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Rails - controller action name to string
...ustomising the Rails log format so that the action/method name is included by the format rather than it being in your log message.
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Difference between left join and right join in SQL Server [duplicate]
...ed completely interchangeable. Try however Table2 left join Table1 (or its identical pair, Table1 right join Table2) to see a difference. This query should give you more rows, since Table2 contains a row with an id which is not present in Table1.
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Difference between initLoader and restartLoader in LoaderManager
...s much more enlightening.
initLoader
Call to initialize a particular ID with a Loader. If this ID already
has a Loader associated with it, it is left unchanged and any previous
callbacks replaced with the newly provided ones. If there is not
currently a Loader for the ID, a new one is ...
How do you attach and detach from Docker's process?
...the tty without exiting the shell, use the escape sequence Ctrl+P followed by Ctrl+Q. More details here.
Additional info from this source:
docker run -t -i → can be detached with ^P^Qand reattached with docker attach
docker run -i → cannot be detached with ^P^Q; will disrupt stdin
docker run ...
How to change the href for a hyperlink using jQuery
...f all <a> elements that actually have an href attribute, select them by adding the [href] attribute selector (a[href]): (example)
var anchors = document.querySelectorAll('a[href]');
Array.prototype.forEach.call(anchors, function (element, index) {
element.href = "http://stackoverflow.com"...
Send email with PHPMailer - embed image in body
... imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
How to make a JSONP request from Javascript without JQuery?
...ript.src = '//example.com/path/to/jsonp?callback=foo'
document.getElementsByTagName('head')[0].appendChild(script);
// or document.head.appendChild(script) in modern browsers
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Limit file format when using ?
...pe using both the file extension and its binary signature (ASP.NET, PHP, Ruby, Java). You might also want to refer to these tables for file types and their magic numbers, to perform a more robust server-side verification.
Here are three good reads on file-uploads and security.
EDIT: Maybe file type...
Convert pandas dataframe to NumPy array
...ay(['a', 'b', 'c'], dtype=object)
df['A'].to_numpy()
# array([1, 2, 3])
By default, a view is returned, so any modifications made will affect the original.
v = df.to_numpy()
v[0, 0] = -1
df
A B
a -1 4
b 2 5
c 3 6
If you need a copy instead, use to_numpy(copy=True).
pandas >= 1.0 u...
jQuery checkbox checked state changed event
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Actually I've got it looking for the checkbox by the class. Is there a better way to just get all checkboxes regardless of class?
– AnonyMouse
Dec 7 '11 at 22:07
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