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Arguments or parameters? [duplicate]
...gle(foo, bar);
foo and bar are arguments.
public static void main(final String[] args) {
args.length;
}
args is a parameter.
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Conditionally ignoring tests in JUnit 4
...nit way is to do this at run-time is org.junit.Assume.
@Before
public void beforeMethod() {
org.junit.Assume.assumeTrue(someCondition());
// rest of setup.
}
You can do it in a @Before method or in the test itself, but not in an @After method. If you do it in the test itself, your @B...
Best practice to validate null and empty collection in Java
...return ((Map) obj).isEmpty();
}
// else
return false;
}
for String best is:
boolean isNullOrEmpty = (str==null || str.trim().isEmpty());
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What does JVM flag CMSClassUnloadingEnabled actually do?
...lly does, other than some very fuzzy high-level definitions such as "gets rid of your PermGen problems" ( which it doesn't , btw).
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Is there a shortcut on Android Studio to convert a text to uppercase?
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Sometimes some weird things happening. I am using Ubuntu 18.10.
My string is like :
Now when I press CTRL+SHIFT+U then I am getting output like:
So I tried with CTRL+SHIFT+WINDOWS+U and its worked perfectly.
Note : I have kept CAPS LOCK ON.
Thank you.
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Difference between java.util.Random and java.security.SecureRandom
My team got handed over some server side code (in Java) that generates random tokens and I have a question regarding the same -
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How do I undo the most recent local commits in Git?
I accidentally committed the wrong files to Git , but I haven't pushed the commit to the server yet.
86 Answers
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In C#, What is a monad?
... static Nullable<int> h(){ return 9; }
static void Main(string[] args)
{
Nullable<int> z =
f().Bind( fval =>
g().Bind( gval =>
h().Bind( hval =>
...
Verifying signed git commits?
With newer versions of git it's possible to sign individual commits (in addition to tags) with a PGP key:
3 Answers
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How to find if directory exists in Python
...[3]: p.exists()
Out[3]: True
In [4]: p.is_dir()
Out[4]: True
Paths (and strings) can be joined together with the / operator:
In [5]: q = p / 'bin' / 'vim'
In [6]: q
Out[6]: PosixPath('/usr/bin/vim')
In [7]: q.exists()
Out[7]: True
In [8]: q.is_dir()
Out[8]: False
Pathlib is also available ...