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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
>...
Good ways to manage a changelog using git?
...ect (for example: doc, packaging, code ...)
by audience (for example: dev, tester, users ...)
Additionally, you could want to tag some commits:
as "minor" commits that shouldn't get outputed to your changelog (cosmetic changes, small typo in comments...)
as "refactor" if you don't really have a...
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
...
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
...