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Python 2021-09-24 18:46:03
numpy array storing in file by python
# long arrays can be stored in csv files far more efficiently import numpy as np import csv # uploading arrays in a csv file arr1 = [i for i in range(500)] arr2 = [i for i in range(1000)] arr3 = [i for i in range(2000)] # you can write('w') or append('a'... Add solution -
Java 2021-09-24 15:00:04
java enum from int
//If performance is not an issue (code is only called a few times) //The reason this is expensive is that .values() returns an array, //which is a copy of the original because the array might be modified. MyEnum.values()[x] //If performance is an issue (... Add solution -
Javascript 2021-09-24 14:47:02
split array javascript
// Split string into an array of strings const path = "/usr/home/chucknorris" let result = path.split("/") console.log(result) // result // ["", "usr", "home", "chucknorris"] let username = resul... Add solution -
PHP 2021-09-24 09:57:02
php count string in array
<?php $a[0] = 1; $a[1] = 3; $a[2] = 5; var_dump(count($a)); $b[0] = 7; $b[5] = 9; $b[10] = 11; var_dump(count($b)); var_dump(count(null)); var_dump(count(false)); ?> /* result int(3) int(3) Warning: count(): Parameter must be an array... Add solution -
Javascript 2021-09-24 02:26:02
javascript dataurl to blob
function dataURItoBlob(dataURI) { // convert base64 to raw binary data held in a string // doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this var byteString = atob(dataURI.split(',')[1]); // separate out the mime ... Add solution -
PHP 2021-09-23 14:40:02
array_values() in php
PHP array_values() is an inbuilt function that returns all the values of an array and not the keys. The array_values() function returns the array containing all the values of an array. The returned array will have the numeric keys, starting at 0 and incre... Add solution -
Other 2021-09-23 11:55:02
how to send values to a selection sorting function
1 // Fig. 8.15: fig08_15.cpp 2 // This program puts values into an array, sorts the values into 3 // ascending order and prints the resulting array. 4 #include <iostream> 5 using std::cout; 6 using std::endl; 7 8 #include <iomanip&... Add solution -
VBA 2021-09-22 15:37:03
vba static array declaration
'VBA arrays can be fixed-size (static) or resizable (dynamic). 'This is determined when the array is declared: Dim vArrA() 'dynamic: size is determined later. Dim vArrB(1 to 5) 'static: size is determined now and cannot be changed. 'Array size refers ... Add solution
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