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How to use the PI constant in C++
...t take this approach, we people make mistakes, rounding, copy&pasting, etc. I think using M_PI is the right approach.
– nacho4d
Jan 21 '14 at 1:47
11
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Styling HTML email for Gmail
...ing templates like those mentioned above from mailchimp, campaign monitor, etc. as they, as you have found, will not work in some email programs. This tool leaves your style section for the mail programs that will read it and puts all the styles inline to get more universal readability in the forma...
Get first n characters of a string
How can I get the first n characters of a string in PHP? What's the fastest way to trim a string to a specific number of characters, and append '...' if needed?
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NodeJS: Saving a base64-encoded image to disk
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UPDATE
I found this interesting link how to solve your problem in PHP. I think you forgot to replace space by +as shown in the link.
I took this circle from http://images-mediawiki-sites.thefullwiki.org/04/1/7/5/6204600836255205.png as sample which looks like:
Next I put it through htt...
Create table with jQuery - append
...lt;/table>), and $('<tr/>') instead of $('<tr></tr>), etc.
– phyatt
Feb 28 '18 at 14:08
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How to call an external command?
...can get the stdout, stderr, the "real" status code, better error handling, etc...).
The official documentation recommends the subprocess module over the alternative os.system():
The subprocess module provides more powerful facilities for spawning new processes and retrieving their results; usin...
What is the best regular expression to check if a string is a valid URL?
...EFFFD}!\$&'\(\)\*\+,;=:@])|[\/\?])*)?)$/i
How they were compiled (in PHP):
<?php
/* Regex convenience functions (character class, non-capturing group) */
function cc($str, $suffix = '', $negate = false) {
return '[' . ($negate ? '^' : '') . $str . ']' . $suffix;
}
function ncg($str, $...
Regex lookahead, lookbehind and atomic groups
...port look-behind assertions. And most flavors that support it (PHP, Python etc) require that look-behind portion to have a fixed length.
Atomic groups basically discards/forgets the subsequent tokens in the group once a token matches. Check this page for examples of atomic groups
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Sort an Array by keys based on another Array?
Is it possible in PHP to do something like this? How would you go about writing a function? Here is an example. The order is the most important thing.
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How to check if an object is a list or tuple (but not string)?
...) and not isinstance(obj, str):
print("obj is a sequence (list, tuple, etc) but not a string")
Changed in version 3.3: Moved Collections Abstract Base Classes to the collections.abc module. For backwards compatibility, they will continue to be visible in this module as well until version 3....