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C++ 2022-02-02 17:45:33
array declaration c++
#include <iostream> using std::cout; int a[] = { 1, 2, 3, 4, 5 }; int counta() { return sizeof( a ) / sizeof( a[ 0 ] ); // works, since a[] is an array } int countb( int b[] ) { return sizeof( b ) / sizeof( b[ 0 ] ); // fails, since b[... Add solution -
Python 2022-02-02 02:45:51
record audio with processing python
from sys import byteorder from array import array from struct import pack import pyaudio import wave THRESHOLD = 500 CHUNK_SIZE = 1024 FORMAT = pyaudio.paInt16 RATE = 44100 def is_silent(snd_data): "Returns 'True' if below the 'silent' thresho... Add solution -
Javascript 2022-02-01 20:57:09
check if array in conditional chaining javascript
const x = thisIsPossiblyAnArray?.[0]; if (x) { console.log("the value of index 0 is", x); } else { console.log("x is undefined as thisIsPossiblyAnArray is either not an Array or is an Array with no item at index 0") } Add solution -
Javascript 2022-02-01 17:12:09
browse file get full path javascript
const onChange = (event) => { const value = event.target.value; // this will return C:\fakepath\somefile.ext console.log(value); const files = event.target.files; //this will return an ARRAY of File object console.log(files); } return (... Add solution -
Javascript 2022-02-01 12:06:57
8.3.1. Common Array Methods // sort Examples (.sort)
//The general syntax for this method is: arrayName.sort() /*This method arranges the elements of an array into increasing order. For strings, this means alphabetical order. HOWEVER, the results are not always what we expect.*/ let letters = ['f', 'c',... Add solution -
Java 2022-01-31 22:51:40
how to initalize the array as to false
import java.util.Arrays; public class BooleanArrayTest { public static void main(String[] args) { Boolean[] boolArray = new Boolean[5]; // initialize a boolean array for(int i = 0; i < boolArray.le... Add solution -
Javascript 2022-01-31 02:42:27
RangeError
//Occurs when passing an invalid value to a function. let nums = Array(-1); /*The constructor function Array(n) creates an empty array of length n. It is not possible to create an array with negative length, so the code results in RangeError: Invalid ... Add solution -
Javascript 2022-01-30 21:31:17
how to make a string in javascript
var abc = "abcdefghijklmnopqrstuvwxyz"; var esc = 'I don\'t \n know'; // \n new line var len = abc.length; // string length abc.indexOf("lmno"); // find substring, -1 if doesn't contain abc.lastIndexOf("lmn... Add solution
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