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Laravel Eloquent Sum of relation's column
...ser()->products->sum('price');
The documentation is a little light for some of the Collection methods but all the query builder aggregates are seemingly available besides avg() that can be found at http://laravel.com/docs/queries#aggregates.
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In C++, is it still bad practice to return a vector from a function?
...ing on this document is a bad coding practice, IMO. Even if you'll lose performance.
– SigTerm
Jun 28 '10 at 19:24
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Rails: Check output of path helper from console
Rails defines a bunch of magic with named routes that make helpers for your routes. Sometimes, especially with nested routes, it can get a little confusing to keep track of what URL you'll get for a given route helper method call. Is it possible to, using the Ruby console, see what link a given help...
What's a correct and good way to implement __hash__()?
...should probably implement the type in C.
Here's an example of using a key for hash and equality:
class A:
def __key(self):
return (self.attr_a, self.attr_b, self.attr_c)
def __hash__(self):
return hash(self.__key())
def __eq__(self, other):
if isinstance(other...
Asserting successive calls to a mock method
...has been
called with the specified calls. The mock_calls list is checked for
the calls.
If any_order is False (the default) then the calls must be sequential.
There can be extra calls before or after the specified calls.
If any_order is True then the calls can be in any order, but th...
Dynamic SQL - EXEC(@SQL) versus EXEC SP_EXECUTESQL(@SQL)
...re. This excellent article descibes this process.
The oft cited reference for many aspects of dynamic sql is Erland Sommarskog's must read: "The Curse and Blessings of Dynamic SQL".
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Response.Redirect with POST instead of Get?
We have the requirement to take a form submission and save some data, then redirect the user to a page offsite, but in redirecting, we need to "submit" a form with POST, not GET.
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click() event is calling twice in jquery
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This was the problem for my case. That my click event was getting bubbeled. Thanks for the pointer. :) +1
– Tahir Akram
Sep 14 '11 at 8:25
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How do I compare two files using Eclipse? Is there any option provided by Eclipse?
... edited Nov 20 '15 at 13:33
informatik01
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answered Jan 7 '11 at 8:08
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How do I combine two data frames?
...a new DataFrame though. Is there a way to do it inline? That would be nice for when I'm loading huge amounts of data from a database in batches so I could iteratively update the DataFrame without creating a copy each time.
– Andrew
Nov 5 '13 at 17:36
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