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What is the Scala annotation to ensure a tail recursive function is optimized?
...the compiler.
In Scala 2.7 or earlier, you will need to rely on manual testing, or inspection of the bytecode, to work out whether a method has been optimised.
Example:
you could add a @tailrec annotation so that you can be sure that your changes have worked.
import scala.annotation.t...
How can I get all constants of a type by reflection?
...not sure about the assertions with regards to IsLiteral and IsInitOnly. On testing it would seem that for static readonly properties IsLiteral is always false - so IsLiteral is the only flag you need to check to find constants and you can ignore IsInitOnly. I tried with different field types (e.g. S...
Finding the number of days between two dates
...
This function failed 0 of 14603 tests between 1980 and 2020.
– LSerni
Nov 9 '17 at 21:38
...
“x not in y” or “not x in y”
When testing for membership, we can use:
6 Answers
6
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Form inline inside a form horizontal in twitter bootstrap?
...gt;
You can achieve that behaviour in many ways, that's just an example. Test it on this bootply
Bootstrap 2
<form class="form-horizontal">
<div class="control-group">
<label class="control-label" for="inputType">Type</label>
<div class="controls"&g...
Comparing date part only without comparing time in JavaScript
...
Please be aware that testing by date1 === date2 does not seem to provide consistent behaviour; it's better to do date1.valueOf() === b.valueOf() or even date1.getTime() === date2.getTime(). Strangeness.
– Erwin Wessels
...
Should switch statements always contain a default clause?
...y for something so trivial. This is code clutter. Write full coverage unit tests to show your intentions instead. (Just my opinion)
– Robert Noack
Mar 3 '19 at 1:04
...
Behaviour of increment and decrement operators in Python
... change local variable, otherwise it will try to change global.
x = 1
def test():
x = 10
y = PreIncrement('x') #y will be 2, local x will be still 10 and global x will be changed to 2
z = PreIncrement('x', locals()) #z will be 11, local x will be 11 and global x will be unaltered
test()...
Resize image proportionally with MaxHeight and MaxWidth constraints
...
Like this?
public static void Test()
{
using (var image = Image.FromFile(@"c:\logo.png"))
using (var newImage = ScaleImage(image, 300, 400))
{
newImage.Save(@"c:\test.png", ImageFormat.Png);
}
}
public static Image ScaleImage(Imag...
What issues should be considered when overriding equals and hashCode in Java?
...e properties of both objects match their defaults, but I don't see how you test for that.
– supercat
Dec 28 '13 at 19:41
7
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