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How to return an empty ActiveRecord relation?
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A more portable solution that doesn't require an "id" column and doesn't assume there won't be a row with an id of 0:
scope :none, where("1 = 0")
I'm still looking for a more "correct" way.
share
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Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)
...8000) = '';
SELECT @kill = @kill + 'kill ' + CONVERT(varchar(5), session_id) + ';'
FROM sys.dm_exec_sessions
WHERE database_id = db_id('MyDB')
EXEC(@kill);
For MS SQL Server 2000, 2005, 2008
USE master;
DECLARE @kill varchar(8000); SET @kill = '';
SELECT @kill = @kill + 'kill ' + CONVERT...
Test if a property is available on a dynamic variable
...p();
Console.WriteLine("Testing with exception: " + sw.ElapsedTicks.ToString() + " ticks");
sw.Restart();
for (int i = 0; i < 100000; i++)
{
TestWithReflection(test, FlipCoin(random));
}
sw.Stop();
Console.WriteLine("Testing with reflection: " + sw.Elapsed...
How to avoid the “Circular view path” exception with Spring MVC test
...ks the following
if (path.startsWith("/") ? uri.equals(path) : uri.equals(StringUtils.applyRelativePath(uri, path))) {
throw new ServletException("Circular view path [" + path + "]: would dispatch back " +
"to the current handler URL [" + uri + "] again. Check your ViewR...
How to find a hash key containing a matching value
...te a multi-line script) to obtain the key given I want to match the client_id? E.g. How to get the key for client_id == "2180" ?
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How do I put hint in a asp:textbox
How do I put a hint/placeholder inside a asp:TextBox? When I say a hint I mean some text which disappears when the user clicks on it. Is there a way to achieve the same using html / css?
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How to delete object from array inside foreach loop?
...h an array of objects and want to delete one of the objects based on it's 'id' property, but my code doesn't work.
6 Answer...
Adding an arbitrary line to a matplotlib plot in ipython notebook
... )
In the documentation it says you can draw only an arrow with an empty string as the first argument.
From the OP's example:
%matplotlib notebook
import numpy as np
import matplotlib.pyplot as plt
np.random.seed(5)
x = np.arange(1, 101)
y = 20 + 3 * x + np.random.normal(0, 60, 100)
plt.plot(x,...
bower init - difference between amd, es6, globals and node
...fined in the main JavaScript file. Can be one or an array of the following strings:
globals: JavaScript module that adds to global namespace, using window.namespace or this.namespace syntax
amd: JavaScript module compatible with AMD, like RequireJS, using define() syntax
node: JavaScript module com...
Setting background colour of Android layout element
I am trying to, somewhat clone the design of an activity from a set of slides on Android UI design . However I am having a problem with a very simple task.
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