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Javascript: negative lookbehind equivalent?
...€8.47".match(/(?<!\$)\d+(?:\.\d*)/) // Matches "8.47"
);
Platform support:
✔️ V8
✔️ Google Chrome 62.0
✔️ Microsoft Edge 79.0
✔️ Node.js 6.0 behind a flag and 9.0 without a flag
✔️ Deno (all versions)
✔️ SpiderMonkey
✔️ Mozilla Firefox 78.0
????️ Ja...
Can a CSV file have a comment?
Is there any official way to allow a CSV formatted file to allow comments, either on its own line OR at the end of a line?
...
Rails: around_* callbacks
I have read the documentation at http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html , but don't understand when the around_* callbacks are triggered in relation to before_* and after_* .
...
What command opens Ruby's REPL?
...
There are several REPLs for Ruby.
The standard library ships with a REPL called IRb (for Interactive Ruby), which installs a program named irb, but since it is just a Ruby library, it can also be invoked from Ruby code and not just from the shell. O...
Javascript equivalent of Python's zip function
... so the following function definition will act like python, but see below for disclaimer... this will not be its own inverse so zip(zip(x)) will not equal x; though as Matt Kramer points out zip(...zip(...x))==x (like in regular python zip(*zip(*x))==x))
Alternative definition equiv. to Python{zip}...
Adding iOS UITableView HeaderView (not section header)
...want to add a table header (not section headers) like in the contacts app for example:
5 Answers
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How can I resize an image dynamically with CSS as the browser width/height changes?
...e resize along with the browser window, here is what I have done so far (or download the whole site in a ZIP ).
9 Answer...
Reset PHP Array Index
...
If you want to reset the key count of the array for some reason;
$array1 = [
[3] => 'Hello',
[7] => 'Moo',
[45] => 'America'
];
$array1 = array_merge($array1);
print_r($array1);
Output:
Array(
[0] => 'Hello',
[1] => 'Moo',
[2] => 'America...
What is the difference between CurrentCulture and CurrentUICulture properties of CultureInfo in .NET
... default user locale of the system. This controls default number and date formatting and the like.
CurrentUICulture refers to the default user interface language, a setting introduced in Windows 2000. This is primarily regarding the UI localization/translation part of your app.
Whatever regional o...
Shell command to tar directory excluding certain files/folders
Is there a simple shell command/script that supports excluding certain files/folders from being archived?
27 Answers
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