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Assert equals between 2 Lists in Junit
...it's easy to just do this:
@Test
public void test_array_pass()
{
List<String> actual = Arrays.asList("fee", "fi", "foe");
List<String> expected = Arrays.asList("fee", "fi", "foe");
assertThat(actual, is(expected));
assertThat(actual, is(not(expected)));
}
If you have a recent v...
Spring Test & Security: How to mock authentication?
...ller {
@Secured("ROLE_MANAGER")
@GetMapping("/salute")
public String saluteYourManager(@AuthenticationPrincipal User activeUser)
{
return String.format("Hi %s. Foo salutes you!", activeUser.getUsername());
}
}
Here we have a get mapped function to the route /foo/salute ...
How to debug stream().map(…) with lambda expressions?
...
static int timesTwo(int n) {
return n * 2;
}
public static void main(String[] args) {
List<Integer> naturals = Arrays.asList(3247,92837,123);
List<Integer> result =
naturals.stream()
.map(DebugLambda::timesTwo)
.collect(toList());
}
This mi...
How do arrays in C# partially implement IList?
...ot covariant (and can't be safely), array covariance allows this to work:
string[] strings = { "a", "b", "c" };
IList<object> objects = strings;
... which makes it look like typeof(string[]) implements IList<object>, when it doesn't really.
The CLI spec (ECMA-335) partition 1, sectio...
JavaScript - cannot set property of undefined
...p up coders. (True associate arrays aren[t limited by requiring keys to be strings. The presence of inherited predefined properties is another major difference.) On the other hand, Javascript arrays, while objects, act like one expects a numerical array to behave. One is an aspect of functionalit...
How to convert enum value to int?
...ze it fails myEnumValue = MyEnum.valueOf(myInt); the arg has to be of type String - or is there something I am missing?
– likejudo
Sep 10 '14 at 22:58
...
Expanding tuples into arguments
...und that you can do the same with lists, (in fact, any iterable, including strings), not sure how their mutability affects things. That would be interesting to look into.
– wcyn
Nov 26 '17 at 11:47
...
sys.argv[1] meaning in script
...evel.
For every invocation of Python, sys.argv is automatically a list of strings representing the arguments (as separated by spaces) on the command-line. The name comes from the C programming convention in which argv and argc represent the command line arguments.
You'll want to learn more about l...
Why does std::getline() skip input after a formatted extraction?
...am<charT>& input,
std::basic_string<charT>& str )
Another overload of this function takes a delimiter of type charT. A delimiter character is a character that represents the boundary between sequences of input. This particular overload sets t...
How to convert int to QString?
Is there a QString function which takes an int and outputs it as a QString ?
8 Answers
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