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What does a double * (splat) operator do
...lues)
options = values.extract_options!
# ...
end
This method can be called like this: cycle("red", "green", "blue", name: "colors").
This is quite a common pattern: You accept a list of arguments and the last one is an options hash, which can be extract - for example - using ActiveSupport's ...
How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...y('total')
Transaction.objects.all().values('actor').annotate(total=Count('id')).order_by('total')
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Coalesce function for PHP?
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Putting func_get_args() inside the foreach (here as $arg) won't change anything from a performance point of view.
– Savageman
Dec 12 '09 at 1:47
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Why do I need 'b' to encode a string with Base64?
...dely-used encodings). That is what is happening when you take a string and call the .encode() method on it: Python is interpreting the string in utf-8 (the default encoding) and providing you the array of bytes that it corresponds to.
Base-64 Encoding in Python 3
Originally the question title aske...
Could not load file or assembly Microsoft.SqlServer.management.sdk.sfc version 11.0.0.0
...
Solution: just go to http://www.microsoft.com/en-us/download/details.aspx?id=42295 and download:
ENU\x64\SharedManagementObjects.msi for X64 OS or
ENU\x86\SharedManagementObjects.msi for X86 OS,
then install it, and restart visual studio.
PS: You may need install DB2OLEDBV5_x64.msi or DB2OL...
How do I get the name of a Ruby class?
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You want to call .name on the object's class:
result.class.name
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HttpServletRequest - how to obtain the referring URL?
...inking to you? You want to capture the HTTP Referrer, which you can do by calling:
request.getHeader("referer");
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Align DIV's to bottom or baseline
... flex-end; flex-direction: column on the parent div (demonstrated in this fiddle as well):
#parentDiv
{
display: flex;
justify-content: flex-end;
flex-direction: column;
width:300px;
height:300px;
background-color:#ccc;
background-repeat:repeat
}
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How to access array elements in a Django template?
...ictionary lookup
foo.bar # attribute lookup
foo.bar() # method call
foo[bar] # list-index lookup
It tries them in this order until it finds a match. So foo.3 will get you your list index because your object isn't a dict with 3 as a key, doesn't have an attribute named 3, and doe...
What is the best way to exit a function (which has no return value) in python before the function en
Let's assume an iteration in which we call a function without a return value. The way I think my program should behave is explained in this pseudocode:
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