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Regular Expression to get a string between parentheses in Javascript
...ening parentheses
( : begin capturing group
[^)]+: match one or more non ) characters
) : end capturing group
\) : match closing parentheses
Here is a visual explanation on RegExplained
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im...
Code Golf: Lasers
The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input .
...
Serializing object that contains cyclic object value
...
if (stack.includes(obj))
return null;
let s = stack.concat([obj]);
return Array.isArray(obj)
? obj.map(x => decycle(x, s))
: Object.fromEntries(
Object.entries(obj)
.map(([k, v]) => [k, decycle(v, s)]));
}
//
...
Why can I add named properties to an array as if it were an object?
...cts, just slightly modified (with a few more functions).
Functions like:
concat
every
filer
forEach
join
indexOf
lastIndexOf
map
pop
push
reverse
shift
slice
some
sort
splice
toSource
toString
unshift
valueOf
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...
How to make a flat list out of list of lists?
...ssentially a wrapper around timeit), and found
functools.reduce(operator.iconcat, a, [])
to be the fastest solution, both when many small lists and few long lists are concatenated. (operator.iadd is equally fast.)
Code to reproduce the plot:
import functools
import itertools
import numpy
...
Listen for key press in .NET console app
...tic void ProcessFiles()
{
var files = Enumerable.Range(1, 100).Select(n => "File" + n + ".txt");
var taskBusy = new Task(BusyIndicator);
taskBusy.Start();
foreach (var file in files)
{
Thread.Sleep(1000);
Console.WriteLine("Pro...
How do I create a unique ID in Java? [duplicate]
...ignificantBits());
}
private static String toIDString(long i) {
char[] buf = new char[32];
int z = 64; // 1 << 6;
int cp = 32;
long b = z - 1;
do {
buf[--cp] = DIGITS66[(int)(i & b)];
i >>>= 6;
} while (i != 0);
re...
Java multiline string
...
Furthermore, the first version will be automatically concatenated by the compiler, since all the strings are known at compile time. Even if the strings are not known at compile time, it's no slower than StringBuilder or String.format(). The only reason to avoid concatenation wi...
Extract digits from a string in Java
...t probably faster:
public static String stripNonDigits(
final CharSequence input /* inspired by seh's comment */){
final StringBuilder sb = new StringBuilder(
input.length() /* also inspired by seh's comment */);
for(int i = 0; i < input.length(); i++){
fi...
What is a reasonable length limit on person “Name” fields?
...put their information, including name. I gave the name field a limit of 50 characters to coincide with my database table where the field is varchar(50), but then I started to wonder.
...