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Where does PostgreSQL store the database?
...ectory is, use this query.
show data_directory;
To see all the run-time parameters, use
show all;
You can create tablespaces to store database objects in other parts of the filesystem. To see tablespaces, which might not be in that data directory, use this query.
SELECT * FROM pg_tablespace;
...
find vs find_by vs where
...
Model.find
1- Parameter: ID of the object to find.
2- If found: It returns the object (One object only).
3- If not found: raises an ActiveRecord::RecordNotFound exception.
Model.find_by
1- Parameter: key/value
Example:
User.find_by ...
What does send() do in Ruby?
...gn attributes to your car class from user input, you can do
c = Car.new()
params.each do |key, value|
c.send("#{key}=", value)
end
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Why use String.Format? [duplicate]
...know what goes where, I have to go back and forth between the text and the params, and that's not even counting the possibility of miscounting and getting it wrong (that may not be an issue with fewer parameters, but go over 10 and it stops being fun). As Ashley pointed out, the second point is null...
How can I benchmark JavaScript code? [closed]
...mes.
/**
* Figure out how long it takes for a method to execute.
*
* @param {Function} method to test
* @param {number} iterations number of executions.
* @param {Array} args to pass in.
* @param {T} context the context to call the method in.
* @return {number} the time it took, in millis...
Embedding unmanaged dll into a managed C# dll
...resources to temporary folder
/// </summary>
/// <param name="dllName">name of DLL file to create (including dll suffix)</param>
/// <param name="resourceBytes">The resource name (fully qualified)</param>
public static void ExtractEmbedde...
Android: I am unable to have ViewPager WRAP_CONTENT
...htViewPager extends ViewPager {
/**
* Constructor
*
* @param context the context
*/
public WrapContentHeightViewPager(Context context) {
super(context);
}
/**
* Constructor
*
* @param context the context
* @param attrs the attribute s...
Converting a generic list to a CSV string
...
No need to specify generic type parameters in call to ConvertAll here - both int and string will be inferred.
– Pavel Minaev
Dec 11 '09 at 19:01
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Bash script to receive and repass quoted parameters
I'm trying to get quoted parameters of a bash script to safely be received by a nested script. Any ideas?
2 Answers
...
Converting camel case to underscore case in ruby
... If you change tr("-","_") to tr("- ","_") (space added to first param), this will also turn spaces into underscores. Also, I don't think you even need to include self., or at least it works for me under Ruby 1.9.3.
– Gus Shortz
Jul 17 '13 at 15:39
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