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How do I get the number of days between two dates in JavaScript?
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Steps
Set start date
Set end date
Calculate difference
Convert milliseconds to days
Native JS
const startDate = '2020-01-01';
const endDate = '2020-03-15';
const diffInMs = new Date(endDate) - new Date(startDate)
const diffInDays = diffInMs / (1000 * 60 * 60 * 24);
Comm...
Has anyone used Coffeescript for a production application? [closed]
...concern. It's entirely likely, from the text I've given, that we've simply converted already working javascript into coffeescript, hence no serious debugging is yet required
– PandaWood
Jan 30 '12 at 0:58
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Resolve absolute path from relative path and/or file name
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I came across a similar need this morning: how to convert a relative path into an absolute path inside a Windows command script.
The following did the trick:
@echo off
set REL_PATH=..\..\
set ABS_PATH=
rem // Save current directory and change to target directory
pushd %R...
What are POD types in C++?
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POD stands for Plain Old Data - that is, a class (whether defined with the keyword struct or the keyword class) without constructors, destructors and virtual members functions. Wikipedia's article on POD goes into a bit more detail...
Are table names in MySQL case sensitive?
...case specified in the CREATE TABLE or CREATE DATABASE statement, but MySQL converts them to lowercase on lookup.
Name comparisons are not case sensitive.
Documentation
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How to check command line parameter in “.bat” file?
...n, short answer: they are "magical" - sometimes double (double) quotes get converted to a single (double) quote. And they need to match, for a start.
Consider this little script:
@rem argq.bat
@echo off
:loop
if "%1"=="" goto :done
echo %1
shift
goto :loop
:done
echo Done.
Let's test it:
C:\...
Remove the bottom divider of an android ListView
... far I think doing this all in code was much faster than if I had of tried converting it all into XML based layout (as I defined all the iOS UI in code in the first place). I suppose one day I'll have to get my head around all this XML stuff, but not today :)
– Herr Grumps
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Random “Element is no longer attached to the DOM” StaleElementReferenceException
...ms like a complete nightmare. The Chrome webdriver is currently unusable, and the other drivers are quite unreliable, or so it seems. I am battling many problems, but here is one.
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Getting distance between two points based on latitude/longitude
...n Python, all the trig functions use radians, not degrees.
You can either convert the numbers manually to radians, or use the radians function from the math module:
from math import sin, cos, sqrt, atan2, radians
# approximate radius of earth in km
R = 6373.0
lat1 = radians(52.2296756)
lon1 = ra...
is of a type that is invalid for use as a key column in an index
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A unique constraint can't be over 8000 bytes per row and will only use the first 900 bytes even then so the safest maximum size for your keys would be:
create table [misc_info]
(
[id] INTEGER PRIMARY KEY IDENTITY NOT NULL,
[key] nvarchar(450) UNIQUE NOT NULL,
[v...