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Using bitwise OR 0 to floor a number
...loops on chrome due to loop invariant code motion. A slightly better perf test would be: jsperf.com/floor-performance/2
– Sam Giles
May 8 '13 at 12:04
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Create list of single item repeated N times
... references to the same list, not n independent empty lists.
Performance testing
At first glance it seems that repeat is the fastest way to create a list with n identical elements:
>>> timeit.timeit('itertools.repeat(0, 10)', 'import itertools', number = 1000000)
0.37095273281943264
>...
Private properties in JavaScript ES6 classes
...t.
class Something {
#property;
constructor(){
this.#property = "test";
}
#privateMethod() {
return 'hello world';
}
getPrivateMessage() {
return this.#privateMethod();
}
}
const instance = new Something();
console.log(instance.property); //=> undefined
console.lo...
How to make Java honor the DNS Caching Timeout?
...tStream;
import java.net.URL;
import java.net.URLConnection;
public class Test {
final static String hostname = "www.google.com";
public static void main(String[] args) {
// only required for Java SE 5 and lower:
//Security.setProperty("networkaddress.cache.ttl", "30");
...
What is the Scala annotation to ensure a tail recursive function is optimized?
...the compiler.
In Scala 2.7 or earlier, you will need to rely on manual testing, or inspection of the bytecode, to work out whether a method has been optimised.
Example:
you could add a @tailrec annotation so that you can be sure that your changes have worked.
import scala.annotation.t...
How can I get all constants of a type by reflection?
...not sure about the assertions with regards to IsLiteral and IsInitOnly. On testing it would seem that for static readonly properties IsLiteral is always false - so IsLiteral is the only flag you need to check to find constants and you can ignore IsInitOnly. I tried with different field types (e.g. S...
Finding the number of days between two dates
...
This function failed 0 of 14603 tests between 1980 and 2020.
– LSerni
Nov 9 '17 at 21:38
...
“x not in y” or “not x in y”
When testing for membership, we can use:
6 Answers
6
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Form inline inside a form horizontal in twitter bootstrap?
...gt;
You can achieve that behaviour in many ways, that's just an example. Test it on this bootply
Bootstrap 2
<form class="form-horizontal">
<div class="control-group">
<label class="control-label" for="inputType">Type</label>
<div class="controls"&g...
Comparing date part only without comparing time in JavaScript
...
Please be aware that testing by date1 === date2 does not seem to provide consistent behaviour; it's better to do date1.valueOf() === b.valueOf() or even date1.getTime() === date2.getTime(). Strangeness.
– Erwin Wessels
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