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Python 2022-03-02 21:10:02
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 -
VBA 2022-03-01 09:15:10
excel vba check for uninitialized or empty array
'In VBA an un-itialized dynamic array will raise a run-time error if 'code attempts to read from... or write to it. 'VBA function to test if an array is ready for access: Function ArrayReady(a) As Boolean On Error Resume Next ArrayReady = Not LB... Add solution -
VBA 2022-02-28 11:20:01
excel vba force array elements to alphanumeric
'VBA function (extremely fast) to force an array column 'to ONLY alpha-numeric characters (with spaces): Function ForceArrayColumnAlphaNumeric(v, Optional col& = 1) Dim i&, j&, p&, max&, t& Dim b() As Byte, res() As Byte,... Add solution -
Javascript 2022-02-22 22:00:14
js unshift vs push
//The unshift() method adds one or more elements to the beginning of an array //and returns the new length of the array. const array1 = [1, 2, 3]; console.log(array1.unshift(4, 5)); // expected output: 5 console.log(array1); // expected output: Array [4... Add solution -
C 2022-02-19 19:55:11
What is Array?
• An array is a container object that holds a fixed number of values of a single type. The length of an array is established when the array is created. After creation, its length is fixed. You have seen an example of arrays already, in the main m... Add solution -
PHP 2022-02-19 08:20:02
jquery get data from php
You can read about ajax in javascript and make an ajax request that gets the json object from PHP then process that in your javascript: Example (with some improvement to your PHP code) PHP $chart6 = $controller->runQuery("SELECT DATE(pay_date... Add solution -
Shell/Bash 2022-02-19 00:30:02
$@ instead of $* in bash functions
#!/bin/bash # $* is a single string whereas $@ is an array. # Using "$*" for a in "$*"; do echo $a; done # Result: # one two three four #------------------------- # Using $* for a in $*; do echo $a; done # Result: # one ... Add solution -
Javascript 2022-02-15 13:25:12
8.3.1. Common Array Methods // splice Examples (.splice)
//The general syntax for this method is: arrayName.splice(index, number of elements to change, item1, item2, ...); //Inside the parentheses (), only the first argument is required. /*The splice method modifies one or more elements anywhere in the array.... Add solution