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Why can I change value of a constant in javascript
...-assignment
...constant cannot be re-declared
When you're adding to an array or object you're not re-assigning or re-declaring the constant, it's already declared and assigned, you're just adding to the "list" that the constant points to.
So this works fine:
const x = {};
x.foo = 'bar';
co...
mongodb/mongoose findMany - find all documents with IDs listed in array
I have an array of _ids and I want to get all docs accordingly, what's the best way to do it ?
5 Answers
...
Javascript Equivalent to PHP Explode()
...e separator
var myarr = mystr.split(":");
//Then read the values from the array where 0 is the first
//Since we skipped the first element in the array, we start at 1
var myvar = myarr[1] + ":" + myarr[2];
// Show the resulting value
console.log(myvar);
// 'TEMP:data'
...
How do I pass an extra parameter to the callback function in Javascript .filter() method?
I want to compare each string in an Array with a given string. My current implementation is:
8 Answers
...
YAML Multi-Line Arrays
...ti-line strings . However, I would like the ability to create a multi-line array (mainly for readibility within config files) using the | character.
...
Generate random password string with requirements in javascript
...mp;& window.crypto.getRandomValues)
{
var result = new Uint8Array(1);
window.crypto.getRandomValues(result);
return result[0];
}
else if(window.msCrypto && window.msCrypto.getRandomValues)
{
var result = new Uint8Array(1);
window.msCrypto.g...
Attempt to set a non-property-list object as an NSUserDefaults
...
The code you posted tries to save an array of custom objects to NSUserDefaults. You can't do that. Implementing the NSCoding methods doesn't help. You can only store things like NSArray, NSDictionary, NSString, NSData, NSNumber, and NSDate in NSUserDefaults.
Yo...
What does DIM stand for in Visual Basic and BASIC?
... BASIC) stood for Dimension, as it was used to define the dimensions of an array.
(The original implementation of BASIC was Dartmouth BASIC, which descended from FORTRAN, where DIMENSION is spelled out.)
Nowadays, Dim is used to define any variable, not just arrays, so its meaning is not intuitive...
How to do associative array/hashing in JavaScript
...
Use JavaScript objects as associative arrays.
Associative Array: In simple words associative arrays use Strings instead of Integer numbers as index.
Create an object with
var dictionary = {};
JavaScript allows you to add properties to objects by using the fol...
PHP Pass by reference in foreach [duplicate]
...
Because on the second loop, $v is still a reference to the last array item, so it's overwritten each time.
You can see it like that:
$a = array ('zero','one','two', 'three');
foreach ($a as &$v) {
}
foreach ($a as $v) {
echo $v.'-'.$a[3].PHP_EOL;
}
As you can see, the last ar...