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Simulator or Emulator? What is the difference?
While I understand what simulation and emulation mean in general, I almost always get confused about them. Assume that I create a piece of software that mimics existing hardware/software, what should I call it? A simulator or an emulator?
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Why is NaN not equal to NaN? [duplicate]
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Well, log(-1) gives NaN, and acos(2) also gives NaN. Does that mean that log(-1) == acos(2)? Clearly not. Hence it makes perfect sense that NaN is not equal to itself.
Revisiting this almost two years later, here's a "NaN-safe" comparison function:
function compare(a,b) {
return a ...
Is there a naming convention for MySQL?
... about how you would cope with a single table foo_bar that has columns foo_id and another_foo_id both of which reference the foo table foo_id column. You might want to consider how to deal with this. This is a bit of a corner case though!
Point 4 - Similar to Point 3. You may want to introduce a nu...
java.lang.NoClassDefFoundError: Could not initialize class XXX
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You are getting a java.lang.NoClassDefFoundError which does NOT mean that your class is missing (in that case you'd get a java.lang.ClassNotFoundException). The ClassLoader ran into an error while reading the class definition when trying to read the class.
Put a try/catch inside your sta...
How to select from subquery using Laravel Query Builder?
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@Kannan nope. it's a candidate for a PR I guess, but in the end that's not very common use case. Probably this is the reason for not having it there up to this day..
– Jarek Tkaczyk
Feb 28 '16 at 12:28
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ExpandableListView - hide indicator for groups with no children
In an ExpandableListView , is there a way to hide the group indicator for groups with no children?
13 Answers
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Wait 5 seconds before executing next line
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If by "testing" you mean unit tests: your test framework should have a way to run async tests. If you mean manual testing: Chrome's Network tab has a Throttling dropdown to simulate slow requests.
– Joseph Silber
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How to use HTML to print header and footer on every printed page of a document?
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This did not work for me, I'm using Chrome 15.0. All it does is print the element where it would be on the screen, e.g. in the middle of the page, if that's where I scrolled to. It certainly doesn't print on every page.
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Difference between “process.stdout.write” and “console.log” in node.js?
...his:
process.stdout.write("Hello World"); //Hello World%
(I think that means something like "the end of the program", so you will see it only if you process.stdout.write was used at the end of your file and you didn't add the break line)
On the other hand, console.log can do more.
You can use...
Detect permission of camera in iOS
I am developing a very simple video app. I use the official control: UIImagePickerController.
6 Answers
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