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Adding div element to body or document in JavaScript
... += '<div style="position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000;"></div>';
instead of
document.body.innerHTML = '<div style="position:absolute;width:100%;height:100%;opacity:0.3;z-index:100;background:#000;"></div>';
Edit:-
Ideally you ...
examining history of deleted file
...
When you want to look at old files you really should know the difference between:
svn cat http://server/svn/project/file -r 1234
and
svn cat http://server/svn/project/file@1234
The first version looks at the path that is now available as http://server/svn/proj...
How to initialize an array's length in JavaScript?
..., [0, 0] ]
N-dimensional array
function NArray(...dimensions) {
var index = 0;
function NArrayRec(dims) {
var first = dims[0], next = dims.slice().splice(1);
if(dims.length > 1)
return Array(dims[0]).fill(null).map((x, i) => NArrayRec(next ));
r...
ActiveRecord.find(array_of_ids), preserving order
...
Oddly, no one has suggested something like this:
index = Something.find(array_of_ids).group_by(&:id)
array_of_ids.map { |i| index[i].first }
As efficient as it gets besides letting SQL backend do it.
Edit: To improve on my own answer, you can also do it like this:
S...
Why use 'git rm' to remove a file instead of 'rm'?
...tep.
You can also use git rm --cached which will remove the file from the index (staging it for deletion on the next commit), but keep your copy in the local file system.
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is of a type that is invalid for use as a key column in an index
...es, not 4) and the overhead bytes are not included in the limit on maximum index row size. technet.microsoft.com/en-us/library/ms176089(v=sql.100).aspx
– Daniel Renshaw
May 15 '14 at 11:50
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Bubble Sort Homework
... Technically, element is not an element; it's a number representing a list index. Also, it's quite long. In these cases, just use a temporary variable name, like i for "index".
for i in range(0, length):
The range command can also take just one argument (named stop). In that case, you get a list o...
add created_at and updated_at fields to mongoose schemas
...ut do you remember by any chance if fields created this way can be used as index?
– manidos
Aug 25 '17 at 18:31
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How do you make sure email you send programmatically is not automatically marked as spam?
...these accounts exist, read what's sent to them, and act on complaints.
Finally, make it really easy to unsubscribe. Otherwise, your users will unsubscribe by pressing the spam button, and that will affect your reputation.
That said, getting Hotmail to accept your emails remains a black art.
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JavaScript “new Array(n)” and “Array.prototype.map” weirdness
... and constructs a new array from the results. callback is invoked only for indexes of the array which have assigned values; it is not invoked for indexes which have been deleted or which have never been assigned values." In this case, x's values have not explicitly assigned values, whereas y's were...