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How to use concerns in Rails 4
...surely mention that there are better ways to do things (i.e. Redis.current vs $redis) could be useful info for topic starter? Software development is inherently an opinionated discipline, there is no getting around it. In fact, I see opinions as answers and discussions which answer is the best all t...
Populate data table from data reader
I'm doing a basic thing in C# (MS VS2008) and have a question more about proper design than specific code.
5 Answers
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Start / Stop a Windows Service from a non-Administrator user account
...s Right, please read more http://msdn.microsoft.com/en-us/library/aa379607(VS.85).aspx)
object_guid - n/a,
inherit_object_guid - n/a,
account_sid - "SY": Local system. The corresponding RID is SECURITY_LOCAL_SYSTEM_RID.
Now what we need to do is to set the appropriate permissions to Start/Stop Win...
Does use of final keyword in Java improve the performance?
...ble object can be in exactly one state, the state in which it was created. vs Mutable objects, on the other hand, can have arbitrarily complex state spaces.. From my personal experience, using the keyword final should highlight the intent of the developer to lean toward immutability, not to "optimiz...
$on and $broadcast in angular
...ns but the one we're going to use is using $broadcast and $on.
$broadcast vs $emit
Which should we use? $broadcast will channel down to all the children dom elements and $emit will channel the opposite direction to all the ancestor dom elements.
The best way to avoid deciding between $emit or ...
Is there a way to instantiate objects from a string holding their class name?
... Originally posted by somedave in another question, this code fails on VS2010 with ambiguous template errors because of make_pair. To fix, change make_pair to std::pair<std::string,Base*()()> and it should fix those errors. I also got some linking errors which were fixed by adding BaseFact...
How to create module-wide variables in Python? [duplicate]
...use 'global' in initialize_db. Can you comment on the pros/cons of global vs. your answer, since they both seem to work the same?
– Alain Collins
Dec 12 '16 at 17:57
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How to check if a table exists in a given schema
...ble_name'
);
Related answer on dba.SE discussing "Information schema vs. system catalogs"
Alternative: cast to regclass
SELECT 'schema_name.table_name'::regclass
This raises an exception if the (optionally schema-qualified) table (or other object occupying that name) does not exist.
If y...
Using the field of an object as a generic Dictionary key
...des, as it often leads to a lot of diagonal collisions (i.e. {"foo","bar"} vs {"bar","foo"}. A better choice is to multiply and add each term - i.e. 17 * a.GetHashCode() + B.GetHashCode();
– Marc Gravell♦
Mar 11 '09 at 15:02
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No == operator found while comparing structs in C++
...r, list), and if so whether it's ok to sort them in-place before comparing vs. using extra memory to sort temporaries each time a comparison is done
how many array elements currently hold valid values that should be compared (is there a size somewhere or a sentinel?)
which member of a union to compa...