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Finding duplicate values in a SQL table
...aggregated columns in the GROUP BY.
MySQL is unpredictable and you need sql_mode=only_full_group_by:
GROUP BY lname ORDER BY showing wrong results;
Which is the least expensive aggregate function in the absence of ANY() (see comments in accepted answer).
Oracle isn't mainstream enough (warning: h...
How can I set the request header for curl?
...;q=0.8,en;q=0.6' \
-e localhost \
-A 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.65 Safari/537.36' \
'http://restapi.some-site.com/getsomething?argument=value&argument2=value'
In this example the referer (-e or --referer in curl) is '...
Rails hidden field undefined method 'merge' error
...
You should do:
<%= f.hidden_field :service, :value => "test" %>
hidden_field expects a hash as a second argument
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Check if a string contains a number
...
You can use a combination of any and str.isdigit:
def num_there(s):
return any(i.isdigit() for i in s)
The function will return True if a digit exists in the string, otherwise False.
Demo:
>>> king = 'I shall have 3 cakes'
>>> num_there(king)
True
>>...
CSS selector with period in ID
...e it does use dots in its ids. For example: "OpenLayers.Control.Attribution_7". I guess it helps with the internal code where they can have the javascript variable name be the same value as the id itself.
– Hoffmann
Jan 28 '14 at 17:44
...
Testing service in Angular returns module is not defined
...ple testacular.conf.js */
basePath = '../';
files = [
JASMINE,
JASMINE_ADAPTER,
'path/to/angular.js',
'path/to/angular-mocks.js', // for angular.mock.module and inject.
'src/js/**/*.js', // application sources
'test/unit/**/*.spec.js' // specs
];
autoWatch = true;
bro...
Installing pip packages to $HOME folder
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This looks very insteresting. easy_install comes installed in Mac OS X by default, so I would have only pip installed outside the $HOME folder.
– Somebody still uses you MS-DOS
Aug 22 '11 at 14:08
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How do I exit a WPF application programmatically?
...is where from one window pop up another window and, in that window's window_closed event I added this code. all the windows disappear, but the program still runs beyond where after the pop up is created.
– diyoda_
Jan 5 '13 at 17:37
...
rails 3 validation on uniqueness on multiple attributes
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In Rails 2, I would have written:
validates_uniqueness_of :zipcode, :scope => :recorded_at
In Rails 3:
validates :zipcode, :uniqueness => {:scope => :recorded_at}
For multiple attributes:
validates :zipcode, :uniqueness => {:scope => [:recorded_at...
Get TransactionScope to work with async / await
...on.Enabled))
{
// connection
using (var connection = new SqlConnection(_connectionString))
{
// open connection asynchronously
await connection.OpenAsync();
using (var command = connection.CreateCommand())
{
command.CommandText = ...;
// run command asynchronously...