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Entity Attribute Value Database vs. strict Relational Model Ecommerce
...ponents
Con: complex code required to validate simple data types
Con: much more complex SQL for simple
reports
Con: complex reports can become almost
impossible
Con: poor performance for large data sets
Option 2, Modelling each entity separately:
Con: more time required to gather
requirements an...
pass string parameter in an onclick function
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Split Strings into words with multiple word boundary delimiters
...egular expression '\w+' means "a word character (a-z etc.) repeated one or more times". There's a HOWTO on Python regular expressions here: amk.ca/python/howto/regex
– RichieHindle
Jul 4 '09 at 19:44
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Checking for empty queryset in Django
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For a more detailed answer look at @leonid-shvechikov 's answer below: using .exists() is more efficient if the qs is not going to be evaluated.
– guival
May 25 '18 at 10:06
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PostgreSQL “DESCRIBE TABLE”
... this (in the psql command-line tool):
\d+ tablename
See the manual for more info.
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“for” vs “each” in Ruby
...small difference considering variable scoping).
Using each is considered more idiomatic use of Ruby.
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How should I choose an authentication library for CodeIgniter? [closed]
..., Redux, SimpleLogin, SimpleLoginSecure, pc_user, Fresh Powered, and a few more. None of them were up to par, IMO, either they were lacking basic features, inherently INsecure, or too bloated for my taste.
Actually, I did a detailed roundup of all the authentication libraries for CodeIgniter when I ...
How can I generate random alphanumeric strings?
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The following line is more memory (and thus time) efficient than the given one return new string(Enumerable.Range(1, length).Select(_ => chars[random.Next(chars.Length)]).ToArray());
– Tyson Williams
Nov 1...
jQuery validation: change default error message
...valid extension.",
maxlength: jQuery.validator.format("Please enter no more than {0} characters."),
minlength: jQuery.validator.format("Please enter at least {0} characters."),
rangelength: jQuery.validator.format("Please enter a value between {0} and {1} characters long."),
range: j...
SQLite UPSERT / UPDATE OR INSERT
...ll the other features, improvements and bug fixes that usually come with a more recent release.
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