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Python, creating objects
...
Our teacher gave us a test.py program that tests if we did the problems correctly. The question wants me to specifically to use the make_student function. The end goal is to: s1 = make_student(name, age, major) and now I have everything assig...
How to disable HTML button using JavaScript?
...emonstrates how shadowing works:
var input = document.querySelector('#test');
// the attribute works as expected
console.log('old attribute:', input.getAttribute('value'));
// the property is equal to the attribute when the property is not explicitly set
console.log('old property:', input...
Swift - encode URL
...
Swift 3
In Swift 3 there is addingPercentEncoding
let originalString = "test/test"
let escapedString = originalString.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)
print(escapedString!)
Output:
test%2Ftest
Swift 1
In iOS 7 and above there is stringByAddingPercentEncodingW...
What are conventions for filenames in Go?
...at begin with "." or "_" are ignored by the go tool
Files with the suffix _test.go are only compiled and run by the go test tool.
Files with os and architecture specific suffixes automatically follow those same constraints, e.g. name_linux.go will only build on linux, name_amd64.go will only build o...
Mocking python function based on input arguments
...dule my_module.py uses pandas to read from a database and we would like to test this module by mocking pd.read_sql_table method (which takes table_name as argument).
What you can do is to create (inside your test) a db_mock method that returns different objects depending on the argument provided:
...
Super-simple example of C# observer/observable with delegates
... Console.WriteLine("Something happened to " + sender);
}
}
class Test
{
static void Main()
{
Observable observable = new Observable();
Observer observer = new Observer();
observable.SomethingHappened += observer.HandleEvent;
observable.DoSomething()...
What is the use of “assert” in Python?
...ion.
When you do...
assert condition
... you're telling the program to test that condition, and immediately trigger an error if the condition is false.
In Python, it's roughly equivalent to this:
if not condition:
raise AssertionError()
Try it in the Python shell:
>>> assert Tr...
What happens when there's insufficient memory to throw an OutOfMemoryError?
...ems to be right: at least my JVM apparently re-uses OutOfMemoryErrors. To test this, I wrote a simple test program:
class OOMTest {
private static void test (OutOfMemoryError o) {
try {
for (int n = 1; true; n += n) {
int[] foo = new int[n];
}
...
Is it possible to declare a variable in Gradle usable in Java?
...this variable can be passed on runtime as well. Mostly useful when running tests with different configuration. Use ./gradlew -PAppKey="1234" testdebug
– Jaswanth Manigundan
May 4 '17 at 23:30
...
How to extract the n-th elements from a list of tuples?
...s. The returned list is truncated
in length to the length of the shortest argument sequence.
>>> elements = [(1,1,1),(2,3,7),(3,5,10)]
>>> zip(*elements)
[(1, 2, 3), (1, 3, 5), (1, 7, 10)]
>>> zip(*elements)[1]
(1, 3, 5)
>>>
Neat thing I learned today: U...