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What is the difference between loose coupling and tight coupling in the object oriented paradigm?
... output in a CSV file rather than JSON etc., or if you want to switch from MySQL to PostGreSQL you should be able to make those changes extremely easily in your code, without having to rewrite the entire class etc. In other words, you do not want to tightly couple your application with a specific da...
Spring Boot not serving static content
...TA-INF/resources/,
* /resources/, /static/, /public/] plus context:/ (the root of the servlet context).
*/
private String[] staticLocations = RESOURCE_LOCATIONS;
As mentioned before, the request URL will be resolved relative to these locations. Thus src/main/resources/static/index.html will be se...
How to amend several commits in Git to change author
...
To rebase all commits including the root use: git rebase -i --root … instead of passing a SHA.
– gfullam
Apr 15 '19 at 15:14
...
OS X Terminal Colors [closed]
...oloring = \[\e[0m\]
I always add a slightly modified color-scheme in the root's .bash_profile to make the username red, so I always see clearly if I'm logged in as root (handy to avoid mistakes if I have many terminal windows open).
In /root/.bash_profile:
PS1='\[\e[0;31m\]\u\[\e[0m\]@\[\e[0;32m...
Does application.yml support environment variables?
...ing kotlin, you need to put your reference in quotes & escape the $ eg root: "\${LOGGING_LEVEL_ROOT:info}"
– Edward
Feb 11 '19 at 12:57
...
How to serve static files in Flask
...
from flask import Flask, request, send_from_directory
# set the project root directory as the static folder, you can set others.
app = Flask(__name__, static_url_path='')
@app.route('/js/<path:path>')
def send_js(path):
return send_from_directory('js', path)
if __name__ == "__main__":...
What is Virtual DOM?
...des in the Virtual DOM.
ReactElements can be rendered into HTML DOM
var root = React.createElement('div');
ReactDOM.render(root, document.getElementById('example'));
JSX compiles HTML tags into ReactElements
var root = <div/>;
ReactDOM.render(root, document.getElementById('example'));
R...
How can building a heap be O(n) time complexity?
...n. In particular, this implies that the largest item in the heap is at the root. Sifting down and sifting up are essentially the same operation in opposite directions: move an offending node until it satisfies the heap property:
siftDown swaps a node that is too small with its largest child (thereb...
What is the difference between Linq to XML Descendants and Elements
...lt;/foo>
Code:
XDocument doc = XDocument.Load("input.xml");
XElement root = doc.Root;
foreach (XElement e in root.Elements("bar"))
{
Console.WriteLine("Elements : " + e.Value);
}
foreach (XElement e in root.Descendants("bar"))
{
Console.WriteLine("Descendants : " + e.Value);
}
Resu...
Create empty file using python [duplicate]
... file without opening it There is os.mknod("newfile.txt") (but it requires root privileges on OSX). The system call to create a file is actually open() with the O_CREAT flag. So no matter how, you'll always open the file.
So the easiest way to simply create a file without truncating it in case it e...