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Which timestamp type should I choose in a PostgreSQL database?
...ute a bit more.
Absolute time is used to record an event. Examples: "User 123 logged in" or "a graduation ceremonies start at 2011-05-28 2pm PST." Regardless of your local time zone, if you could teleport to where the event occurred, you could witness the event happening. Most time data in a databa...
How to make good reproducible pandas examples
... data and results.
import numpy as np
import pandas as pd
np.random.seed(123)
A kitchen sink example
Here's an example showing a variety of things you can do. All kinds of useful sample dataframes could be created from a subset of this:
df = pd.DataFrame({
# some ways to create random d...
What are the differences between Generics in C# and Java… and Templates in C++? [closed]
...e from this situation, consider the following code:
Y<int>::my_type(123);
This code statement is perfectly valid and tells C++ to execute the function call to Y<int>::my_type. However, if my_type is not a function but rather a type, this statement would still be valid and perform a sp...
Running Bash commands in Python
...r((i=1;i<=$#;i++)); do
# Arrays are Bash-only
array[i]+=123
done''',
shell=True, check=True,
executable='/bin/bash')
A subprocess is separate from its parent, and cannot change it
A somewhat common mistake is doing something like
subprocess.run('foo=bar', shell=Tru...
Pretty-print C++ STL containers
...sert("hello");
j.insert("world");
double k[] = { 1.1, 2.2, M_PI, -1.0/123.0 };
std::cout << i << "\n" << j << "\n" << k << "\n";
}
It currently only works with vector and set, but can be made to work with most containers, just by expanding on the IsConta...
RESTful Authentication
...c.html HTTP/1.1
Host: www.example.org
Cookie: theme=light; sessionToken=abc123
The cookie technique itself is HTTP-linked, so it's not truly RESTful, which should be protocol-independent, IMHO. It is vulnerable to MiM or Replay attacks.
Granted via Token (OAuth2)
An alternative is to put a token...
How to become an OpenCart guru? [closed]
...y of key => value pairs. As an example
$this->data['example_var'] = 123;
Accessing this in a view is a little should be easy to understand if you're familiar with the extract() method which converts each key into a variable. So the example_var key becomes $example_var and can be accessed as...
Repeat String - Javascript
...sive algorithm (also called "divide and conquer") is on a string of length 123,457. On my FreeBSD computer this algorithm, implemented in the stringFill3() function, creates the string in 0.001058 seconds, while the original stringFill1() function creates the string in 0.0808 seconds. The new functi...
For-each over an array in JavaScript
...
123
Loop backwards
I think the reverse for loop deserves a mention here:
for (var i = array.leng...