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What is “loose coupling?” Please provide examples
...tly coupled code relies on a concrete implementation. If I need a list of strings in my code and I declare it like this (in Java)
ArrayList<String> myList = new ArrayList<String>();
then I'm dependent on the ArrayList implementation.
If I want to change that to loosely coupled code,...
Split string using a newline delimiter with Python
I need to delimit the string which has new line in it. How would I achieve it? Please refer below code.
5 Answers
...
Check if character is number?
...arseInt and than check with isNaN
or if you want to work directly on your string you can use regexp like this:
function is_numeric(str){
return /^\d+$/.test(str);
}
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improve this answe...
jQuery - Illegal invocation
...
I think you need to have strings as the data values. It's likely something internally within jQuery that isn't encoding/serializing correctly the To & From Objects.
Try:
var data = {
from : from.val(),
to : to.val(),
speed : speed
}...
How to add elements of a Java8 stream into an existing List
...fail, even in the sequential case.)
Let's take a simple example:
List<String> destList = new ArrayList<>(Arrays.asList("foo"));
List<String> newList = Arrays.asList("0", "1", "2", "3", "4", "5");
newList.parallelStream()
.collect(Collectors.toCollection(() -> destList))...
Python: How to get stdout after running os.system? [duplicate]
...e a way to do this in Jupyter Notebook? Looks like it only return an empty string.
– Louis Yang
Mar 18 at 1:17
@LouisY...
How to check if an int is a null
...o be able to be null, you need to use Integer instead of int.
Integer id;
String name;
public Integer getId() { return id; }
Besides the statement if(person.equals(null)) can't be true, because if person is null, then a NullPointerException will be thrown. So the correct expression is if (person...
How to use a variable for the database name in T-SQL?
...
Put the entire script into a template string, with {SERVERNAME} placeholders. Then edit the string using:
SET @SQL_SCRIPT = REPLACE(@TEMPLATE, '{SERVERNAME}', @DBNAME)
and then run it with
EXECUTE (@SQL_SCRIPT)
It's hard to believe that, in the course of...
How Can I Set the Default Value of a Timestamp Column to the Current Timestamp with Laravel Migratio
... function($table){
$table->increments('id');
$table->string('email', 255);
$table->string('given_name', 100);
$table->string('family_name', 100);
$table->timestamp('joined');
$table->enum('gender', ['male', 'female', 'unisex'])->de...
Regular Expression to reformat a US phone number in Javascript
...u want the format "(123) 456-7890":
function formatPhoneNumber(phoneNumberString) {
var cleaned = ('' + phoneNumberString).replace(/\D/g, '')
var match = cleaned.match(/^(\d{3})(\d{3})(\d{4})$/)
if (match) {
return '(' + match[1] + ') ' + match[2] + '-' + match[3]
}
return null
}
He...