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When to use the brace-enclosed initializer?
...eUploader: {
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 46.2665 7.94324 4...
Checking for empty arrays: count vs empty
...it's only personal preference. Some people might say empty is faster (e.g. http://jamessocol.com/projects/count_vs_empty.php) while others might say count is better since it was originally made for arrays. empty is more general and can be applied to other types.
php.net gives the following warning ...
Using multiple delimiters in awk
... the text between []:
Use awk -F'[][]' but awk -F'[[]]' will not work.
http://stanlo45.blogspot.com/2020/06/awk-multiple-field-separators.html
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How to do a PUT request with curl?
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Using the -X flag with whatever HTTP verb you want:
curl -X PUT -d arg=val -d arg2=val2 localhost:8080
This example also uses the -d flag to provide arguments with your PUT request.
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Forward an invocation of a variadic function in C
...a va_list instead of a variable number of arguments, you can't do it. See http://c-faq.com/varargs/handoff.html.
Example:
void myfun(const char *fmt, va_list argp) {
vfprintf(stderr, fmt, argp);
}
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How do I make an HTTP request in Swift?
...g Language Swift by Apple in iBooks, but cannot figure out how to make an HTTP request (something like cURL) in Swift. Do I need to import Obj-C classes or do I just need to import default libraries? Or is it not possible to make an HTTP request based on native Swift code?
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How to create a drop shadow only on one side of an element?
...rength/opacity of the shadow. Here's a new fiddle, using pseudo-elements:
http://jsfiddle.net/UnsungHero97/ARRRZ/2/
HTML
<div id="box" class="box-shadow"></div>
CSS
#box {
background-color: #3D6AA2;
width: 160px;
height: 90px;
margin-top: -45px;
margin-left: -80...
How do I make a column unique and index it in a Ruby on Rails migration?
.... :column_name_n], unique: true, name: 'my_custom_index_name'
More info - http://apidock.com/rails/ActiveRecord/ConnectionAdapters/SchemaStatements/add_index
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SQL Server: Examples of PIVOTing String data
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From http://blog.sqlauthority.com/2008/06/07/sql-server-pivot-and-unpivot-table-examples/:
SELECT CUST, PRODUCT, QTY
FROM Product) up
PIVOT
( SUM(QTY) FOR PRODUCT IN (VEG, SODA, MILK, BEER, CHIPS)) AS pvt) p
UNPIVOT
(QTY FOR PROD...
Free space in a CMD shell
... can alter the output by various command-line options.
You can get it from http://www.paulsadowski.com/WSH/cmdprogs.htm, http://unxutils.sourceforge.net/ or somewhere else. It's a standard unix-util like du.
df -h will show all your drive's used and available disk space. For example:
M:\>df -h
F...