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What is a good reason to use SQL views?
...gregated tables, where the database engine aggregates
data (sum, average etc) and presents the calculated results as part of the data
Views can hide the complexity of data; for example a view could appear as
Sales2000 or Sales2001, transparently partitioning the actual underlying table
Views tak...
Proper way to exit iPhone application?
...tions the user could take — turning on WiFi, enabling Location Services, etc. Allow the user to terminate the application at their own discretion.
WARNING: Do not call the exit function. Applications calling exit will appear to the user to have crashed, rather than performing a graceful ...
How to get the primary IP address of the local machine on Linux and OS X? [closed]
...*).*/\2/p'
If you are only interested in certain interfaces, wlan0, eth0, etc. then:
ifconfig wlan0 | ...
You can alias the command in your .bashrc to create your own command called myip for instance.
alias myip="ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'"
...
Best way to check if a URL is valid
...ER_VALIDATE_URL will not validate the protocol of a url. So ssh://, ftp:// etc will pass.
– Seph
May 10 '14 at 14:03
3
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How would I skip optional arguments in a function call?
...bj = new MyObjectClass();
$var = $obj->a(MyObjectClass::DEFAULT_A_B); //etc.
Note that this default constant is defined exactly once throughout the code (there is no value even in method declaration), so in case of some unexpected changes, you will always supply the function/method with correct...
Entity Framework Provider type could not be loaded?
...d to include the Entity Framework Nuget package in your front-end (WebApi, etc) project and can leave everything EF-related in your data layer.
– Nick
Nov 11 '15 at 21:34
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Storing integer values as constants in Enum manner in java [duplicate]
...rotocol which you can't change, or the enums represent columns in a table, etc).
In almost all cases I suggest using an EnumMap instead. It decouples the components more completely, if that was the concern, or if the enums represent column indices or something similar, you can easily make changes ...
Android - set TextView TextStyle programmatically?
...yle.RedHUGEText);
It worked for me! And it applied color, size, gravity, etc. I've used it on handsets and tablets with Android API Levels from 8 to 17 with no problems. Note that as of Android 23, that method has been deprecated. The context argument has been dropped, so the last line would need ...
How can I check if a directory exists in a Bash shell script?
...
For modern versions of bash, ksh, etc. [...] is a builtin
– fpmurphy
Mar 24 '11 at 14:22
80
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Setting up foreign keys in phpMyAdmin?
... "Structure" tab, just below the tab row that shows "Browse", "Structure", etc.
– Astitva Srivastava
Apr 2 '18 at 18:42
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