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Rails: confused about syntax for passing locals to partials
...short answer is the render method looks at the first argument you pass in. If you pass in a hash (which includes :partial => 'foo', :locals => {blah blah blah}) then it will pass in all of your arguments as a hash and parse them accordingly.
If you pass in a string as your first argument, i...
How do I automatically sort a has_many relationship in Rails?
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You can specify the sort order for the bare collection with an option on has_many itself:
class Article < ActiveRecord::Base
has_many :comments, :order => 'created_at DESC'
end
class Comment < ActiveRecord::Base
belongs_...
Can't connect to local MySQL server through socket '/tmp/mysql.sock
...cal/mysql/support-files/mysql.server start
This worked for me. However, if this doesnt work then make sure that mysqld is running and try connecting.
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Best way to parseDouble with comma as decimal separator?
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This only works if the current default locale happens to use a comma as a decimal separator.
– Joonas Pulakka
Dec 1 '10 at 11:05
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Creating a zero-filled pandas data frame
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Note that you may run into int/float issue if you will be doing something like d.set_value(params) after initializing d to contain 0's. An easy fix is: d = pd.DataFrame(0.0, index=np.arange(len(data)), columns=feature_list).
– ximiki
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Where to use EJB 3.1 and CDI?
...bject and the result is passed back through the proxy to the caller.
The difference only comes in how the object to be invoked is resolved. By "resolved" we simply mean, where and how the container looks for the real instance to invoke.
In CDI the container looks in a "scope", which will basicall...
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
If I have a table
15 Answers
15
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Qt: How do I handle the event of the user pressing the 'X' (close) button?
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If you have a QMainWindow you can override closeEvent method.
#include <QCloseEvent>
void MainWindow::closeEvent (QCloseEvent *event)
{
QMessageBox::StandardButton resBtn = QMessageBox::question( this, APP_NAME,
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How to switch to the new browser window, which opens after click on the button?
...Handle);
}
// Perform the actions on new window
// Close the new window, if that window no more required
driver.close();
// Switch back to original browser (first window)
driver.switchTo().window(winHandleBefore);
// Continue with original browser (first window)
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MySQL query String contains
...ve been trying to figure out how I can make a query with MySQL that checks if the value (string $haystack ) in a certain column contains certain data (string $needle ), like this:
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