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Using an integer as a key in an associative array in JavaScript
...ert the integer to a string. The following outputs 20, not undefined:
var test = {}
test[2300] = 20;
console.log(test["2300"]);
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Are JavaScript strings immutable? Do I need a “string builder” in JavaScript?
... answer (that using Array.join is faster for concatenation) so I wanted to test out the different methods of concatenating strings and abstracting the fastest way into a StringBuilder. I wrote some tests to see if this is true (it isn't!).
This was what I believed would be the fastest way, though I...
Efficiency of Java “Double Brace Initialization”?
...was shelved indefinitely.
Experiment
Here's the simple experiment I've tested -- make 1000 ArrayLists with the elements "Hello" and "World!" added to them via the add method, using the two methods:
Method 1: Double Brace Initialization
List<String> l = new ArrayList<String>() {{
...
How to Test a Concern in Rails
...y Rails 4 application which has a full_name method, how would I go about testing this using RSpec?
3 Answers
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How do I test an AngularJS service with Jasmine?
(There is a related question here: Jasmine test does not see AngularJS module )
4 Answers
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How to add test coverage to a private constructor?
...e placing too high a value on a simple number. Coverage is an indicator of testing. Don't be a slave to a tool. The point of coverage is to give you a level of confidence, and to suggest areas for extra testing. Artificially calling an otherwise unused constructor doesn't help with either of those p...
Why isn't my JavaScript working in JSFiddle?
...jsfiddle.net/pUeue/
$('input[type=button]').click( function() {
alert("test");
});
Note applying the handler this way, instead of inline, keeps your HTML clean. I'm using jQuery, but you could do it with or without a framework or using a different framework, if you like.
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What order are the Junit @Before/@After called?
I have an Integration Test Suite. I have a IntegrationTestBase class for all my tests to extend. This base class has a @Before ( public void setUp() ) and @After ( public void tearDown() ) method to establish API and DB connections. What I've been doing is just overriding those two methods in ...
Java: Subpackage visibility?
I have two packages in my project: odp.proj and odp.proj.test . There are certain methods that I want to be visible only to the classes in these two packages. How can I do this?
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How do I find the duplicates in a list and create another list with them?
... [1, 2, 5]
Just in case speed matters, here are some timings:
# file: test.py
import collections
def thg435(l):
return [x for x, y in collections.Counter(l).items() if y > 1]
def moooeeeep(l):
seen = set()
seen_add = seen.add
# adds all elements it doesn't know yet to seen ...