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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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H2 in-memory database. Table not found
I've got a H2 database with URL "jdbc:h2:test" . I create a table using CREATE TABLE PERSON (ID INT PRIMARY KEY, FIRSTNAME VARCHAR(64), LASTNAME VARCHAR(64)); . I then select everything from this (empty) table using SELECT * FROM PERSON . So far, so good.
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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 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...
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 to print instances of a class using print()?
...
>>> class Test:
... def __repr__(self):
... return "Test()"
... def __str__(self):
... return "member of Test"
...
>>> t = Test()
>>> t
Test()
>>> print(t)
member of Test
The __str_...
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 ...
Get file name from URI string in C#
...
Also beware of a querystring. http://www.test.com/file1.txt?a=b will result in file1.txt?a=b
– Julian
Mar 10 '15 at 12:44
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