number r
which is
0 <= (X - min) * r <= (max - min) * r
Now, lets add back min to the equation
min <= min + (X - min) * r <= min + (max - min) * r
Now, lets chose a funct...
Android emulator-5554 offline
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This helped ind combination with 'Cold Boot now' just below 'Wipe Data'.
– S. Gissel
Apr 24 '19 at 11:00
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Prevent dialog dismissal on screen rotation in Android
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The best way to avoid this problem nowadays is by using a DialogFragment.
Create a new class which extends DialogFragment. Override onCreateDialog and return your old Dialog or an AlertDialog.
Then you can show it with DialogFragment.show(fragmentManager, ta...
Mailto links do nothing in Chrome but work in Firefox?
... I believe the default is to run the mail client on the computer. I know at work, it will run thunderbird; if they have outlook installed it may run outlook, etc. Personally, it did not run gmail by default, I had to set it up that way.
– kennypu
Jul 14 '...
Spring - @Transactional - What happens in background?
I want to know what actually happens when you annotate a method with @Transactional ?
Of course, I know that Spring will wrap that method in a Transaction.
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