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What's the difference between [ and [[ in Bash? [duplicate]
...ked at Conditional Expressions section and it lists the same operators as test (and [ ).
4 Answers
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How to delete/create databases in Neo4j?
... all nodes and relationships of an existing graph to get a clean setup for tests, e.g., using shell commands similar to rmrel or rm ?
...
What is the difference between “def” and “val” to define a function
...n
//Boolean = true
With def you can get new function on every call:
val test: () => Int = {
val r = util.Random.nextInt
() => r
}
test()
// Int = -1049057402
test()
// Int = -1049057402 - same result
def test: () => Int = {
val r = util.Random.nextInt
() => r
}
test()
// In...
MySQL vs MongoDB 1000 reads
I have been very excited about MongoDb and have been testing it lately. I had a table called posts in MySQL with about 20 million records indexed only on a field called 'id'.
...
Accept function as parameter in PHP
...
PHP VERSION >= 5.3.0
Example 1: basic
function test($test_param, $my_function) {
return $my_function($test_param);
}
test("param", function($param) {
echo $param;
}); //will echo "param"
Example 2: std object
$obj = new stdClass();
$obj->test = function ($t...
How to synchronize a static variable among threads running different instances of a class in Java?
...nized static method. This synchronizes on the class object.
public class Test {
private static int count = 0;
public static synchronized void incrementCount() {
count++;
}
}
Explicitly synchronize on the class object.
public class Test {
private static int count = 0;
...
Maven - How to compile tests without running them ?
Is there a way in Maven to compile the tests without running them ? I want to use the IDE to run specific tests and not all of them.
...
How to profile a bash shell script slow startup?
...d
Reading this and because profiling is an important step, I've done some test and research about this whole SO question and already posted answers.
There is 4+ answer:
The first is based on @DennisWilliamson's idea but with a lot less of resource consumption
The second was my own (before this;)...
Java String - See if a string contains only numbers and not letters
...ther solutions, because at least require exception handling.
I've run jmh tests and have found that iterating over String using charAt and comparing chars with boundary chars is the fastest way to test if string contains only digits.
JMH testing
Tests compare performance of Character.isDigit vs P...
When should I mock?
...
A unit test should test a single codepath through a single method. When the execution of a method passes outside of that method, into another object, and back again, you have a dependency.
When you test that code path with the a...