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How to determine a user's IP address in node
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In your request object there is a property called connection, which is a net.Socket object. The net.Socket object has a property remoteAddress, therefore you should be able to get the IP with this call:
request.connection.remoteAddress
See documentation for http and...
How to force R to use a specified factor level as reference in a regression?
...ommand which is the best solution if you want to change the base level for all analyses on your data (or are willing to live with changing the data).
If you don't want to change the data (this is a one time change, but in the future you want the default behavior again), then you can use a combinati...
What does the X-SourceFiles header do?
...in a WebForms project in VS2017 that doesn't use WebMatrixSupportModule at all (no WebMatrix-related DLLs are loaded by my IIS Express process).
– Dai
Oct 3 '19 at 7:42
add a ...
Hide Spinner in Input Number - Firefox 29
...o hide the spinner by default, you can set -moz-appearance: textfield initially, and if you want the spinner to appear on :hover/:focus, you can overwrite the previous styling with -moz-appearance: number-input.
input[type="number"] {
-moz-appearance: textfield;
}
input[type="number"]:ho...
Binary Data in JSON String. Something better than Base64
...builtin functions, but the space efficiency is bad -- a 105% expansion (if all input bytes are equally likely) vs. 25% for base85 or 33% for base64.
Final verdict: base64 wins, in my opinion, on the grounds that it's common, easy, and not bad enough to warrant replacement.
See also: Base91 and Bas...
How do I convert a String to an int in Java?
...ht want to consider using Long::parseLong instead.
– Allison
Jan 17 '18 at 9:37
6
@Allison especi...
What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
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These are usually to make sure that the browser gets a new version when the site gets updated with a new version, e.g. as part of our build process we'd have something like this:
/Resources/Combined.css?v=x.x.x.buildnumber
Since this c...
what is the difference between GROUP BY and ORDER BY in sql
... returned.
GROUP BY will aggregate records by the specified columns which allows you to perform aggregation functions on non-grouped columns (such as SUM, COUNT, AVG, etc).
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How do I iterate through each element in an n-dimensional matrix in MATLAB?
...ar index for arrays in matlab is an important one. An array in MATLAB is really just a vector of elements, strung out in memory. MATLAB allows you to use either a row and column index, or a single linear index. For example,
A = magic(3)
A =
8 1 6
3 5 7
4 9 2
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How can I nullify css property?
Basically I have two external css in my page.
7 Answers
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