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How do I know if a generator is empty from the start?
Is there a simple way of testing if the generator has no items, like peek , hasNext , isEmpty , something along those lines?
...
Why is isNaN(null) == false in JS?
...nvert the passed parameter to a number1 (equivalent to Number(x)) and then tests if the value is NaN. If the parameter can't be converted to a number, Number(x) will return NaN2. Therefore, if the conversion of parameter x to a number results in NaN, it returns true; otherwise, it returns false.
S...
How do I assign a port mapping to an existing Docker container?
...rdings, I always follow these steps,
stop running container
docker stop test01
commit the container
docker commit test01 test02
NOTE: The above, test02 is a new image that I'm constructing from the test01 container.
re-run from the commited image
docker run -p 8080:8080 -td test02
Where t...
JUnit 4 compare Sets
...to one another, which invokes the Set equals() method.
public class SimpleTest {
private Set<String> setA;
private Set<String> setB;
@Before
public void setUp() {
setA = new HashSet<String>();
setA.add("Testing...");
setB = new HashSet<...
Can I get “&&” or “-and” to work in PowerShell?
...execute command 2". I have used it for things like:
build && run_tests
In PowerShell, the closest thing you can do is:
(build) -and (run_tests)
It has the same logic, but the output text from the commands is lost. Maybe it is good enough for you, though.
If you're doing this in a sc...
How to check if smtp is working from commandline (Linux) [closed]
...t;sender@mydomain.com>
rcpt to:<to_email@mydomain.com>
data
From: test@mydomain.com
Subject: test mail from command line
this is test number 1
sent from linux box
.
quit
Note : Do not forgot the "." at the end which represents the end of the message.
The "quit" line exits ends the sessio...
How to output something in PowerShell
... outputting something is PowerShell is a thing of beauty - and one its greatest strengths. For example, the common Hello, World! application is reduced to a single line:
"Hello, World!"
It creates a string object, assigns the aforementioned value, and being the last item on the command pipeline i...
Remove the last character in a string in T-SQL?
...
e.g.
DECLARE @String VARCHAR(100)
SET @String = 'TEST STRING'
-- Chop off the end character
SET @String =
CASE @String WHEN null THEN null
ELSE (
CASE LEN(@String) WHEN 0 THEN @String
ELSE LEFT(@String, LEN(@String) - 1)
END
...
How do I use reflection to invoke a private method?
...rivate set; }
void incr(int value) { count += value; }
}
[Test]
public void making_questionable_life_choices()
{
Counter c = new Counter ();
c.call ("incr", 2); // "incr" is private !
c.call ("incr", 3);
Assert.AreEqual (5, c.count...
CSS: bolding some text without changing its container's size
...t-shadow: none!important; }
<li class="shadow0">MmmIii123 This line tests shadow0 (plain)</li>
<li class="shadow2">MmmIii123 This line tests shadow2 (0.02ex)</li>
<li class="shadow4">MmmIii123 This line tests shadow4 (0.04ex)</li>
<li class="shadow6">Mmm...