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Multi-line regex support in Vim
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Yes, Perl's //s modifier isn't available on Vim regexes. See :h perl-patterns for details and a list of other differences between Vim and Perl regexes.
Instead you can use \_., which means "match any single character including newline". It's...
Converting any string into camel case
...return str.replace(/(?:^\w|[A-Z]|\b\w|\s+)/g, function(match, index) {
if (+match === 0) return ""; // or if (/\s+/.test(match)) for white spaces
return index === 0 ? match.toLowerCase() : match.toUpperCase();
});
}
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Is there a built in function for string natural sort?
....isdigit() else text.lower()
for text in _nsre.split(s)]
Now this function can be used as a key in any function that uses it, like list.sort, sorted, max, etc.
As a lambda:
lambda s: [int(t) if t.isdigit() else t.lower() for t in re.split('(\d+)', s)]
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Rails check if yield :area is defined in content_for
...nt_for_whatever is deprecated.
Use content_for? instead, like this:
<% if content_for?(:whatever) %>
<div><%= yield(:whatever) %></div>
<% end %>
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instantiate a class from a variable in PHP?
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If you work with namespace, put the current namespace into the string: $var = __NAMESPACE__ . '\\' . $var . 'Class';
– bastey
Sep 2 '13 at 13:28
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Converting a string to a date in JavaScript
...e advantage of the library Moment.js that allows parsing date with the specified time zone.
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How do I format a string using a dictionary in python-3.x?
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Since the question is specific to Python 3, here's using the new f-string syntax, available since Python 3.6:
>>> geopoint = {'latitude':41.123,'longitude':71.091}
>>> print(f'{geopoint["latitude"]} {geopoint["longitude"]}')
41.123 ...
What do the terms “CPU bound” and “I/O bound” mean?
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It's pretty intuitive:
A program is CPU bound if it would go faster if the CPU were faster, i.e. it spends the majority of its time simply using the CPU (doing calculations). A program that computes new digits of π will typically be CPU-bound, it's just crunching number...
setTimeout / clearTimeout problems
...ion call.
You need to persist it, you can put it outside the function, or if you don't want to expose the variable as global, you can store it in a closure, e.g.:
var endAndStartTimer = (function () {
var timer; // variable persisted here
return function () {
window.clearTimeout(timer);
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Can iterators be reset in Python?
... one crucial warning in the docs for it:
This itertool may require significant
auxiliary storage (depending on how
much temporary data needs to be
stored). In general, if one iterator
uses most or all of the data before
another iterator starts, it is faster
to use list() instead of t...