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Check if SQL Connection is Open or Closed
... There is one giant caveats with that: 1) with Local Storage now becoming a thing, sooner or later (already?) web apps that use local storage are going to be using a database in that storage. If not now, they will shortly. The other thing here is, my code probably isn't properly genera...
Use email address as primary key?
...an't say that a proposed key is not unique based on hypotheticals without knowing the context. e.g. from the phone company's point of view, a telephone number uniquely identifies a customer, by definition. Yes, you can say, "But what if there are two or three people who might answer when you call th...
Why does Azure deployment take so long?
...redis cache on Azure. My first service on azure - been waiting for 25 mins now and can't believe that this is normal / acceptable.
– Gravy
Jan 22 '18 at 17:09
1
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How can I overwrite a getter method in an ActiveRecord model?
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Well. I just saw the doco. Now if I call name on the model object, which one will be called -name_with_override or name_without_override ?
– Arup Rakshit
May 19 '15 at 9:29
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Converting stream of int's to char's in java
...st notation:
int i = 97; // 97 is 'a' in ASCII
char c = (char) i; // c is now 'a'
If you mean transforming the integer 1 into the character '1', you can do it like this:
if (i >= 0 && i <= 9) {
char c = Character.forDigit(i, 10);
....
}
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How might I convert a double to the nearest integer value?
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@Keith: I don't know but I've always been taught to round x.5 up but I can see reasoning to do it up or down for statistics. Thanks for that. PS It's clear to see I'm not in statistics, finance or accounting where this kind of rounding seems ...
What is the difference between “def” and “val” to define a function
...ng var as I need to change it to 3 later
val sq = x*x // evaluates right now
x = 3 // no effect! sq is already evaluated
println(sq)
Surprisingly, this will print 4 and not 9! val (even var) is evaluated immediately and assigned.
Now change val to def.. it will print 9! Def is a function cal...
UICollectionView spacing margins
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Now overriding the sectionInset method of subclassed UICollectionViewFlowLayout also has no effect. Setting property described below works.
– Dren
Apr 29 '15 at 15:37
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Detect iPad Mini in HTML5
...ertain whether this is because the size of the viewport is really actually now fixed at that value after you rotate the tab, or if it is simply being cached incorrectly somewhere, but if you sit around and play with multiple tabs in various rotation configurations you can see how it correlates. Wher...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
...b/android-4.3_r2/core/java/android/bluetooth/BluetoothDevice.java#L1037).
Now, when I receive that exception, I instantiate a fallback BluetoothSocket, similar to the source code below. As you can see, invoking the hidden method createRfcommSocket via reflections. I have no clue why this method is ...