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mysql - how many columns is too many?
...considered too many once it's above the maximum limit supported by the database.
The fact that you don't need every column to be returned by every query is perfectly normal; that's why SELECT statement lets you explicitly name the columns you need.
As a general rule, your table structure should re...
What is the difference between .*? and .* regular expressions?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to disable HTML links
...d it works cross browser). The code is below (both ES2015 and coffeescript based on your preference).
This provides for multiple levels of defense so that Anchors marked as disable actually behave as such.
Using this approach, you get an anchor that you cannot:
click
tab to and hit return
tabbing...
What are some uses of decltype(auto)?
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Maven: how to override the dependency added by a library
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Understanding the difference between __getattr__ and __getattribute__
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Setup RSpec to test a gem (not Rails)
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In what cases do I use malloc and/or new?
...ossible to accidentally introduce non-PODness much further away (e.g. in a base class, by adding a non-POD member). If you have C++11/boost you can use is_pod to check that this assumption is correct and produce an error if it's not:
#include <type_traits>
#include <stdlib.h>
foo *safe...
Best way to work with dates in Android SQLite [closed]
...per.
JDBC has different methods to get actual date/time values from a database: java.sql.Date, java.sql.Time, and java.sql.Timestamp.
The related methods in java.sql.ResultSet are (obviously) getDate(..), getTime(..), and getTimestamp() respectively.
For example:
Statement stmt = ... // Get stat...
Does JavaScript have “Short-circuit” evaluation?
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