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How to interpolate variables in strings in JavaScript, without concatenation?
...introduced in ES2015 (ES6).
Example
var a = 5;
var b = 10;
console.log(`Fifteen is ${a + b}.`);
// "Fifteen is 15.
How neat is that?
Bonus:
It also allows for multi-line strings in javascript without escaping, which is great for templates:
return `
<div class="${foo}">
...
...
Find document with array that contains a specific value
If I have this schema...
10 Answers
10
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Extracting extension from filename in Python
... @klingt.net Well, in that case, .asd is really the extension!! If you think about it, foo.tar.gz is a gzip-compressed file (.gz) which happens to be a tar file (.tar). But it is a gzip file in first place. I wouldn't expect it to return the dual extension at all.
– ...
GitHub: Permission denied (publickey). fatal: The remote end hung up unexpectedly
...
For me the problem was the execution of clone via sudo.
If you clone to a directory where you have user permission ( /home/user/git) it will work fine.
(Explanation: Running a command as superuser will not work with the same public key as running a command as user. Therefore Gith...
How do I get a value of datetime.today() in Python that is “timezone aware”?
...ut creating your own timezone class.
On Windows, there's win32timezone.utcnow(), but that's part of pywin32. I would rather suggest to use the pytz library, which has a constantly updated database of most timezones.
Working with local timezones can be very tricky (see "Further reading" links below...
How can I analyze Python code to identify problematic areas?
...I would like to produce a report about the health of the source code, identifying problem areas that need to be addressed.
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Finding element's position relative to the document
....
function getOffsetLeft( elem )
{
var offsetLeft = 0;
do {
if ( !isNaN( elem.offsetLeft ) )
{
offsetLeft += elem.offsetLeft;
}
} while( elem = elem.offsetParent );
return offsetLeft;
}
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How to wait 5 seconds with jQuery?
...
jQuery is written in javascript. If you include and use jQuery, you need javascript. If you have javascript, you have setTimeout.
– Alex Bagnolini
Dec 2 '09 at 22:08
...
Declaring array of objects
...terals in an array literal:
var sample = [{}, {}, {} /*, ... */];
EDIT: If your goal is an array whose undefined items are empty object literals by default, you can write a small utility function:
function getDefaultObjectAt(array, index)
{
return array[index] = array[index] || {};
}
Then ...
In C#, how do I calculate someone's age based on a DateTime type birthday?
...
Just wanted to comment on DateTime.Now performance. If you don't need an accurate time zone value, use DateTime.UtcNow it's much faster.
– JAG
Jan 22 '09 at 10:29
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