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how to create a file name with the current date & time in python?
... human readable.
from datetime import datetime
datetime.now().strftime("%Y_%m_%d-%I_%M_%S_%p")
'2020_08_12-03_29_22_AM'
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How to turn on/off ReactJS 'development mode'?
...tely the magic comes down to React embedding references to process.env.NODE_ENV throughout the codebase; these act like a feature toggle.
if (process.env.NODE_ENV !== "production")
// do propType checks
The above is the most common pattern, and other libraries follow it as well. So to "disable" t...
How to output only captured groups with sed?
... groups and their back references. The back references are numbered in the order the groups appear, but they can be used in any order and can be repeated:
echo "foobarbaz" | sed -r 's/^foo(.*)b(.)z$/\2 \1 \2/'
outputs "a bar a".
If you have GNU grep (it may also work in BSD, including OS X):
ec...
What is PAGEIOLATCH_SH wait type in SQL Server?
... like this:
Select * from <table> where <col1> = <value> order by <PrimaryKey>
, check that you have a composite index on (col1, col_primary_key).
If you don't have one, then you'll need either a full INDEX SCAN if the PRIMARY KEY is chosen, or a SORT if an index on col1 is ...
RSS Feeds in ASP.NET MVC
...stem.Web;
using System.Web.Mvc;
using System.Xml;
namespace MVC3JavaScript_3_2012.Rss
{
public class RssFeed : FileResult
{
private Uri _currentUrl;
private readonly string _title;
private readonly string _description;
private readonly List<SyndicationItem...
Difference between Role and GrantedAuthority in Spring Security
...hat says that a role is a GrantedAuthority that starts with the prefix ROLE_. There's nothing more. A role is just a GrantedAuthority - a "permission" - a "right". You see a lot of places in spring security where the role with its ROLE_ prefix is handled specially as e.g. in the RoleVoter, where the...
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
...
In Java 8 we can solve it as:
String str = "xyz";
str.chars().forEachOrdered(i -> System.out.print((char)i));
str.codePoints().forEachOrdered(i -> System.out.print((char)i));
The method chars() returns an IntStream as mentioned in doc:
Returns a stream of int zero-extending the cha...
Force TextBlock to wrap in WPF ListBox
...in the size of the listbox, you should set the width of it explicitly.
In order to change it dynamically, it means not a fix value, but you need to bind it to its proper parent element in the visual tree. You can have something like this:
<ListBox ItemsSource="{Binding MyItems}" Name="MyListBox...
How to modify the keyboard shortcuts in Eclipse IDE?
... less says it all. Specifically, I've become increasingly annoyed that in order to run an ant script I have to use Alt + Shift + x , q . But I think If I had this power I would many things I would change the shortcuts for/add shortcuts for things that don't currently have them.
...
Java Swing revalidate() vs repaint()
...ent to repaint itself. It is often the case that you need to call this in order to cleanup conditions such as yours.
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