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What is the difference between a var and val definition in Scala?
...ge the state of that object. At the root of it, however, there was a var.
Now, immutability is a good thing for many reasons. First, if an object doesn't change internal state, you don't have to worry if some other part of your code is changing it. For example:
x = new B(0)
f(x)
if (x.value.value ...
what exactly is device pixel ratio?
this is mentioned every article about mobile web, but nowhere I can found an explanation of what exactly does this attribute measure.
Can anyone please elaborate what does queries like this check?
...
Jenkins Host key verification failed
...(yes/no)?
Type yes and press Enter. The host key for bitbucket.org will now be added to the ~/.ssh/known_hosts file and you won't get this error in Jenkins anymore.
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Why doesn't Java offer operator overloading?
...sult not-equal. In Java, operator= performs reference copy, so a and b are now referring to the same value. As a result, the comparison will produce 'equal', since the object will compare equal to itself.
The difference between copies and references only adds to the confusion of operator overloadin...
How do I create a list of random numbers without duplicates?
...f r not in answer:
answerSize += 1
answer.add(r)
# answer now contains 10 unique, random integers from 0.. 100
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xkcd style graphs in MATLAB
...novice: It'll be my third one. I hope I have it pretty much figured out by now :)
– Jonas
Oct 3 '12 at 16:29
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javac is not recognized as an internal or external command, operable program or batch file [closed]
...jre). Enter the directory.
Then enter the bin directory of that.
You are now in the correct directory. Copy the path. If in File Explorer, click the address bar. If in Command Prompt, copy the prompt.
The resulting Java path should be in the form of (without quotes):
C:\Program Files\Java\jdkxxx...
Do I need all three constructors for an Android custom view?
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How did I never know this?
– Suragch
Nov 4 '17 at 9:17
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Should the hash code of null always be zero, in .NET
...m, either re-implement the hash code to return non-zero, add a default "unknown" enum entry equivalent to null, or simply don't use nullable enums.
Interesting find, by the way.
Another problem I see with this generally is that the hash code cannot represent a 4 byte or larger type that is nullabl...
CSS transition shorthand with multiple properties?
...ay property.
Edit: previously listed here were the compatibilities and known issues regarding transition. Removed for readability.
Bottom-line: just use it. The nature of this property is non-breaking for all applications and compatibility is now well above 94% globally.
If you still want to be...