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Best practices for SQL varchar column length [closed]
..., it does not make any difference whether you declare a column as VARCHAR(100) or VARCHAR(500).
You should see the max length provided for a VARCHAR column as a kind of constraint (or business rule) rather than a technical/physical thing.
For PostgreSQL the best setup is to use text without a len...
What should be in my .gitignore for an Android Studio project?
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Updated to Android Studio 3.0
Please share missing items in comments.
A late answer but none of the answers here and here was right on the money for us...
So, here's our gitignore file:
#built application files
*.apk
*.ap_
# files for the dex VM
*.d...
How do I expire a PHP session after 30 minutes?
I need to keep a session alive for 30 minutes and then destroy it.
15 Answers
15
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Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
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109
Try this:
if (Build.VERSION.SDK_INT <19){
Intent intent = new Intent();
intent.s...
vs vs for inline and block code snippets
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Josh LeeJosh Lee
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class
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answered Mar 24 '10 at 3:05
Chris Jester-YoungChris Jester-Young
200k4444 gold badges362362 silver badges409409 bronze badges
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rails - Devise - Handling - devise_error_messages
...sue logged on Github https://github.com/plataformatec/devise/issues/issue/504/#comment_574788
Jose is saying that devise_error_messsages! method is just a stub (though it contains implementation) and that we're supposed to override/replace it. It would have been nice if this was pointed out somewhe...
How to handle initializing and rendering subviews in Backbone.js?
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260
This is a great question. Backbone is great because of the lack of assumptions it makes, but it ...
mmap() vs. reading blocks
...king on a program that will be processing files that could potentially be 100GB or more in size. The files contain sets of variable length records. I've got a first implementation up and running and am now looking towards improving performance, particularly at doing I/O more efficiently since the in...
Cookies vs. sessions
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answered Jun 6 '11 at 14:40
FoscoFosco
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