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PHP validation/regex for URL
I've been looking for a simple regex for URLs, does anybody have one handy that works well? I didn't find one with the zend framework validation classes and have seen several implementations.
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Convert datetime to Unix timestamp and convert it back in python
...s, which explain about timezones and "naive" and "aware" objects.
If your original naive datetime was UTC, the way to recover it is to use utcfromtimestamp instead of fromtimestamp.
On the other hand, if your original naive datetime was local, you shouldn't have subtracted a UTC timestamp from it ...
Is “inline” without “static” or “extern” ever useful in C99?
...e should contain the (externally visible) generated code.
[update, to elaborate]
I do not think there is any use for "inline" (without "static" or "extern") in a .c file. But in a header file it makes sense, and it requires a corresponding "extern inline" declaration in some .c file to actually g...
So, JSONP or CORS? [closed]
...f you need a read-only ajax interface to your servers and you need to support IE<=9, Opera<12, or Firefox<3.5 or various other older or obscure browsers, CORS is out, use JSONP. IE8 and IE9 sorta support CORS but have problems, see the link in the first comment below.
On the other hand, i...
Insert into a MySQL table or update if exists
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+1 From what I've found, this method is less problematic for auto-increment keys and other unique key collisions than REPLACE INTO, and it is more efficient.
– Andrew Ensley
May 11 '12 at 21:27
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When should I choose Vector in Scala?
It seems that Vector was late to the Scala collections party, and all the influential blog posts had already left.
6 Answ...
Seeding the random number generator in Javascript
Is it possible to seed the random number generator (Math.random) in Javascript?
13 Answers
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Disable IPython Exit Confirmation
...et, run ipython profile create to create one.
Note this ticket if you're working within the Django shell.
* The config file is located at: $HOME/.ipython/profile_default/ipython_config.py
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Extract file basename without path and extension in bash [duplicate]
...cho "${s%.txt}"
foo
$ echo "${s%.*}"
foo
Note that this solution should work in all recent (post 2004) POSIX compliant shells, (e.g. bash, dash, ksh, etc.).
Source: Shell Command Language 2.6.2 Parameter Expansion
More on bash String Manipulations: http://tldp.org/LDP/LG/issue18/bash.html
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Cartesian product of multiple arrays in JavaScript
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2020 Update: 1-line (!) answer with vanilla JS
Original 2017 Answer: 2-line answer with vanilla JS:
(see updates below)
All of the answers here are overly complicated, most of them take 20 lines of code or even more.
This example uses just two lines of vanilla JavaScript,...